FFmpeg About News Download
Documentation
Community
Code of Conduct
Mailing Lists
IRC
Forums
Bug Reports
Wiki
Developers
Source Code
Contribute
FATE
Code Coverage
Funding through SPI
More
Donate
Hire Developers
Contact
Security
Legal
A complete, cross-platform solution to record, convert and stream audio and video.
Converting
video
and
audio
has never been so easy.
$ ffmpeg -i input.mp4 output.avi
Discover more
 
April 5th, 2024, FFmpeg 7.0 "Dijkstra"
A new major release,
FFmpeg 7.0 "Dijkstra"
is now available for download. The most noteworthy changes for most users are
native VVC decoder
(currently experimental, until more
fuzzing is done),
IAMF support
, or a
multi-threaded
ffmpeg
CLI tool
This release is
not
backwards compatible, removing APIs deprecated before 6.0.
The biggest change for most library callers will be the removal of the old bitmask-based
channel layout API, replaced by the
AVChannelLayout
API allowing such
features as custom channel ordering, or Ambisonics. Certain deprecated
CLI options were also removed, and a C11-compliant compiler is now required to build
the code.
As usual, there is also a number of new supported formats and codecs, new filters, APIs,
and countless smaller features and bugfixes. Compared to 6.1, the
git
repository
contains almost ∼2000 new commits by ∼100 authors, touching >100000 lines in
∼2000 files — thanks to everyone who contributed. See the
Changelog
APIchanges
and the git log for more comprehensive lists of changes.
January 3rd, 2024, native VVC decoder
The
libavcodec
library now contains a native VVC (Versatile Video Coding)
decoder, supporting a large subset of the codec's features. Further optimizations and
support for more features are coming soon. The code was written by Nuo Mi, Xu Mu,
Frank Plowman, Shaun Loo, and Wu Jianhua.
December 18th, 2023, IAMF support
libavformat
library can now read and write
IAMF
(Immersive Audio) files. The
CLI tool can configure IAMF structure with the new
-stream_group
option. IAMF support was written by James Almer.
December 12th, 2023, multi-threaded
Thanks to a major refactoring of the
command-line tool, all the major
components of the transcoding pipeline (demuxers, decoders, filters, encodes, muxers) now
run in parallel. This should improve throughput and CPU utilization, decrease latency,
and open the way to other exciting new features.
Note that you should
expect significant performance improvements in cases
where almost all computational time is spent in a single component (typically video
encoding).
November 10th, 2023, FFmpeg 6.1 "Heaviside"
FFmpeg 6.1 "Heaviside"
, a new
major release, is now available! Some of the highlights:
libaribcaption decoder
Playdate video decoder and demuxer
Extend VAAPI support for libva-win32 on Windows
afireqsrc audio source filter
arls filter
ffmpeg CLI new option: -readrate_initial_burst
zoneplate video source filter
command support in the setpts and asetpts filters
Vulkan decode hwaccel, supporting H264, HEVC and AV1
color_vulkan filter
bwdif_vulkan filter
nlmeans_vulkan filter
RivaTuner video decoder
xfade_vulkan filter
vMix video decoder
Essential Video Coding parser, muxer and demuxer
Essential Video Coding frame merge bsf
bwdif_cuda filter
Microsoft RLE video encoder
Raw AC-4 muxer and demuxer
Raw VVC bitstream parser, muxer and demuxer
Bitstream filter for editing metadata in VVC streams
Bitstream filter for converting VVC from MP4 to Annex B
scale_vt filter for videotoolbox
transpose_vt filter for videotoolbox
support for the P_SKIP hinting to speed up libx264 encoding
Support HEVC,VP9,AV1 codec in enhanced flv format
apsnr and asisdr audio filters
OSQ demuxer and decoder
Support HEVC,VP9,AV1 codec fourcclist in enhanced rtmp protocol
CRI USM demuxer
ffmpeg CLI '-top' option deprecated in favor of the setfield filter
VAAPI AV1 encoder
ffprobe XML output schema changed to account for multiple variable-fields elements within the same parent element
ffprobe -output_format option added as an alias of -of
This release had been overdue for at least half a year, but due to constant activity in the repository,
had to be delayed, and we were finally able to branch off the release recently, before some of the large
changes scheduled for 7.0 were merged.
Internally, we have had a number of changes too. The FFT, MDCT, DCT and DST implementation used for codecs
and filters has been fully replaced with the faster libavutil/tx (full article about it coming soon).
This also led to a reduction in the the size of the compiled binary, which can be noticeable in small builds.
There was a very large reduction in the total amount of allocations being done on each frame throughout video decoders,
reducing overhead.
RISC-V optimizations for many parts of our DSP code have been merged, with mainly the large decoders being left.
There was an effort to improve the correctness of timestamps and frame durations of each packet, increasing the
accurracy of variable frame rate video.
Next major release will be version 7.0, scheduled to be released in February. We will attempt to better stick
to the new release schedule we announced at the start of this year.
We strongly recommend users, distributors, and system integrators to upgrade unless they use current git master.
May 31st, 2023, Vulkan decoding
A few days ago, Vulkan-powered decoding hardware acceleration code was merged into the codebase.
This is the first vendor-generic and platform-generic decode acceleration API, enabling the
same code to be used on multiple platforms, with very minimal overhead.
This is also the first multi-threaded hardware decoding API, and our code makes full use of this,
saturating all available decode engines the hardware exposes.
Those wishing to test the code can read our
documentation page
For those who would like to integrate FFmpeg's Vulkan code to demux, parse, decode, and receive
a VkImage to present or manipulate, documentation and examples are available in our source tree.
Currently, using the latest available git checkout of our
is required.
The functionality will be included in stable branches with the release of version 6.1, due
to be released soon.
As this is also the first practical implementation of the specifications, bugs may be present,
particularly in drivers, and, although passing verification, the implementation itself.
New codecs, and encoding support are also being worked on, by both the Khronos organization
for standardizing, and us as implementing it, and giving feedback on improving.
February 28th, 2023, FFmpeg 6.0 "Von Neumann"
FFmpeg 6.0 "Von Neumann"
is now available for download. This release has many new encoders and decoders, filters,
ffmpeg CLI tool improvements, and also, changes the way releases are done. All major
releases will now bump the version of the ABI. We plan to have a new major release each
year. Another release-specific change is that deprecated APIs will be removed after 3
releases, upon the next major bump.
This means that releases will be done more often and will be more organized.
New decoders featured are Bonk, RKA, Radiance, SC-4, APAC, VQC, WavArc and a few ADPCM formats.
QSV and NVenc now support AV1 encoding. The FFmpeg CLI (we usually reffer to it as ffmpeg.c
to avoid confusion) has speed-up improvements due to threading, as well as statistics options,
and the ability to pass option values for filters from a file. There are quite a few new audio
and video filters, such as adrc, showcwt, backgroundkey and ssim360, with a few hardware ones too.
