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Thread: iOS live stream cutoff issue

  1. #1
    Join Date
    Aug 2010
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    13

    Default iOS live stream cutoff issue

    We've noticed that when we run a live stream with Flash and iOS streaming, that when the stream is killed, the iOS stream is cut off by about 15 seconds.

    We are using Wowza 2.2.4, using the following encoder settings:
    H.264, 30fps, 320x240, mp3 mono 64k.

    We also notice a similar issue using SHOUTcast, although the cut off is somewhat less, generally around 7 seconds.

    You can test this by recording yourself counting down seconds from 30. When you get to 0, kill the encode. Flash plays through to the moment you stop, but iOS will cut off anywhere from 7 to 21 in our experience. We are using the default iOS chunk settings.

    Does anyone else have this issue, and is there a workaround for it?

  2. #2
    Join Date
    Dec 2007
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    22,013

    Default

    Are you using a developer license? There are time limits to live HTTP streaming

    Richard

  3. #3
    Join Date
    Aug 2010
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    13

    Default

    Quote Originally Posted by rrlanham View Post
    Are you using a developer license? There are time limits to live HTTP streaming

    Richard
    No we have a full license. The amount cut off is the same regardless of how long the stream is up.

  4. #4
    Join Date
    Dec 2007
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    22,013

    Default

    Zip up and send the conf and logs to support@wowza.com

    Include encoder/encoding details, you can send screen shot(s) if convenient. And screen shots of player if possible.

    Include a link to this thread for reference.

    Richard

  5. #5
    Join Date
    Aug 2010
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    Default

    Just wanted to update for anyone else having this issue. Thanks to Richard, we figured out that you have to configure the chunk duration to be lower, and the stream gets cut off by a much smaller amount. We set it to 2 seconds and it works pretty well.

    <HTTPStreamers>cupertinostreaming,smoothstreaming</HTTPStreamers>

    <HTTPStreamer>
    <!-- Properties defined here will override any properties defined in conf/HTTPStreamers.xml for any HTTPStreamer loaded by this applications -->
    <Properties>
    <Property>
    <Name>cupertinoChunkDurationTarget</Name>
    <Value>2000</Value>
    <Type>Integer</Type>
    </Property>
    </Properties>
    </HTTPStreamer>

  6. #6
    Join Date
    Aug 2010
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    Default

    So as it turns out, this is working well for us when it comes to video, but we applied a similar setting to our shoutcast audio app and we're having severe problems with the stream. The audio cuts out about 25% of the time, in 2-3 second chunks.

  7. #7
    Join Date
    Dec 2007
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    Default

    Try default "10000". Otherwise, you might have to experiment, see what works best for your shoutcast stream.

    Richard

  8. #8
    Join Date
    Aug 2010
    Posts
    13

    Default

    Quote Originally Posted by rrlanham View Post
    Try default "10000". Otherwise, you might have to experiment, see what works best for your shoutcast stream.

    Richard
    Yeah at 10000 the stream sounds fine, but we lose a big chunk of it at the end. I think we'll have to come up with a work around.

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