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devdallas1's avatar
devdallas1
Visitor
15 years ago

Live Stream not playing smoothly on Roku

I am running wowza server with wirecast for the live stream, but for some reason the live stream does not play smoothly.
Seems like some frames are moving, there is a slight delay.

Running on i5 Pc, with 25% CPU usage.
Tried running the stream through third party CDN provider, issues is still there. Also, tried running wowza at home with
5 MB upload. Same issue
Replacing the video card did not help either.
Tried different stream settings through wirecast.

Any suggestions?

Thanks in advance
Roku Developer Program

10 Replies

  • RokuKevin's avatar
    RokuKevin
    Visitor
    15 years ago
    The biggest problem with broadcasting a live HLS stream and getting it to play smoothly is uploading your segments to the CDN in a timely manner.... This is where I would start debugging.

    There is a stream monitoring script you can copy out of the encoding guide to help you monitor the uploading of your HLS variant stream segments.

    --Kevin
  • devdallas1's avatar
    devdallas1
    Visitor
    15 years ago
    I looked at the encoding guide and followed the wowza setup guide.

    Im running the broadcasting through wircast on the same pc that is running the wowza server.

    Those of you running your own wowza server.
    Do you make any changes to the application.xml (other than the changes provided in the setup guide) to play the live stream smoothly?
    I dont think its the encoding issue, I think it has to do with the wowza.

    here is the stream url
    http://wz.beatnboom.streamotor.com:1935 ... ylist.m3u8

    Thanks in Advance
  • RokuKevin's avatar
    RokuKevin
    Visitor
    15 years ago
    You only have 3x 10 sec segments in your live sliding segment window. We recommend 8x 10 second segments for smooth playback.

    --Kevin
  • IRoad's avatar
    IRoad
    Visitor
    15 years ago
    Hi, I am not a expert but i have the same problem, on my Ipad and Iphone the channel move smoothly but not in roku.
    Do you know where we nedd change the frequency from 3/10 to 8/10?
    Thank you
    F
  • IRoad's avatar
    IRoad
    Visitor
    15 years ago
    I forgot, I have Wowza Server and also i forgoyt to said, the audio is perfect but the picture present pixel :((((((

    thank you again
  • RokuKevin's avatar
    RokuKevin
    Visitor
    15 years ago
    The wowza parameters for changing the sliding window size are:

    cupertinoPlaylistChunkCount (sliding window size)
    cupertinoMaxChunkCount (make sure it is larger than window size)
  • IRoad's avatar
    IRoad
    Visitor
    15 years ago
    Hi Kevin,
    First all thank you.
    I tried but without results, I am working on main.brs from CUSTOM PLAYER (developer software).
    From my Wowza Server, I put the properties on my Application.xml (Live Origin and on Live Folder).
    My encoding is a H264 Baseline and not a Main, what do you think is it fine.
    The audio is fine but the video is not smootly on Roku
    Do you have any suggestion?
    Thank you
    Flavio
  • RokuKevin's avatar
    RokuKevin
    Visitor
    15 years ago
    What you are doing sounds fine to me. I went to look at your stream, but got a 404.

    --Kevin
  • IRoad's avatar
    IRoad
    Visitor
    15 years ago
    Sorry Kevin,
    Yesterday, the Roku was off, now is up.
    When you have time and if you want, can you check the channel, name is Rai 1.
    Thank you so much
    Flavio