984d0b6e6f
Aliases are also used in scale and zscale filters. Tested: ``` $ ./ffmpeg -hide_banner -y -i ~/src/media/images/y4m/lena.490x490.y4m -pix_fmt yuv420p -color_range unknown /tmp/unknown.y4m ... $ md5sum /tmp/unknown.y4m 69aa7bf52bbd72444268a544c81d7643 /tmp/unknown.y4m $ ./ffmpeg -hide_banner -y -i ~/src/media/images/y4m/lena.490x490.y4m -pix_fmt yuv420p -color_range tv /tmp/tv.y4m ... $ md5sum /tmp/tv.y4m 5c1c8759708ff6b25dd8a660da5200e7 /tmp/tv.y4m $ ./ffmpeg -hide_banner -y -i ~/src/media/images/y4m/lena.490x490.y4m -pix_fmt yuv420p -color_range pc /tmp/pc.y4m ... $ md5sum /tmp/pc.y4m 1ccb85d14a3dfecb22e625711587ba97 /tmp/pc.y4m $ ./ffmpeg -hide_banner -y -i ~/src/media/images/y4m/lena.490x490.y4m -pix_fmt yuv420p -color_range limited /tmp/limited.y4m ... $ md5sum /tmp/limited.y4m 5c1c8759708ff6b25dd8a660da5200e7 /tmp/limited.y4m $ ./ffmpeg -hide_banner -y -i ~/src/media/images/y4m/lena.490x490.y4m -pix_fmt yuv420p -color_range full /tmp/full.y4m ... $ md5sum /tmp/full.y4m 1ccb85d14a3dfecb22e625711587ba97 /tmp/full.y4m ``` Also ran fate. ``` $ make fate -j ... TEST ffprobe_xsd TEST flv-add_keyframe_index ```
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 means to alter decoded audio and video through a directed graph of connected 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.