Finally, the release features many behind-the-scenes changes, including a new FFT and MDCT
implementation used in codecs (expect a blog post about this soon), numerous bugfixes, better
ICC profile handling and colorspace signalling improvement, introduction of a number of RISC-V
vector and scalar assembly optimized routines, and a few new improved APIs, which can be viewed
in the doc/APIchanges file in our tree.
A few submitted features, such as the Vulkan improvements and more FFT optimizations will be in the
next minor release, 6.1, which we plan to release soon, in line with our new release schedule.
Some highlights are:
Radiance HDR image support
ddagrab (Desktop Duplication) video capture filter
ffmpeg -shortest_buf_duration option
ffmpeg now requires threading to be built
ffmpeg now runs every muxer in a separate thread
Add new mode to cropdetect filter to detect crop-area based on motion vectors and edges
VAAPI decoding and encoding for 10/12bit 422, 10/12bit 444 HEVC and VP9
WBMP (Wireless Application Protocol Bitmap) image format
a3dscope filter
bonk decoder and demuxer
Micronas SC-4 audio decoder
LAF demuxer
APAC decoder and demuxer
Media 100i decoders
DTS to PTS reorder bsf
ViewQuest VQC decoder
backgroundkey filter
nvenc AV1 encoding support
MediaCodec decoder via NDKMediaCodec
MediaCodec encoder
oneVPL support for QSV
QSV AV1 encoder
QSV decoding and encoding for 10/12bit 422, 10/12bit 444 HEVC and VP9
showcwt multimedia filter
corr video filter
adrc audio filter
afdelaysrc audio filter
WADY DPCM decoder and demuxer
CBD2 DPCM decoder
ssim360 video filter
ffmpeg CLI new options: -stats_enc_pre[_fmt], -stats_enc_post[_fmt], -stats_mux_pre[_fmt]
hstack_vaapi, vstack_vaapi and xstack_vaapi filters
XMD ADPCM decoder and demuxer
media100 to mjpegb bsf
ffmpeg CLI new option: -fix_sub_duration_heartbeat
WavArc decoder and demuxer
CrystalHD decoders deprecated
SDNS demuxer
RKA decoder and demuxer
filtergraph syntax in ffmpeg CLI now supports passing file contents as option values
hstack_qsv, vstack_qsv and xstack_qsv filters
We strongly recommend users, distributors, and system integrators to
upgrade unless they use current git master.
July 22nd, 2022, FFmpeg 5.1 "Riemann"
FFmpeg 5.1 "Riemann"
add ipfs/ipns protocol support
dialogue enhance audio filter
dropped obsolete XvMC hwaccel
pcm-bluray encoder
DFPWM audio encoder/decoder and raw muxer/demuxer
SITI filter
Vizrt Binary Image encoder/decoder
avsynctest source filter
feedback video filter
pixelize video filter
colormap video filter
colorchart video source filter
multiply video filter
PGS subtitle frame merge bitstream filter
blurdetect filter
tiltshelf audio filter
QOI image format support
ffprobe -o option
virtualbass audio filter
VDPAU AV1 hwaccel
PHM image format support
remap_opencl filter
added chromakey_cuda filter
January 17th, 2022, FFmpeg 5.0 "Lorentz"
FFmpeg 5.0 "Lorentz"
major release, is now available! For this long-overdue release, a major effort
underwent to remove the old encode/decode APIs and replace them with an
N:M-based API, the entire libavresample library was removed, libswscale
has a new, easier to use AVframe-based API, the Vulkan code was much improved,
many new filters were added, including libplacebo integration, and finally,
DoVi support was added, including tonemapping and remuxing. The default
AAC encoder settings were also changed to improve quality.
Some of the changelog highlights:
ADPCM IMA Westwood encoder
Westwood AUD muxer
ADPCM IMA Acorn Replay decoder
Argonaut Games CVG demuxer
Argonaut Games CVG muxer
Concatf protocol
afwtdn audio filter
audio and video segment filters
Apple Graphics (SMC) encoder
hsvkey and hsvhold video filters
adecorrelate audio filter
atilt audio filter
grayworld video filter
AV1 Low overhead bitstream format muxer
swscale slice threading
MSN Siren decoder
scharr video filter
apsyclip audio filter
morpho video filter
amr parser
(a)latency filters
GEM Raster image decoder
asdr audio filter
speex decoder
limitdiff video filter
xcorrelate video filter
varblur video filter
huesaturation video filter
colorspectrum source video filter
RTP packetizer for uncompressed video (RFC 4175)
bitpacked encoder
VideoToolbox VP9 hwaccel
VideoToolbox ProRes hwaccel
support loongarch.
aspectralstats audio filter
adynamicsmooth audio filter
libplacebo filter
vflip_vulkan, hflip_vulkan and flip_vulkan filters
adynamicequalizer audio filter
yadif_videotoolbox filter
VideoToolbox ProRes encoder
anlmf audio filter
June 19th, 2021, IRC
We have a new IRC home at Libera Chat
now! Feel free to join us at #ffmpeg and #ffmpeg-devel. More info at
contact#IRCChannels
April 8th, 2021, FFmpeg 4.4 "Rao"
FFmpeg 4.4 "Rao"
AudioToolbox output device
MacCaption demuxer
PGX decoder
chromanr video filter
VDPAU accelerated HEVC 10/12bit decoding
ADPCM IMA Ubisoft APM encoder
Rayman 2 APM muxer
AV1 encoding support SVT-AV1
Cineform HD encoder
ADPCM Argonaut Games encoder
Argonaut Games ASF muxer
AV1 Low overhead bitstream format demuxer
RPZA video encoder
ADPCM IMA MOFLEX decoder
MobiClip FastAudio decoder
MobiClip video decoder
MOFLEX demuxer
MODS demuxer
PhotoCD decoder
MCA demuxer
AV1 decoder (Hardware acceleration used only)
SVS demuxer
Argonaut Games BRP demuxer
DAT demuxer
aax demuxer
IPU decoder, parser and demuxer
Intel QSV-accelerated AV1 decoding
Argonaut Games Video decoder
libwavpack encoder removed
ACE demuxer
AVS3 demuxer
AVS3 video decoder via libuavs3d
Cintel RAW decoder
VDPAU accelerated VP9 10/12bit decoding
afreqshift and aphaseshift filters
High Voltage Software ADPCM encoder
LEGO Racers ALP (.tun & .pcm) muxer
AV1 VAAPI decoder
adenorm filter
ADPCM IMA AMV encoder
AMV muxer
NVDEC AV1 hwaccel
DXVA2/D3D11VA hardware accelerated AV1 decoding
speechnorm filter
SpeedHQ encoder
asupercut filter
asubcut filter
Microsoft Paint (MSP) version 2 decoder
Microsoft Paint (MSP) demuxer
AV1 monochrome encoding support via libaom >= 2.0.1
asuperpass and asuperstop filter
shufflepixels filter
tmidequalizer filter
estdif filter
epx filter
Dolby E parser
shear filter
kirsch filter
colortemperature filter
colorcontrast filter
PFM encoder
