Below you will find pages that utilize the taxonomy term “Chapter Markers”

Logs

Apple-Compliant MP4 Encapsulation with Chapter Markers and Subtitles via FFmpeg

Objective

Encode and mux assets for video files ensuring compatibility with iOS 26+ and macOS 26+ (Tahoe).

This includes:

  • Embedding subtitles in Apple’s tx3g format.
  • Incorporating chapter markers with both text labels and thumbnail images.

1. Chapter Metadata Specification

To ensure chapters are recognized, the metadata file must follow the FFMETADATA header format with timestamps in nanoseconds (or based on timebase).

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