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Thread: Fragment duration greater than suggested range of 1-4 seconds WARN

  1. #1

    Default Fragment duration greater than suggested range of 1-4 seconds WARN

    Hello All,

    Just after wowza is restarted I see the following errors in the logs. Is there any specific performance effects of this error?
    We do live streaming over jwplayer. What would be a suggested "keyframe interval" in FMLE settings?

    Thanks in advance.

    I get a
    WARN	server	comment	2011-11-06	01:26:32 -	14963.916	-	LiveStreamPacketizerSmoothStreaming.handlePacket[live/_definst_/credife]: 
    Fragment duration greater than suggested range of 1-4 seconds. 
    Adjust keyframe interval accordingly: Fragment durations: [4.9,4.9,4.9]

  2. #2

    Default

    Set keyframe interval between 1-4 seconds in FMLE.

  3. #3

    Default

    Quote Originally Posted by randall View Post
    Set keyframe interval between 1-4 seconds in FMLE.
    I can ask the streamers to follow that rule. But if they do not do it would there be any consequence to viewers or wowza service health?
    Thanks

  4. #4
    Join Date
    Jun 2012
    Posts
    4

    Default

    We recently upgrade to WMS3 and planning to order adaptive bitrate as add-on
    but after installation i get some error log.

    LiveStreamPacketizerSmoothStreaming.handlePacket[live/_definst_/Stream1]: Fragment duration greater than suggested range of 1-4 seconds. Adjust keyframe interval accordingly: Fragment durations: [0.0,7.4,3.2]

    Not only ios, rtsp is not showing the video at all, it turn black after 3 second and get audio only.
    After that.. disconnect and show warning : "cannot play video"
    We didn't get this error when using WMS 2.

    We're using streamschedule.smil to produce live streaming to rtsp, ios and rtmp at same time.
    what should i do to fix these error?
    Thanks

  5. #5
    Join Date
    Sep 2011
    Posts
    1,931

    Default

    Hi
    It could be a meta data issue take a look at this article,
    http://www.wowza.com/forums/content....to-iOS-Streams

    Did you recreate the application(s) that you had in Wowza 2 or did you try to copy the Application.xml('s) over from the old server?
    If your in control of the encoder streaming to the application set keyframe interval between 1-4 seconds.

    What is the codec information of the inbound stream to Wowza?
    Does it work in VLC?
    For it to work for Android it must be H.264/AAC

    Jason

  6. #6
    Join Date
    Jun 2012
    Posts
    4

    Default

    Hi Jason,
    I create new application(s) from conf folder and copy some property into it.
    It's H264/AAC and it works in VLC but sometimes i get audio only.
    How to set keyframe interval between 1-4 seconds?

  7. #7
    Join Date
    Sep 2011
    Posts
    1,931

    Default

    Hi
    I need to know what encoder you're using to answer that question.

    Jason

  8. #8
    Join Date
    Jun 2012
    Posts
    4

    Default

    Oh Sorry,

    I use FFMPEG.
    320x240, 15fps, vidoe codec: libfaac, libx264 -strict experimental
    vprofile : baseline
    preset : slow
    crf:22 -threads 0 -b 300 -qmin 3 -qmax 5 -bufsize 4096 -g 300
    Audio : 96k, 32000

  9. #9
    Join Date
    Dec 2007
    Posts
    21,962

    Default

    Try changing -g (gop) to 60 and add -r (FPS) set to 30.
    -r 30 -g 60
    or
    -r 24 -g 48
    I.e., -g = -r*2

    That should give you a key frame frequency of 2 seconds, which is ideal.

    Richard

  10. #10
    Join Date
    Sep 2011
    Posts
    1,931

    Default

    Hi
    There should be a command option such as "--keyint 30"

    I did a quick Google search and found this,
    https://sites.google.com/site/linuxe...ffmpeg-mapping

    Jason

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