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Subtitle issue with DASH output #288

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pscplayco opened this issue Jul 17, 2018 · 1 comment
Open

Subtitle issue with DASH output #288

pscplayco opened this issue Jul 17, 2018 · 1 comment

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@pscplayco
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When using Bento4 to package a stream with stpp subtitles, mp4dash tool is producing an MPD Manifest where the "Representation" section for the subtitles Adaptation Set is positioned before the SegmentTemplate section. For some players, it may work (like for DASH_IF test player), but for example for Exoplayer it makes it not be able to read the subtitles.

After having filed an issue in Exoplayer GitHub project, it seems the DASH specification states the sections should be put in the right order. Please have a look at this:

google/ExoPlayer#4524

Thanks
@pscplayco
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Hi there, may I ask if this is sensible enough that it will be fixed please? or maybe it won't, just to get idea as soon as possible. Thanks

pscplayco pushed a commit to pscplayco/Bento4 that referenced this issue Aug 20, 2018
Modification related to issue axiomatic-systems#288. When adding subt…
056561e 
…itles to a DASH MPD presentation, Representation section was placed before the SegmentTemplate sections, which is wrong according to the definition of DASH standard, and causing some players not to fetch subtitles.
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@pscplayco