colorcorrect filter
binka demuxer
XBM parser
xbm_pipe demuxer
colorize filter
CRI parser
aexciter audio filter
exposure video filter
monochrome video filter
setts bitstream filter
vif video filter
OpenEXR image encoder
Simbiosis IMX decoder
Simbiosis IMX demuxer
Digital Pictures SGA demuxer and decoders
TTML subtitle encoder and muxer
identity video filter
msad video filter
gophers protocol
RIST protocol via librist
June 15th, 2020, FFmpeg 4.3 "4:3"
FFmpeg 4.3 "4:3"
v360 filter
Intel QSV-accelerated MJPEG decoding
Intel QSV-accelerated VP9 decoding
Support for TrueHD in mp4
Support AMD AMF encoder on Linux (via Vulkan)
IMM5 video decoder
ZeroMQ protocol
support Sipro ACELP.KELVIN decoding
streamhash muxer
sierpinski video source
scroll video filter
photosensitivity filter
anlms filter
arnndn filter
bilateral filter
maskedmin and maskedmax filters
VDPAU VP9 hwaccel
median filter
QSV-accelerated VP9 encoding
AV1 encoding support via librav1e
AV1 frame merge bitstream filter
AV1 Annex B demuxer
axcorrelate filter
mvdv decoder
mvha decoder
MPEG-H 3D Audio support in mp4
thistogram filter
freezeframes filter
Argonaut Games ADPCM decoder
Argonaut Games ASF demuxer
xfade video filter
xfade_opencl filter
afirsrc audio filter source
pad_opencl filter
Simon & Schuster Interactive ADPCM decoder
Real War KVAG demuxer
CDToons video decoder
siren audio decoder
Rayman 2 ADPCM decoder
Rayman 2 APM demuxer
cas video filter
High Voltage Software ADPCM decoder
LEGO Racers ALP (.tun & .pcm) demuxer
AMQP 0-9-1 protocol (RabbitMQ)
Vulkan support
avgblur_vulkan, overlay_vulkan, scale_vulkan and chromaber_vulkan filters
ADPCM IMA MTF decoder
FWSE demuxer
DERF DPCM decoder
DERF demuxer
CRI HCA decoder
CRI HCA demuxer
overlay_cuda filter
switch from AvxSynth to AviSynth+ on Linux
mv30 decoder
Expanded styling support for 3GPP Timed Text Subtitles (movtext)
WebP parser
tmedian filter
maskedthreshold filter
Support for muxing pcm and pgs in m2ts
Cunning Developments ADPCM decoder
asubboost filter
Pro Pinball Series Soundbank demuxer
pcm_rechunk bitstream filter
scdet filter
NotchLC decoder
gradients source video filter
MediaFoundation encoder wrapper
untile filter
Simon & Schuster Interactive ADPCM encoder
PFM decoder
dblur video filter
Real War KVAG muxer
October 5th, 2019, Bright Lights
FFmpeg has added a realtime bright flash removal filter to libavfilter.
Note that this filter is not FDA approved, nor are we medical professionals.
Nor has this filter been tested with anyone who has photosensitive epilepsy.
FFmpeg and its photosensitivity filter are not making any medical claims.
That said, this is a new video filter that may help photosensitive people
watch tv, play video games or even be used with a VR headset to block
out epiletic triggers such as filtered sunlight when they are outside.
Or you could use it against those annoying white flashes on your tv screen.
The filter fails on some input, such as the
Incredibles 2 Screen Slaver
scene. It is not perfect. If you have other clips that you want this filter to
work better on, please report them to us on our
trac
See for yourself
Example was made with -vf photosensitivity=20:0.8
We are not professionals. Please use this in your medical studies to
advance epilepsy research. If you decide to use this in a medical
setting, or make a hardware hdmi input output realtime tv filter,
or find another use for this,
please let me know
This filter was a feature request of mine
since 2013
August 5th, 2019, FFmpeg 4.2 "Ada"
FFmpeg 4.2 "Ada"
tpad filter
AV1 decoding support through libdav1d
dedot filter
chromashift and rgbashift filters
freezedetect filter
truehd_core bitstream filter
dhav demuxer
PCM-DVD encoder
GIF parser
vividas demuxer
hymt decoder
anlmdn filter
maskfun filter
hcom demuxer and decoder
ARBC decoder
libaribb24 based ARIB STD-B24 caption support (profiles A and C)
Support decoding of HEVC 4:4:4 content in nvdec and cuviddec
removed libndi-newtek
agm decoder
KUX demuxer
AV1 frame split bitstream filter
lscr decoder
lagfun filter
asoftclip filter
Support decoding of HEVC 4:4:4 content in vdpau
colorhold filter
xmedian filter
asr filter
showspatial multimedia filter
VP4 video decoder
IFV demuxer
derain filter
deesser filter
mov muxer writes tracks with unspecified language instead of English by default
added support for using clang to compile CUDA kernels
November 6th, 2018, FFmpeg 4.1 "al-Khwarizmi"
FFmpeg 4.1 "al-Khwarizmi"
deblock filter
tmix filter
amplify filter
fftdnoiz filter
aderivative and aintegral audio filters
pal75bars and pal100bars video filter sources
mbedTLS based TLS support
adeclick and adeclip filters
libtensorflow backend for DNN based filters like srcnn
VC1 decoder is now bit-exact
ATRAC9 decoder
lensfun wrapper filter
colorconstancy filter
AVS2 video decoder via libdavs2
IMM4 video decoder
Brooktree ProSumer video decoder
MatchWare Screen Capture Codec decoder
WinCam Motion Video decoder
1D LUT filter (lut1d)
RemotelyAnywhere Screen Capture decoder
cue and acue filters
Support for AV1 in MP4 and Matroska/WebM
transpose_npp filter
AVS2 video encoder via libxavs2
amultiply filter
Block-Matching 3d (bm3d) denoising filter
acrossover filter
ilbc decoder
audio denoiser as afftdn filter
AV1 parser
sinc audio filter source
chromahold filter
setparams filter
vibrance filter
S12M timecode decoding in h264
xstack filter
(a)graphmonitor filter
yadif_cuda filter
April 20th, 2018, FFmpeg 4.0 "Wu"
FFmpeg 4.0 "Wu"
Bitstream filters for editing metadata in H.264, HEVC and MPEG-2 streams
Experimental MagicYUV encoder
TiVo ty/ty+ demuxer
Intel QSV-accelerated MJPEG encoding
native aptX and aptX HD encoder and decoder
NVIDIA NVDEC-accelerated H.264, HEVC, MJPEG, MPEG-1/2/4, VC1, VP8/9 hwaccel decoding
Intel QSV-accelerated overlay filter
mcompand audio filter
acontrast audio filter
OpenCL overlay filter
video mix filter
video normalize filter
audio lv2 wrapper filter
VAAPI MJPEG and VP8 decoding
AMD AMF H.264 and HEVC encoders
video fillborders filter
video setrange filter
support LibreSSL (via libtls)
Dropped support for building for Windows XP. The minimum supported Windows version is Windows Vista.
