AVFoundation how to add subtitles track to AVComposition

Asked Feb 06 '14 at 12:38

Active Feb 06 '14 at 12:38

Viewed 896 times

I want to add a track of type AVMediaTypeSubtitle to AVMutableComposition the adding itself is easy, but how to populate this Track? and how to read it later?!!

I can't find any thing related to how to read/write a track of type AVMediaTypeSubtitle !!

asked Feb 06 '14 at 12:38

AMTourky

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did you try to load your AVAssetTrack with an .srt file to see how it works? – Nicolas Manzini Feb 06 '14 at 12:43
you can't load AVAssetTrack, but you can load AVAsset, and yes I tried and it didn't recognize any thing – AMTourky Feb 06 '14 at 12:51
did you try to load (IDX/SUB) format? – Nicolas Manzini Feb 06 '14 at 12:58
no, but I tried .scc and nothing you know that it works somehow or you are guessing? and what about reading, let's say I've mp4 file that has on it a subtitle track, how to play it??? – AMTourky Feb 06 '14 at 13:07
no no, i have no idea but i would be interested in knowing because indeed i cant find info about this trackType either. – Nicolas Manzini Feb 06 '14 at 13:11
then I think voting up the question may be a good idea – AMTourky Feb 06 '14 at 13:15
I did upvote your question. – Nicolas Manzini Feb 06 '14 at 13:15
sorry, I didn't notice – AMTourky Feb 06 '14 at 13:16
Did you try https://w3c.github.io/webvtt/ ? – Martin Delille Jul 05 '16 at 18:08

AVFoundation how to add subtitles track to AVComposition

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