https://itoschum.me/tags/metadata/ Recent content in Metadata on Ito Archives Hugo en-us Mon, 22 Dec 2025 03:00:00 -0500 https://itoschum.me/logs/log_13/ Mon, 22 Dec 2025 03:00:00 -0500 https://itoschum.me/logs/log_13/ <h2 id="objective">Objective</h2> <p>Encode and mux assets for video files ensuring compatibility with iOS 26+ and macOS 26+ (Tahoe).</p> <p>This includes:</p> <ul> <li>Embedding subtitles in Apple’s <code>tx3g</code> format.</li> <li>Incorporating chapter markers with both text labels and thumbnail images.</li> </ul> <h2 id="1-chapter-metadata-specification">1. Chapter Metadata Specification</h2> <p>To ensure chapters are recognized, the metadata file must follow the FFMETADATA header format with timestamps in nanoseconds (or based on timebase).</p>