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Andreas Rheinhardt 3b49688440 avformat/movenc: Fix segfault when remuxing rtp hint stream 
When remuxing an rtp hint stream (or any stream with the tag "rtp "),
the mov muxer treats this as one of the rtp hint tracks it creates
internally when ordered to do so; yet this track lacks the
AVFormatContext for the hinting rtp muxer, leading to segfaults in
mov_write_udta_sdp() if a "trak" atom is written for this stream; if not,
the stream's codecpar is freed by mov_free() as if the mov muxer owned
it (it does for the internally created "rtp " tracks), but without
resetting st->codecpar, leading to double-frees lateron. This commit
therefore ignores said tag which makes rtp hint streams unremuxable.

This fixes tickets #8181 and #8186.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
(cherry picked from commit 22c3cd1760)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2022-04-13 23:39:49 +02:00
compat compat/cuda/ptx2c: strip CR from each line 2017-08-30 11:20:34 +02:00
doc Update for 3.4.9 2021-09-12 21:40:20 +02:00
ffbuild build: prevent SDL2 from polluting global cflags and extralibs 2017-10-09 21:41:11 -03:00
fftools fftools/ffmpeg: Free swresample dictionary during cleanup 2020-07-03 00:03:45 +02:00
libavcodec avcodec/flac_parser: Consider AV_INPUT_BUFFER_PADDING_SIZE 2022-04-13 23:39:49 +02:00
libavdevice avdevice/decklink_dec: Fix ;; 2018-06-18 01:16:03 +02:00
libavfilter avfilter/scale_npp: fix non-aligned output frame dimensions 2021-10-07 18:39:44 +02:00
libavformat avformat/movenc: Fix segfault when remuxing rtp hint stream 2022-04-13 23:39:49 +02:00
libavresample Bump minor versions for branching 3.4 2017-10-11 01:23:47 +02:00
libavutil avutil/mathematics: Document av_rescale_rnd() behavior on non int64 results 2022-04-13 23:39:49 +02:00
libpostproc postproc/postprocess_template: remove FF_REG_sp from clobber list 2019-03-24 10:38:51 +01:00
libswresample swresample/swresample: Fix input channel count in resample_first computation 2018-10-28 02:22:42 +02:00
libswscale swscale/alphablend: Fix slice handling 2021-10-09 18:34:49 +02:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests avcodec/vp56rac: delay signaling an error on truncated input 2019-11-15 12:25:46 +01:00
tools tools/cws2fws: Check read() for failure 2021-09-11 21:23:49 +02:00
.gitattributes fate: add SCC test 2017-01-27 17:06:42 +01:00
.gitignore build: add support for building .cu files via nvcc 2017-05-15 11:46:50 +02:00
.travis.yml build: Prefer NASM assembler over YASM 2017-06-21 17:00:30 -03:00
Changelog Changelog: update 2021-10-09 18:35:56 +02:00
configure configure: Add missing libshine->mpegaudioheader dependency 2022-01-06 08:53:14 +01:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
INSTALL.md INSTALL: add markdown syntax 2014-05-28 22:38:38 +02:00
LICENSE.md Merge commit '4fef648d10' 2017-03-15 22:07:47 +01:00
MAINTAINERS MAINTAINERS: change the decklink maintainer to myself 2017-10-04 22:44:42 +02:00
Makefile Makefile: generate stripped CLI tools directly instead of copying unstripped ones first 2017-10-10 19:45:14 +02:00
README.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
RELEASE Update for 3.4.9 2021-09-12 21:40:20 +02:00
RELEASE_NOTES Update missed irc links 2021-09-11 21:23:49 +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 a mean to alter decoded Audio and Video through chain of 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.
  • ffserver is a multimedia streaming server for live broadcasts.
  • 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.