deconvolve video filter
entropy video filter
hilbert audio filter source
aiir audio filter
Removed the ffserver program
Removed the ffmenc and ffmdec muxer and demuxer
VideoToolbox HEVC encoder and hwaccel
VAAPI-accelerated ProcAmp (color balance), denoise and sharpness filters
Add android_camera indev
codec2 en/decoding via libcodec2
native SBC encoder and decoder
drmeter audio filter
hapqa_extract bitstream filter
filter_units bitstream filter
AV1 Support through libaom
E-AC-3 dependent frames support
bitstream filter for extracting E-AC-3 core
Haivision SRT protocol via libsrt
vfrdet filter
October 15th, 2017, FFmpeg 3.4 "Cantor"
FFmpeg 3.4 "Cantor"
deflicker video filter
doubleweave video filter
lumakey video filter
pixscope video filter
oscilloscope video filter
update cuvid/nvenc headers to Video Codec SDK 8.0.14
afir audio filter
scale_cuda CUDA based video scale filter
librsvg support for svg rasterization
crossfeed audio filter
spec compliant VP9 muxing support in MP4
surround audio filter
sofalizer filter switched to libmysofa
Gremlin Digital Video demuxer and decoder
headphone audio filter
superequalizer audio filter
roberts video filter
additional frame format support for Interplay MVE movies
support for decoding through D3D11VA in ffmpeg
limiter video filter
libvmaf video filter
Dolby E decoder and SMPTE 337M demuxer
unpremultiply video filter
tlut2 video filter
floodfill video filter
pseudocolor video filter
raw G.726 muxer and demuxer, left- and right-justified
NewTek NDI input/output device
FITS demuxer and decoder
FITS muxer and encoder
despill video filter
haas audio filter
SUP/PGS subtitle muxer
convolve video filter
VP9 tile threading support
KMS screen grabber
CUDA thumbnail filter
V4L2 mem2mem HW assisted codecs
Rockchip MPP hardware decoding
vmafmotion video filter
April 13th, 2017, FFmpeg 3.3 "Hilbert"
FFmpeg 3.3 "Hilbert"
Apple Pixlet decoder
NewTek SpeedHQ decoder
QDMC audio decoder
PSD (Photoshop Document) decoder
FM Screen Capture decoder
ScreenPressor decoder
XPM decoder
DNxHR decoder fixes for HQX and high resolution videos
ClearVideo decoder (partial)
16.8 and 24.0 floating point PCM decoder
Intel QSV-accelerated VP8 video decoding
native Opus encoder
DNxHR 444 and HQX encoding
Quality improvements for the (M)JPEG encoder
VAAPI-accelerated MPEG-2 and VP8 encoding
premultiply video filter
abitscope multimedia filter
readeia608 filter
threshold filter
midequalizer filter
MPEG-7 Video Signature filter
add internal ebur128 library, remove external libebur128 dependency
Intel QSV video scaling and deinterlacing filters
Sample Dump eXchange demuxer
MIDI Sample Dump Standard demuxer
Scenarist Closed Captions demuxer and muxer
Support MOV with multiple sample description tables
Pro-MPEG CoP #3-R2 FEC protocol
Support for spherical videos
CrystalHD decoder moved to new decode API
configure now fails if autodetect-libraries are requested but not found
October 30th, 2016, Results: Summer Of Code 2016.
This has been a long time coming but we wanted to give a proper closure to our participation in this run of the program and it takes time. Sometimes it's just to get the final report for each project trimmed down, others, is finalizing whatever was still in progress when the program finished: final patches need to be merged, TODO lists stabilized, future plans agreed; you name it.
Without further ado, here's the silver-lining for each one of the projects we sought to complete during this Summer of Code season:
FFv1 (Mentor: Michael Niedermayer)
Stanislav Dolganov designed and implemented experimental support for motion estimation and compensation in the lossless FFV1 codec. The design and implementation is based on the snow video codec, which uses OBMC. Stanislav's work proved that significant compression gains can be achieved with inter frame compression. FFmpeg welcomes Stanislav to continue working beyond this proof of concept and bring its advances into the official FFV1 specification within the IETF.
Self test coverage (Mentor: Michael Niedermayer)
Petru Rares Sincraian added several self-tests to FFmpeg and successfully went through the in-some-cases tedious process of fine tuning tests parameters to avoid known and hard to avoid problems, like checksum mismatches due to rounding errors on the myriad of platforms we support. His work has improved the code coverage of our self tests considerably.
MPEG-4 ALS encoder implementation (Mentor: Thilo Borgmann)
Umair Khan updated and integrated the ALS encoder to fit in the current FFmpeg codebase. He also implemented a missing feature for the ALS decoder that enables floating-point sample decoding. FFmpeg support for MPEG-4 ALS has been improved significantly by Umair's work. We welcome him to keep maintaining his improvements and hope for great contributions to come.
Tee muxer improvements (Mentor: Marton Balint)
Ján Sebechlebský's generic goal was to improve the tee muxer so it tolerated blocking IO and allowed transparent error recovery. During the design phase it turned out that this functionality called for a separate muxer, so Ján spent his summer working on the so-called FIFO muxer, gradually fixing issues all over the codebase. He succeeded in his task, and the FIFO muxer is now part of the main repository, alongside several other improvements he made in the process.
TrueHD encoder (Mentor: Rostislav Pehlivanov)
Jai Luthra's objective was to update the out-of-tree and pretty much abandoned MLP (Meridian Lossless Packing) encoder for libavcodec and improve it to enable encoding to the TrueHD format. For the qualification period the encoder was updated such that it was usable and throughout the summer, successfully improved adding support for multi-channel audio and TrueHD encoding. Jai's code has been merged into the main repository now. While a few problems remain with respect to LFE channel and 32 bit sample handling, these are in the process of being fixed such that effort can be finally put in improving the encoder's speed and efficiency.
