Quentin King 194f0189fc feat: Embed AUDIBLE_ASIN metadata in m4b files ... - Add AUDIBLE_ASIN tag to FFmpeg metadata object - Use -movflags use_metadata_tags to preserve custom tags in mp4/m4b - Fix .m4b extension detection for mp4 format handling - Remove redundant -map_metadata 0 option - Update tests to match new FFmpeg options The mp4 muxer in FFmpeg only writes standard iTunes tags by default. Custom tags like AUDIBLE_ASIN are silently dropped unless use_metadata_tags is specified. Tested and verified with ffprobe and mediainfo on clean m4b files.		2026-01-03 04:18:42 -06:00
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server	feat: Embed AUDIBLE_ASIN metadata in m4b files	2026-01-03 04:18:42 -06:00