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chromium / chromium / third_party / ffmpeg / 8de3458a07376b0a96772e586b6dba5e93432f52
commit8de3458a07376b0a96772e586b6dba5e93432f52[log] [tgz]
authorBen Chang <[email protected]>Tue Apr 25 21:57:56 2017
committerTimo Rothenpieler <[email protected]>Wed Apr 26 19:57:54 2017
tree1349f65fd1d08cdc1f1dc7372cf4027b8a2d3af4
parent78a5fc4579deb63e1e6b93cd4d6e2ec2dceff931 [diff]
avcodec/nvenc: surface allocation reduction

This patch aims to reduce the number of input/output surfaces
NVENC allocates per session. Previous default sets allocated surfaces to 32
(unless there is user specified param or lookahead involved). Having large
number of surfaces consumes extra video memory (esp for higher resolution
encoding). The patch changes the surfaces calculation for default, B-frames,
lookahead scenario respectively.

The other change involves surface selection. Previously, if a session
allocates x surfaces, only x-1 surfaces are used (due to combination
of output delay and lock toggle logic). To prevent unused surfaces,
changing surface rotation to using predefined fifo.

Signed-off-by: Timo Rothenpieler <[email protected]>
4 files changed
tree: 1349f65fd1d08cdc1f1dc7372cf4027b8a2d3af4
  1. compat/
  2. doc/
  3. libavcodec/
  4. libavdevice/
  5. libavfilter/
  6. libavformat/
  7. libavresample/
  8. libavutil/
  9. libpostproc/
  10. libswresample/
  11. libswscale/
  12. presets/
  13. tests/
  14. tools/
  15. .gitattributes
  16. .gitignore
  17. .travis.yml
  18. arch.mak
  19. Changelog
  20. cmdutils.c
  21. cmdutils.h
  22. cmdutils_common_opts.h
  23. cmdutils_opencl.c
  24. common.mak
  25. configure
  26. CONTRIBUTING.md
  27. COPYING.GPLv2
  28. COPYING.GPLv3
  29. COPYING.LGPLv2.1
  30. COPYING.LGPLv3
  31. CREDITS
  32. ffmpeg.c
  33. ffmpeg.h
  34. ffmpeg_cuvid.c
  35. ffmpeg_dxva2.c
  36. ffmpeg_filter.c
  37. ffmpeg_opt.c
  38. ffmpeg_qsv.c
  39. ffmpeg_vaapi.c
  40. ffmpeg_vdpau.c
  41. ffmpeg_videotoolbox.c
  42. ffplay.c
  43. ffprobe.c
  44. ffserver.c
  45. ffserver_config.c
  46. ffserver_config.h
  47. INSTALL.md
  48. library.mak
  49. LICENSE.md
  50. MAINTAINERS
  51. Makefile
  52. README.md
  53. RELEASE
  54. version.sh
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.