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Thread: How to lower the delay in cupertino stream?

  1. #1
    Join Date
    Sep 2012
    Posts
    3

    Default How to lower the delay in cupertino stream?

    I have reviewed the forum and I followed http://www.wowza.com/forums/content.php?88 page but I can not lose late 15s.
    My emission is at 320x240 with 30fps and 1 keyFrameInterval.
    I have in my applications.xml:
    <Property>
    <Name> CupertinoChunkDurationTarget </ Name>
    <Value> 1000 </ Value>
    <Type> Integer </ Type>
    </ Property>
    <Property>
    <Name> CupertinoMaxChunkCount </ Name>
    <Value> 2 </ Value>
    <Type> Integer </ Type>
    </ Property>
    <Property>
    <Name> CupertinoPlaylistChunkCount </ Name>
    <Value> 1 </ Value>
    <Type> Integer </ Type>
    </ Property>
    <Property>
    <Name> CupertinoRepeaterChunkCount </ Name>
    <Value> 1 </ Value>
    <Type> Integer </ Type>
    </ Property>

    Thank

  2. #2
    Join Date
    Sep 2011
    Posts
    1,933

    Default

    Hi
    Unfortunately you will always have a delay on any iOS device due to how HLS works.
    I don't think you're going to get the delay lower than 15 seconds I'm afraid.

    Jason

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

    Default

    Actually, you can reduce. Take a look at this guide:

    http://www.wowza.com/forums/content....tinostreaming)

    It is the settings above along with adjustment to the stream's key frame frequency. Try 2 second key frame frequency and cupertinoChunkDurationTarget "2000"

    Richard

  4. #4
    Join Date
    Sep 2012
    Posts
    3

    Default

    Thank Richard.

    I've checked the url and changes, not lower than 12-15 seconds.
    What is the minimum delay?
    What is the video settings to get lower the delay?
    My configuration
    320x240 30fps
    H264, baseline, level 3.1, 2 second keyframes.

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