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Thread: variable framerate HLS

  1. #1

    Default variable framerate HLS


    I am using Wowza-3.5.0 and I am able to do ABR HLS. I have a scenario whose details are given below:

    stream 1 : bitrate = 800Kbps framerate = 30 key-frame-interval = 1 sec
    stream 2 : bitrate = 400Kbps framerate = 25 key-frame-interval = 1 sec
    stream 3 : bitrate = 100Kbps framerate = 15 key-frame-interval = 1 sec

    So my query is, with the above scenario ( variable frame-rate across 3 streams and different bitrates ) is it possible to do HLS using wowza.? How does the Key-frame sync happens.?? Does wowza require equal framerate across all input streams for HLS?

    Thanks in advance.

  2. #2


    As long as the key frames are aligned this should work.

    You can check if the key frames are aligned by enabling these properties:
    How to debug encoder multi-bitrate key frame alignment


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