Motion interpolation filter (Mentor: Paul B Mahol)
Davinder Singh investigated existing motion estimation and interpolation approaches from the available literature and previous work by our own: Michael Niedermayer, and implemented filters based on this research. These filters allow motion interpolating frame rate conversion to be applied to a video, for example, to create a slow motion effect or change the frame rate while smoothly interpolating the video along the motion vectors. There's still work to be done to call these filters 'finished', which is rather hard all things considered, but we are looking optimistically at their future.
And that's it. We are happy with the results of the program and immensely thankful for the opportunity of working with such an amazing set of students. We can be a tough crowd but our mentors did an amazing job at hand holding our interns through their journey. Thanks also to Google for this wonderful program and to everyone that made room in their busy lives to help making GSoC2016 a success. See you in 2017!
September 24th, 2016, SDL1 support dropped.
Support for the SDL1 library has been dropped, due to it no longer being maintained (as of
January, 2012) and it being superseded by the SDL2 library. As a result, the SDL1 output device
has also been removed and replaced by an SDL2 implementation. Both the ffplay and opengl output
devices have been updated to support SDL2.
August 9th, 2016, FFmpeg 3.1.2 "Laplace"
FFmpeg 3.1.2
, a new point release from the 3.1 release branch, is now available!
It fixes several bugs.
We recommend users, distributors, and system integrators, to upgrade unless they use current git master.
July 10th, 2016, ffserver program being dropped
After thorough deliberation, we're announcing that we're about to drop the ffserver program from the project starting with the next release.
ffserver has been a problematic program to maintain due to its use of internal APIs, which complicated the recent cleanups to the libavformat
library, and block further cleanups and improvements which are desired by API users and will be easier to maintain. Furthermore the program has
been hard for users to deploy and run due to reliability issues, lack of knowledgable people to help and confusing configuration file syntax.
Current users and members of the community are invited to write a replacement program to fill the same niche that ffserver did using the new APIs
and to contact us so we may point users to test and contribute to its development.
July 1st, 2016, FFmpeg 3.1.1 "Laplace"
FFmpeg 3.1.1
It mainly deals with a few ABI issues introduced in the previous release.
We strongly recommend users, distributors, and system integrators, especially those who experienced issues upgrading from 3.0, to
June 27th, 2016, FFmpeg 3.1 "Laplace"
FFmpeg 3.1 "Laplace"
DXVA2-accelerated HEVC Main10 decoding
fieldhint filter
loop video filter and aloop audio filter
Bob Weaver deinterlacing filter
firequalizer filter
datascope filter
bench and abench filters
ciescope filter
protocol blacklisting API
MediaCodec H264 decoding
VC-2 HQ RTP payload format (draft v1) depacketizer and packetizer
VP9 RTP payload format (draft v2) packetizer
AudioToolbox audio decoders
AudioToolbox audio encoders
coreimage filter (GPU based image filtering on OSX)
libdcadec removed
bitstream filter for extracting DTS core
ADPCM IMA DAT4 decoder
musx demuxer
aix demuxer
remap filter
hash and framehash muxers
colorspace filter
hdcd filter
readvitc filter
VAAPI-accelerated format conversion and scaling
libnpp/CUDA-accelerated format conversion and scaling
Duck TrueMotion 2.0 Real Time decoder
Wideband Single-bit Data (WSD) demuxer
VAAPI-accelerated H.264/HEVC/MJPEG encoding
DTS Express (LBR) decoder
Generic OpenMAX IL encoder with support for Raspberry Pi
IFF ANIM demuxer & decoder
Direct Stream Transfer (DST) decoder
loudnorm filter
MTAF demuxer and decoder
MagicYUV decoder
OpenExr improvements (tile data and B44/B44A support)
BitJazz SheerVideo decoder
CUDA CUVID H264/HEVC decoder
10-bit depth support in native utvideo decoder
libutvideo wrapper removed
YUY2 Lossless Codec decoder
VideoToolbox H.264 encoder
March 16th, 2016, Google Summer of Code
FFmpeg has been accepted as a
Google Summer of Code
open source organization. If you wish to
participate as a student see our
project ideas page
You can already get in contact with mentors and start working on qualification tasks as well as register at google and submit your project proposal draft.
Good luck!
February 15th, 2016, FFmpeg 3.0 "Einstein"
FFmpeg 3.0 "Einstein"
The native FFmpeg AAC encoder has seen extensive improvements and is no longer considered experimental
Removed support for libvo-aacenc and libaacplus
Over 30 new filters have been added
Many ASM optimizations
VP9 Hardware Acceleration (DXVA2 and VA-API)
Cineform HD decoder
New DCA decoder based on libdcadec with full support for DTS-HD extensions
As with all major releases expect major backward incompatible API/ABI changes
See the
for a list of more updates
January 30, 2016, Removing support for two external AAC encoders
We have just removed support for VisualOn AAC encoder (libvo-aacenc) and
libaacplus in FFmpeg master.
Even before marking our internal AAC encoder as
stable
, it was known that libvo-aacenc
was of an inferior quality compared to our native one for most samples.
However, the VisualOn encoder was used extensively by the Android Open
Source Project, and we would like to have a tested-and-true stable option
in our code base.
When first committed in 2011, libaacplus filled in the gap of encoding
High Efficiency AAC formats (HE-AAC and HE-AACv2), which was not supported
by any of the encoders in FFmpeg at that time.
The circumstances for both have changed. After the work spearheaded by
Rostislav Pehlivanov and Claudio Freire, the now-stable FFmpeg native AAC
encoder is ready to compete with much more mature encoders. The Fraunhofer
FDK AAC Codec Library for Android was added in 2012 as the fourth
supported external AAC encoder, and the one with the best quality and the
most features supported, including HE-AAC and HE-AACv2.
Therefore, we have decided that it is time to remove libvo-aacenc and
libaacplus. If you are currently using libvo-aacenc, prepare to transition
to the native encoder (
aac
) when updating to the next version
of FFmpeg. In most cases it is as simple as merely swapping the encoder
name. If you are currently using libaacplus, start using FDK AAC
libfdk_aac
) with an appropriate
profile
option
to select the exact AAC profile that fits your needs. In both cases, you
will enjoy an audible quality improvement and as well as fewer licensing
headaches.
Enjoy!
January 16, 2016, FFmpeg 2.8.5, 2.7.5, 2.6.7, 2.5.10
We have made several new point releases (
2.8.5
2.7.5
2.6.7
2.5.10
).
They fix various bugs, as well as CVE-2016-1897 and CVE-2016-1898.
Please see the changelog for each release for more details.
We recommend users, distributors and system integrators to upgrade unless they use
current git master.
December 5th, 2015, The native FFmpeg AAC encoder is now stable!
After seven years the native FFmpeg AAC encoder has had its experimental flag
removed and declared as ready for general use. The encoder is transparent
at 128kbps for most samples tested with artifacts only appearing in extreme
cases. Subjective quality tests put the encoder to be of equal or greater
quality than most of the other encoders available to the public.
