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The bitrate and speed stats are wrong if the copyts is enabled. Please test with below command: wget http://samples.mplayerhq.hu/MPEG2/foxksaz.ts ./ffmpeg -y -copyts -i ./foxksaz.ts -c:v libx264 -x264opts \ nal-hrd=cbr:force-cfr=1 -b:v 3500k -minrate 3500k -maxrate 3500k -bufsize \ 1000k -c:a mp2 -muxrate 4500k -vframes 1000 test.ts before: frame= 1000 fps=112 q=-1.0 Lsize= 9063kB time=09:10:12.41 bitrate= 2.2kbits/s speed=3.7e+03x after: frame= 1000 fps=112 q=-1.0 Lsize= 9062kB time=00:00:15.78 bitrate=4703.4kbits/s speed=1.77x Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
FFmpeg README
FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
Libraries
libavcodecprovides implementation of a wider range of codecs.libavformatimplements streaming protocols, container formats and basic I/O access.libavutilincludes hashers, decompressors and miscellaneous utility functions.libavfilterprovides a mean to alter decoded Audio and Video through chain of filters.libavdeviceprovides an abstraction to access capture and playback devices.libswresampleimplements audio mixing and resampling routines.libswscaleimplements color conversion and scaling routines.
Tools
- ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
- ffplay is a minimalistic multimedia player.
- ffprobe is a simple analysis tool to inspect multimedia content.
- Additional small tools such as
aviocat,ismindexandqt-faststart.
Documentation
The offline documentation is available in the doc/ directory.
The online documentation is available in the main website and in the wiki.
Examples
Coding examples are available in the doc/examples directory.
License
FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.
Contributing
Patches should be submitted to the ffmpeg-devel mailing list using
git format-patch or git send-email. Github pull requests should be
avoided because they are not part of our review process and will be ignored.