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v1.55.4

Vanilagy/mediabunnyv1.55.4Aug 29, 2026by Vanilagy

AI Summary

This release focuses on color space handling and video parsing logic, specifically for AV1, VP9, and AVC formats, while improving container muxing capabilities.

Key Highlights

  • Direct extraction of color space information from video bitstreams
  • Fixed AV1 and VP9 packet parsing logic
  • Fixed `vpcC` box generation for color spaces
  • ISOBMFF and Matroska now support partial color space information

Full Release Notes

- Added logic that extracts color space information directly from the video bitstream if no metadata is set in the container
- Fixed incomplete color space being passed to Chromium's `VideoDecoder`, resulting in incorrect colors
- Fixed AV1 and VP9 packet parsing logic
- Fixed `vpcC` box generation
- ISOBMFF and Matroska muxers now mux even partial color space information into the container
- Fixed missing audio decoding timestamp offset in rare cases
- Fixed Chromium choking on AVC SEI recovery points