#11673: Incorrect written MP4 Sample Description Entry for DTS codec family -------------------------------------+------------------------------------- Reporter: rix | Type: defect Status: new | Priority: normal Component: avformat | Version: | unspecified Keywords: DTS mp4 mov | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: According to ETSI TS 102 114 Annex E, and ETSI TS 103 491 Annex B, DTS codec family should be signaled with specific Sample Description Entry boxes and DTSSpecificBox. FFmpeg currently does not produce files conforming to these specs, making these files unplayable on playback systems following the spec. Please refer to ETSI TS 102 114 Table E-1 and ETSI TS 103 491 Table B-1 for the Sample Description Entry tag mapping for different DST codecs. How to reproduce: {{{ % ffmpeg -i https://fate-suite.ffmpeg.org/dts/dts.ts -c:a copy dts.mp4 }}} Inspect the resulting MP4 shows the Sample Description Entry has {{{mp4a}}} tag instead of {{{dtsc}}}, and no {{ddts}} box. -- Ticket URL: <https://trac.ffmpeg.org/ticket/11673> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker