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Thread: VOD adaptive bitrate streaming

  1. #1
    Join Date
    Feb 2014

    Default VOD adaptive bitrate streaming


    we use MediaExcel to encode different bitrates of the same live content. MediaExcel will stream 350p,480p, 720p and 1080p streams to Wowza.
    We then start recording and split manually (based on a schedule) on each version at the same time.
    In the documentation it is specified that the resulting VOD files have to be aligned on keyframe for adaptive switching to work properly.

    Will adaptive streaming work in this scenario?We are not sure if the keyframes will be aligned .
    How do you recommend is the best way to do adaptive bit streaming? Is transcoding to different bitrates after recording a better choice?


  2. #2


    You can test if the different renditions of the stream are key frame aligned by using this guide:
    How to debug encoder multi-bitrate key frame alignment

    The switching between renditions requires the key frames are exactly aligned, so if the encoder is not capable of this then the Wowza Transcoder would be the way to go.


  3. #3


    You can set up a schedule using this guide to test if key frames are aligned using the previous guide I posted:
    How to do scheduled streaming with Wowza Streaming Engine (StreamPublisher)


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