Licensing has always been an issue with encoding AAC audio as most of the
encoders have had a license making FFmpeg unredistributable if compiled with
support for them. The fact that there now exists a fully open and truly
free AAC encoder integrated directly within the project means a lot to those
who wish to use accepted and widespread standards.
The majority of the work done to bring the encoder up to quality was started
during this year's GSoC by developer Claudio Freire and Rostislav Pehlivanov.
Both continued to work on the encoder with the latter joining as a developer
and mainainer, working on other parts of the project as well. Also, thanks
to
Kamedo2
who does comparisons
and tests, the original authors and all past and current contributors to the
encoder. Users are suggested and encouraged to use the encoder and provide
feedback or breakage reports through our
bug tracker
October 13th, 2015, Telepoint & MediaHub are now supporting our project
A big thank you note goes to our newest supporters: MediaHub and Telepoint.
Both companies have donated a dedicated server with free of charge internet
connectivity. Here is a little bit about them in their own words:
Telepoint
is the biggest
carrier-neutral data center in Bulgaria. Located in the heart of Sofia
on a cross-road of many Bulgarian and International networks, the
facility is a fully featured Tier 3 data center that provides flexible
customer-oriented colocation solutions (ranging from a server to a
private collocation hall) and a high level of security.
MediaHub Ltd. is a Bulgarian IPTV platform and services provider which
uses FFmpeg heavily since it started operating a year ago.
"Donating
to help keep FFmpeg online is our way of giving back to the community"
Thanks Telepoint and MediaHub for their support!
September 29th, 2015, GSoC 2015 results
FFmpeg participated to the latest edition of
the
Google
Summer of Code
Project. FFmpeg got a total of 8 assigned
projects, and 7 of them were successful.
We want to thank
, the
participating students, and especially the mentors who joined this
effort. We're looking forward to participating in the next GSoC
edition!
Below you can find a brief description of the final outcome of
each single project.
Basic servers for network protocols, mentee: Stephan Holljes, mentor: Nicolas George
Stephan Holljes's project for this session of Google Summer of Code was to
implement basic HTTP server features for libavformat, to complement the
already present HTTP client and RTMP and RTSP server code.
The first part of the project was to make the HTTP code capable of accepting
a single client; it was completed partly during the qualification period and
partly during the first week of the summer. Thanks to this work, it is now
possible to make a simple HTTP stream using the following commands:
ffmpeg -i /dev/video0 -listen 1 -f matroska \
-c:v libx264 -preset fast -tune zerolatency http://:8080
ffplay http://localhost:8080/
The next part of the project was to extend the code to be able to accept
several clients, simultaneously or consecutively. Since libavformat did not
have an API for that kind of task, it was necessary to design one. This part
was mostly completed before the midterm and applied shortly afterwards.
Since the ffmpeg command-line tool is not ready to serve several clients,
the test ground for that new API is an example program serving hard-coded
content.
The last and most ambitious part of the project was to update ffserver to
make use of the new API. It would prove that the API is usable to implement
real HTTP servers, and expose the points where more control was needed. By
the end of the summer, a first working patch series was undergoing code
review.
Browsing content on the server, mentee: Mariusz Szczepańczyk, mentor: Lukasz Marek
Mariusz finished an API prepared by the FFmpeg community and implemented
Samba directory listing as qualification task.
During the program he extended the API with the possibility to
remove and rename files on remote servers. He completed the
implementation of these features for file, Samba, SFTP, and FTP
protocols.
At the end of the program, Mariusz provided a sketch of an
implementation for HTTP directory listening.
Directshow digital video capture, mentee: Mate Sebok, mentor: Roger Pack
Mate was working on directshow input from digital video sources. He
got working input from ATSC input sources, with specifiable tuner.
The code has not been committed, but a patch of it was sent to the
ffmpeg-devel mailing list for future use.
The mentor plans on cleaning it up and committing it, at least for the
ATSC side of things. Mate and the mentor are still working trying to
finally figure out how to get DVB working.
Implementing full support for 3GPP Timed Text Subtitles, mentee: Niklesh Lalwani, mentor: Philip Langdale
Niklesh's project was to expand our support for 3GPP Timed Text
subtitles. This is the native subtitle format for mp4 containers, and
is interesting because it's usually the only subtitle format supported
by the stock playback applications on iOS and Android devices.
ffmpeg already had basic support for these subtitles which ignored all
formatting information - it just provided basic plain-text support.
Niklesh did work to add support on both the encode and decode side for
text formatting capabilities, such as font size/colour and effects like
bold/italics, highlighting, etc.
The main challenge here is that Timed Text handles formatting in a very
different way from most common subtitle formats. It uses a binary
encoding (based on mp4 boxes, naturally) and stores information
separately from the text itself. This requires additional work to track
which parts of the text formatting applies to, and explicitly dealing
with overlapping formatting (which other formats support but Timed
Text does not) so it requires breaking the overlapping sections into
separate non-overlapping ones with different formatting.
Finally, Niklesh had to be careful about not trusting any size
information in the subtitles - and that's no joke: the now infamous
Android stagefright bug was in code for parsing Timed Text subtitles.
All of Niklesh's work is committed and was released in ffmpeg 2.8.
libswscale refactoring, mentee: Pedro Arthur, mentors: Michael Niedermayer, Ramiro Polla
Pedro Arthur has modularized the vertical and horizontal scalers.
To do this he designed and implemented a generic filter framework
and moved the existing scaler code into it. These changes now allow
easily adding removing, splitting or merging processing steps.
The implementation was benchmarked and several alternatives were
tried to avoid speed loss.
He also added gamma corrected scaling support.
An example to use gamma corrected scaling would be:
ffmpeg -i input -vf scale=512:384:gamma=1 output
Pedro has done impressive work considering the short time available,
and he is a FFmpeg committer now. He continues to contribute to
FFmpeg, and has fixed some bugs in libswscale after GSoC has
ended.
AAC Encoder Improvements, mentee: Rostislav Pehlivanov, mentor: Claudio Freire
Rostislav Pehlivanov has implemented PNS, TNS, I/S coding and main
prediction on the native AAC encoder. Of all those extensions, only
TNS was left in a less-than-usable state, but the implementation has
been pushed (disabled) anyway since it's a good basis for further
improvements.
PNS replaces noisy bands with a single scalefactor representing the
energy of that band, gaining in coding efficiency considerably, and
the quality improvements on low bitrates are impressive for such a
simple feature.
TNS still needs some polishing, but has the potential to reduce coding
artifacts by applying noise shaping in the temporal domain (something
that is a source of annoying, notable distortion on low-entropy
bands).
Intensity Stereo coding (I/S) can double coding efficiency by
exploiting strong correlation between stereo channels, most effective
on pop-style tracks that employ panned mixing. The technique is not as
effective on classic X-Y recordings though.
