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llyyr d1b96c3808 avformat/mov: avoid seeking back to 0 on HEVC open GOP files 
ab77b878f1 attempted to fix the issue of broken packets being sent to
the decoder by implementing logic that kept attempting to PTS-step
backwards until it reached a valid point, however applying this
heuristic meant that in files that had no valid points (such as HEVC
videos shot on iPhones), we'd seek back to sample 0 on every seek
attempt. This meant that files that were previously seekable, albeit
with some skipped frames, were not seekable at all now.

Relax this heuristic a bit by giving up on seeking to a valid point if
we've tried a different sample and we still don't have a valid point to
seek to. This may some frames to be skipped on seeking but it's better
than not being able to seek at all in such files.

Fixes: ab77b878f1 ("avformat/mov: fix seeking with HEVC open GOP files")
Fixes: #10585
Signed-off-by: Philip Langdale <philipl@overt.org>
 		2024-05-21 18:57:44 -07:00
compat avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
doc lavu/hwcontext_qsv: update AVQSVFramesContext to support dynamic frame pool 2024-05-20 09:30:48 +08:00
ffbuild riscv: add Zvbb vector bit manipulation extension 2024-05-11 11:38:49 +03:00
fftools fftools/ffmpeg_filter: Fix leak on error 2024-05-20 14:15:23 +02:00
libavcodec lavc/vp9dsp: R-V V mc avg 2024-05-21 21:28:14 +03:00
libavdevice lavd/v4l2: Use proper field type for second parameter of ioctl() with BSD's 2024-05-08 21:33:32 +02:00
libavfilter avfilter/vf_dnn_detect: Fix null pointer dereference 2024-05-21 18:17:07 +08:00
libavformat avformat/mov: avoid seeking back to 0 on HEVC open GOP files 2024-05-21 18:57:44 -07:00
libavutil avutil/hwcontext_qsv: fix GCC 14.1 warnings 2024-05-21 16:57:46 +08:00
libpostproc avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
libswresample avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
libswscale swscale/riscv: explicitly require Zbb for MIN 2024-05-10 18:59:06 +03:00
presets
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tests checkasm: h264dsp: Avoid out of buffer writes when benchmarking 2024-05-21 19:20:06 +03:00
tools tools/target_enc_fuzzer: Only read pix_fmts if its set 2024-05-09 16:17:39 +02:00
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MAINTAINERS MAINTAINERS: add myself as *BSD maintainer 2024-05-13 03:40:16 +02:00
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README.md
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RELEASE RELEASE: update after 7.0 branch 2024-04-02 13:02:39 -03:00
configure configure: split ISOBMFF writer helpers into a separate component 2024-05-18 13:21:35 -03:00

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.