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A media packaging and development framework for VOD and Live DASH and HLS applications, supporting Common Encryption for Widevine and other DRM Systems.
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Caitlin O'Callaghan f264befe86
feat: Write colr atom to muxed mp4 (#1261) 
This PR is an extension of the full AV1 codec string feature: [PR
1205](https://github.com/shaka-project/shaka-packager/pull/1205) and
relates to [Issue
1007](https://github.com/shaka-project/shaka-packager/issues/1007) and
[Issue
1202](https://github.com/shaka-project/shaka-packager/issues/1202).

As per the AV1 spec, the codec string may contain optional color values.
These color values are critical for detecting HDR video streams - see
[Issue
1007](https://github.com/shaka-project/shaka-packager/issues/1007).
Color information is extracted from the input mp4's `colr` atom and used
to generate the full AV1 codec string. This PR preserves the color
information by writing the `colr` atom to the muxed mp4.

**References**:
- [AV1 Codec ISO Media File Format
Binding](https://aomediacodec.github.io/av1-isobmff/#codecsparam)
- [AV1 Bitstream & Decoding Process
Specification - Section 6.4.2 Color config semantics (page
117)](https://aomediacodec.github.io/av1-spec/av1-spec.pdf)
- [QuickTime File Format
Specification](https://developer.apple.com/library/archive/documentation/QuickTime/QTFF/QTFFChap3/qtff3.html#//apple_ref/doc/uid/TP40000939-CH205-125526)
2023-08-29 18:46:19 -07:00
.github chore: Sync common workflows (#1250) 2023-07-24 17:17:54 -07:00
docs docs: Update build_instructions.md to point to the main branch. (#1186) 2023-07-05 14:31:39 -07:00
npm
packager feat: Write colr atom to muxed mp4 (#1261) 2023-08-29 18:46:19 -07:00
.clang-format
.dockerignore Reduce Docker image size 2018-12-20 13:31:03 -08:00
.gitignore
.gitmodules
AUTHORS fix: Fix handling of non-interleaved multi track FMP4 files (#1214) 2023-08-21 16:34:32 -07:00
CHANGELOG.md
chromium-LICENSE
CONTRIBUTING.md
CONTRIBUTORS fix: Fix handling of non-interleaved multi track FMP4 files (#1214) 2023-08-21 16:34:32 -07:00
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gyp_packager.py
LICENSE
README.md

README.md

Shaka Packager

Shaka Packager is a tool and a media packaging SDK for DASH and HLS packaging and encryption. It can prepare and package media content for online streaming.

Shaka Packager supports:

  • Both Video-On-Demand and Live.

  • Streaming formats:

  • Key systems:

  • Encryption standards:

  • Media Containers and codecs

    Codecs ISO-BMFF WebM MPEG2-TS WVM Packed Audio²
    H264 (AVC) I / O - I / O I -
    H265 (HEVC) I / O - I - -
    VP8 I / O I / O - - -
    VP9 I / O I / O - - -
    AV1 I / O I / O - - -
    AAC I / O - I / O I O
    MP3 O - I / O - O
    Dolby AC3 I / O - I / O - O
    Dolby EAC3 I / O - O - O
    MPEG-H Audio I / O - - - -
    Dolby AC4 I / O - - - -
    DTS I / O - - - -
    FLAC I / O - - - -
    Opus I / O³ I / O - - -
    Vorbis - I / O - - -

    NOTES:

  • Subtitles

    Format Input Output
    Text WebVTT Y Y
    WebVTT in MP4 #405 Y
    Text TTML ⁴ Y
    TTML in MP4 - Y
    DVB-SUB Y -
    Teletext #272 -
    • ⁴: TTML input is only supported with TTML output (pass-through, DASH only), see also #584.
  • Platforms
    • Linux
    • Mac
    • Windows
    • Cross compiling for ARM is also supported.

1: Limited support

Getting Shaka Packager

There are several ways you can get Shaka Packager.

Useful Links

Contributing

If you have improvements or fixes, we would love to have your contributions. See https://github.com/shaka-project/shaka-packager/blob/main/CONTRIBUTING.md for details.