Finally, main prediction improves coding efficiency by exploiting
correlation among successive frames. While the gains have not been
huge at this point, Rostislav has remained active even after the GSoC,
and is polishing both TNS and main prediction, as well as looking for
further improvements to make.
In the process, the MIPS port of the encoder was broken a few times,
something he's also working to fix.
Animated Portable Network Graphics (APNG), mentee: Donny Yang, mentor: Paul B Mahol
Donny Yang implemented basic keyframe only APNG encoder as the
qualification task. Later he wrote interframe compression via
various blend modes. The current implementation tries all blend
modes and picks one which takes the smallest amount of memory.
Special care was taken to make sure that the decoder plays
correctly all files found in the wild and that the encoder
produces files that can be played in browsers that support APNG.
During his work he was tasked to fix any encountered bug in the
decoder due to the fact that it doesn't match APNG
specifications. Thanks to this work, a long standing bug in the
PNG decoder has been fixed.
For latter work he plans to continue working on the encoder,
making it possible to select which blend modes will be used in the
encoding process. This could speed up encoding of APNG files.
September 9th, 2015, FFmpeg 2.8
We published release
2.8
as new major version.
It contains all features and bug fixes of the git master branch from September 8th. Please see
changelog
for a list of the most important changes.
We recommend users, distributors and system integrators to upgrade unless they use current git master.
August 1st, 2015, A message from the FFmpeg project
Dear multimedia community,
The resignation of Michael Niedermayer as leader of FFmpeg yesterday has
come by surprise. He has worked tirelessly on the FFmpeg project for many
years and we must thank him for the work that he has done. We hope that in
the future he will continue to contribute to the project. In the coming
weeks, the FFmpeg project will be managed by the active contributors.
The last four years have not been easy for our multimedia community - both
contributors and users. We should now look to the future, try to find
solutions to these issues, and to have reconciliation between the forks,
which have split the community for so long.
Unfortunately, much of the disagreement has taken place in inappropriate
venues so far, which has made finding common ground and solutions
difficult. We aim to discuss this in our communities online over the coming
weeks, and in person at the
VideoLAN Developer
Days
in Paris in September: a neutral venue for the entire open source
multimedia community.
The FFmpeg project.
July 4th, 2015, FFmpeg needs a new host
UPDATE:
We have received more than 7 offers for hosting and servers, thanks a lot to everyone!
After graciously hosting our projects (
MPlayer
rtmpdump
) for 4 years, Arpi (our hoster) has informed us that we have to secure a new host somewhere else immediately.
If you want to host an open source project, please let us know, either on
ffmpeg-devel
mailing list or irc.freenode.net #ffmpeg-devel.
We use about 4TB of storage and at least 4TB of bandwidth / month for various mailing lists,
samples repo
, svn, etc.
March 16, 2015, FFmpeg 2.6.1
We have made a new major release (
2.6
and now one week afterward 2.6.1. It contains all features and bugfixes of the git master branch from the 6th March.
Please see the
Release Notes
for a
list of note-worthy changes.
March 4, 2015, Google Summer of Code
Project. If you wish to
You can already get in contact with mentors and start working on qualification tasks. Registration
at Google for students will open March 16th. Good luck!
March 1, 2015, Chemnitzer Linux-Tage
We happily announce that FFmpeg will be represented at Chemnitzer Linux-Tage
(CLT) in Chemnitz, Germany. The event will take place on 21st and 22nd of March.
More information can be found
here
We demonstrate usage of FFmpeg, answer your questions and listen to
your problems and wishes.
If you have media files that cannot be
processed correctly with FFmpeg, be sure to have a sample with you
so we can have a look!
For the first time in our CLT history, there will be an
FFmpeg workshop
You can read the details
The workshop is targeted at FFmpeg beginners. First the basics of
multimedia will be covered. Thereafter you will learn how to use
that knowledge and the FFmpeg CLI tools to analyse and process media
files. The workshop is in German language only and prior registration
is necessary. The workshop will be on Saturday starting at 10 o'clock.
We are looking forward to meet you (again)!
December 5, 2014, FFmpeg 2.5
2.5
It contains all features and bugfixes of the git master branch from the 4th December.
October 10, 2014, FFmpeg is in Debian unstable again
We wanted you to know there are
FFmpeg packages in Debian unstable
again.
A big thank-you
to Andreas Cadhalpun and all the people that made it possible.
It has been anything but simple.
Unfortunately that was already the easy part of this news. The bad news is the packages probably won't
migrate to Debian testing to be in the upcoming release codenamed jessie.
Read the argumentation over at Debian.
However things will come out in the end, we hope for your continued remarkable support!
October 8, 2014, FFmpeg secured a place in OPW!
Thanks to a generous 6K USD donation by Samsung (Open Source Group),
FFmpeg will be welcoming at least 1 "Outreach Program for Women" intern
to work with our community for an initial period starting December 2014
(through March 2015).
We all know FFmpeg is used by the industry, but even while there are
countless products building on our code, it is not at all common for
companies to step up and help us out when needed. So a big thank-you
to Samsung and the OPW program committee!
If you are thinking on participating in OPW as an intern, please take
a look at our
OPW wiki page
for some initial guidelines. The page is still a work in progress, but
there should be enough information there to get you started. If you, on
the other hand, are thinking on sponsoring work on FFmpeg through the
OPW program, please get in touch with us at opw@ffmpeg.org. With your
help, we might be able to secure some extra intern spots for this round!
September 15, 2014, FFmpeg 2.4
2.4
It contains all features and bugfixes of the git master branch from the 14th September.
August 20, 2014, FFmpeg 2.3.3, 2.2.7, 1.2.8
2.3.3
2.2.7
1.2.8
They fix various bugs, as well as CVE-2014-5271 and CVE-2014-5272.
Please see the changelog for more details.
July 29, 2014, Help us out securing our spot in OPW
Following our previous post regarding our participation on this year's
OPW (Outreach Program for Women), we are now reaching out to our users
(both individuals and companies) to help us gather the needed money to
secure our spot in the program.
We need to put together 6K USD as a minimum but securing more funds would
help us towards getting more than one intern.
You can donate by credit card using
Click&Pledge
and selecting the "OPW" option. If you would like to
donate by money transfer or by check, please get in touch by
e-mail
and we will get back to you
with instructions.
Thanks!
July 20, 2014, New website
The FFmpeg project is proud to announce a brand new version of the website
made by
db0
. While this was initially motivated
by the need for a larger menu, the whole website ended up being redesigned,
and most pages got reworked to ease navigation. We hope you'll enjoy
browsing it.
July 17, 2014, FFmpeg 2.3
2.3
It contains all features and bugfixes of the git master branch from the 16th July.
