mirror of https://git.ffmpeg.org/ffmpeg.git
9ad3db3ad9
These tests test both the demuxer as well as the muxer wherever possible. It is not always possible due to the fact that the muxer supports more codecs than the demuxer. The spdif demuxer does currently not set the need_parsing flag. If one were to set this to AVSTREAM_PARSE_FULL, the test results would change as follows: - For spdif-aac-remux, the packets are currently padded to 16bits, i.e. if the actual packet size is odd, there is a padding byte. The parser splits this byte away into a one byte packet of its own. Insanely, these one byte packets get the same duration as normal packets, i.e. timing is ruined. - The DCA-remux tests get proper duration/timestamps. - In the spdif-mp2-remux test the demuxer marks the stream as being MP2; the parser sets it to MP3 and this triggers the "Codec change in IEC 61937" codepath; this test therefore returns only two packets with the parser. - For spdif-mp3-remux some bytes end up in different packets: Some input packets of this file have an odd length (417B instead of 418B like all the other packets) and are padded to 418B. Without a parser, all returned packets from the spdif-demuxer are 418B. With a parser, the packets that were originally 417B are 417B again, but the padding byte has not been discarded, but added to the next packet which is now 419B. This fixes "Multiple frames in a packet" warning and avoids an "Invalid data found when processing input" error when decoding. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com> |
||
|---|---|---|
| compat | ||
| doc | ||
| ffbuild | ||
| fftools | ||
| libavcodec | ||
| libavdevice | ||
| libavfilter | ||
| libavformat | ||
| libavutil | ||
| libpostproc | ||
| libswresample | ||
| libswscale | ||
| presets | ||
| tests | ||
| tools | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .travis.yml | ||
| CONTRIBUTING.md | ||
| COPYING.GPLv2 | ||
| COPYING.GPLv3 | ||
| COPYING.LGPLv2.1 | ||
| COPYING.LGPLv3 | ||
| CREDITS | ||
| Changelog | ||
| INSTALL.md | ||
| LICENSE.md | ||
| MAINTAINERS | ||
| Makefile | ||
| README.md | ||
| RELEASE | ||
| configure | ||
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
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.