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James Almer 76049d1c45 avformat/iamf_writer: fix setting num_samples_per_frame for OPUS 
As per section 3.11.1 of the IAMF spec, the sample rate used in Codec Config
for Opus shall be 48kHz, regardless of the original sample rate used during
encoding.

Signed-off-by: James Almer <jamrial@gmail.com>
2024-12-19 22:06:22 -03:00
compat compat/w32pthreads: change pthread_t into pointer to malloced struct 2024-12-16 09:43:19 +01:00
doc lavc/packet: add API for an AVPacket-based AVContainerFifo 2024-12-15 14:05:33 +01:00
ffbuild configure: Add wasm as a fake arch 2024-12-04 16:43:06 +08:00
fftools fftools/sync_queue: switch from AVFifo+ObjPool to AVContainerFifo 2024-12-15 14:05:34 +01:00
libavcodec avcodec/amfenc: B-Frame support for av1_amf encoder. 2024-12-20 00:43:52 +01:00
libavdevice avdevice/dshow: fix unused variable warning 2024-10-17 13:04:17 +02:00
libavfilter avfilter/af_ashowinfo: fix scaling factor of replaygain peak values 2024-12-07 12:03:53 -05:00
libavformat avformat/iamf_writer: fix setting num_samples_per_frame for OPUS 2024-12-19 22:06:22 -03:00
libavutil avutil/mem_internal: Don't include stdalign.h on MSVC 2024-12-18 16:03:06 +02:00
libpostproc */version.h: bump after release/7.1 branch 2024-09-24 17:10:35 +02:00
libswresample arm: Consistently use proper interworking function returns 2024-10-09 15:52:51 +03:00
libswscale tests/swscale: allow nonzero positive return codes from sws_scale_frame() 2024-12-18 17:30:48 +01:00
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Changelog avcodec/libx265: add alpha layer encoding support 2024-12-16 00:50:52 +01:00
configure amfenc: Update the min version to 1.4.35.0 for AMF SDK. 2024-12-20 00:43:42 +01:00
CONTRIBUTING.md
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CREDITS Use https for repository links 2023-03-01 21:59:10 +01:00
INSTALL.md INSTALL: explain the circular dependency issue and solution 2024-11-03 19:35:23 +01:00
LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS MAINTAINERS: Lauri is still available but is really low on time nowadays 2024-11-28 23:19:00 +01:00
Makefile configure: Add wasm as a fake arch 2024-12-04 16:43:06 +08:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE RELEASE: update release number after release/7.1 branch 2024-10-09 01:55:50 +02:00

README.md

FFmpeg README

FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.

Libraries

  • libavcodec provides implementation of a wider range of codecs.
  • libavformat implements streaming protocols, container formats and basic I/O access.
  • libavutil includes hashers, decompressors and miscellaneous utility functions.
  • libavfilter provides means to alter decoded audio and video through a directed graph of connected filters.
  • libavdevice provides an abstraction to access capture and playback devices.
  • libswresample implements audio mixing and resampling routines.
  • libswscale implements 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, ismindex and qt-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.