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Thread: Both Embedded and External captions with SMIL not working for WebVTT only

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  1. #1
    Join Date
    Nov 2012
    Posts
    5

    Default Both Embedded and External captions with SMIL not working for WebVTT only

    Hi all,

    I have Embedded 3GPP captions in an MP4 video and this is working perfectly in RTMP, HDS & HLS (both CEA-608 & WebVTT).

    Now, I need adaptive VOD, so I have put two copies of this file in a SMIL (yes same bitrate for now, just testing).


    Using the SMIL: Captions work for RTMP, HDS and HLS (CEA) - but not with WebVTT. I am no longer seeing the caption select menu in iOS.


    I have tried using external TTML & SRT, instead of the embedded 3GPP, no change.


    Conclusion : WebVTT not working on iOS when using a SMIL.

    Please somebody prove me wrong ! with example

  2. #2
    Join Date
    Dec 2007
    Posts
    21,962

    Default

    I will forward your finding. Thanks for the report

    Richard

  3. #3
    Join Date
    Dec 2007
    Posts
    21,962

    Default

    This is being worked on. I don't have a time frame, but it is ongoing work.

    Richard

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