July 3, 2014, FFmpeg and the Outreach Program For Women
FFmpeg has started the process to become an OPW includer organization for the
next round of the program, with internships starting December 9. The
OPW
aims to "Help women (cis and trans)
and genderqueer to get involved in free and open source software". Part of the
process requires securing funds to support at least one internship (6K USD), so
if you were holding on your donation to FFmpeg, this is a great chance for you
to come forward, get in touch and help both the project and a great initiative!
We have set up an
email address
you can use
to contact us about donations and general inquires regarding our participation
in the program. Hope to hear from you soon!
June 29, 2014, FFmpeg 2.2.4, 2.1.5, 2.0.5, 1.2.7, 1.1.12, 0.10.14
2.2.4
2.1.5
2.0.5
1.2.7
1.1.12
0.10.14
They fix a
security issue in the LZO implementation
as well as several other bugs. See the git log for details.
May 1, 2014, LinuxTag
Once again FFmpeg will be represented at LinuxTag in Berlin, Germany. The event will
take place from 8th to 10th of May. Please note that this year's LinuxTag is at a
different location closer to the city center.
We will have a shared booth with XBMC and VideoLAN.
If you have media files that cannot be processed correctly with
FFmpeg, be sure to have a sample with you so we can have a look!
More information about LinuxTag can be found
We are looking forward to see you in Berlin!
April 18, 2014, OpenSSL Heartbeat bug
Our server hosting the Trac issue tracker was vulnerable to the attack
against OpenSSL known as "heartbleed". The OpenSSL software library
was updated on 7th of April, shortly after the vulnerability was publicly
disclosed. We have changed the private keys (and certificates) for all
FFmpeg servers. The details were sent to the mailing lists by
Alexander Strasser, who is part of the project server team. Here is a
link to the user mailing list
archive
We encourage you to read up on
"OpenSSL heartbleed"
It is possible that login data for the issue tracker was exposed to
people exploiting this security hole. You might want to change your password
in the tracker and everywhere else you used that same password.
April 11, 2014, FFmpeg 2.2.1
We have made a new point releases (
2.2.1
It contains bug fixes for Tickets #2893, #3432, #3469, #3486, #3495 and #3540 as well as
several other fixes.
See the git log for details.
March 24, 2014, FFmpeg 2.2
2.2
It contains all features and bugfixes of the git master branch from 1st March.
A partial list of new stuff is below:
- HNM version 4 demuxer and video decoder
- Live HDS muxer
- setsar/setdar filters now support variables in ratio expressions
- elbg filter
- string validation in ffprobe
- support for decoding through VDPAU in ffmpeg (the -hwaccel option)
- complete Voxware MetaSound decoder
- remove mp3_header_compress bitstream filter
- Windows resource files for shared libraries
- aeval filter
- stereoscopic 3d metadata handling
- WebP encoding via libwebp
- ATRAC3+ decoder
- VP8 in Ogg demuxing
- side & metadata support in NUT
- framepack filter
- XYZ12 rawvideo support in NUT
- Exif metadata support in WebP decoder
- OpenGL device
- Use metadata_header_padding to control padding in ID3 tags (currently used in
MP3, AIFF, and OMA files), FLAC header, and the AVI "junk" block.
- Mirillis FIC video decoder
- Support DNx444
- libx265 encoder
- dejudder filter
- Autodetect VDA like all other hardware accelerations
February 3, 2014, Chemnitzer Linux-Tage
We happily announce that FFmpeg will be represented at `Chemnitzer Linux-Tage'
in Chemnitz, Germany. The event will take place on 15th and 16th of March.
We invite you to visit us at our booth located in the Linux-Live area!
There we will demonstrate usage of FFmpeg, answer your questions and listen to
February 9, 2014, trac.ffmpeg.org / trac.mplayerhq.hu Security Breach
The server on which FFmpeg and MPlayer Trac issue trackers were
installed was compromised. The affected server was taken offline
and has been replaced and all software reinstalled.
FFmpeg Git, releases, FATE, web and mailinglists are on other servers
and were not affected. We believe that the original compromise happened
to a server, unrelated to FFmpeg and MPlayer, several months ago.
That server was used as a source to clone the VM that we recently moved
Trac to. It is not known if anyone used the backdoor that was found.
We recommend all users to change their passwords.
Especially users who use a password on Trac that they also use
elsewhere, should change that password at least elsewhere.
November 12, 2013, FFmpeg RFP in Debian
Since the splitting of Libav the Debian/Ubuntu maintainers have followed
the Libav fork. Many people have requested the packaging of ffmpeg in
Debian, as it is more feature-complete and in many cases less buggy.
Rogério Brito
, a Debian developer,
has proposed a Request For Package (RFP) in the Debian bug tracking
system.
Please let the Debian and Ubuntu developers know that you support packaging
of the real FFmpeg! See Debian
ticket #729203
for more details.
October 28, 2013, FFmpeg 2.1
2.1
It contains all features and bugfixes of the git master branch from 28th October.
- aecho filter
- perspective filter ported from libmpcodecs
- ffprobe -show_programs option
- compand filter
- RTMP seek support
- when transcoding with ffmpeg (i.e. not streamcopying), -ss is now accurate
even when used as an input option. Previous behavior can be restored with
the -noaccurate_seek option.
- ffmpeg -t option can now be used for inputs, to limit the duration of
data read from an input file
- incomplete Voxware MetaSound decoder
- read EXIF metadata from JPEG
- DVB teletext decoder
- phase filter ported from libmpcodecs
- w3fdif filter
- Opus support in Matroska
- FFV1 version 1.3 is stable and no longer experimental
- FFV1: YUVA(444,422,420) 9, 10 and 16 bit support
- changed DTS stream id in lavf mpeg ps muxer from 0x8a to 0x88, to be
more consistent with other muxers.
- adelay filter
- pullup filter ported from libmpcodecs
- ffprobe -read_intervals option
- Lossless and alpha support for WebP decoder
- Error Resilient AAC syntax (ER AAC LC) decoding
- Low Delay AAC (ER AAC LD) decoding
- mux chapters in ASF files
- SFTP protocol (via libssh)
- libx264: add ability to encode in YUVJ422P and YUVJ444P
- Fraps: use BT.709 colorspace by default for yuv, as reference fraps decoder does
- make decoding alpha optional for prores, ffv1 and vp6 by setting
the skip_alpha flag.
- ladspa wrapper filter
- native VP9 decoder
- dpx parser
- max_error_rate parameter in ffmpeg
- PulseAudio output device
- ReplayGain scanner
- Enhanced Low Delay AAC (ER AAC ELD) decoding (no LD SBR support)
- Linux framebuffer output device
- HEVC decoder, raw HEVC demuxer, HEVC demuxing in TS, Matroska and MP4
- mergeplanes filter
Past news
Hosting provided by
telepoint.bg