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Thread: Wowza cutting off the stream?

  1. #1

    Default Wowza cutting off the stream?

    Hi all -

    Normally I use VidBlasterB in VVD mode and let FMLE do the streaming.

    Today I tried (twice) to test a livestream with a hockey game.
    Game was 130 mins long - I set VB to stream live to the server. Once the game was ended, I went to black and let VB run a good 5 mins.

    Then I waited 10 mins and tried to flip the file over form live to archived, and my archived file recorded to the server is only 73 minutes long???

    The local file that I saved is the correct length.

    I am currently running version 3.03.
    I have been using Wowza since 2006 and have never seen that happen before?

    Machine running webcast:
    Intel i7 870@2.93Ghz
    8GbRAM
    64-bit Win7
    Video card; GeForce GTX 560Ti 2Gb RAM

    Server:
    Dual Xeon E5-2620
    Linux CENTOS 5.8 x86_64
    32Gb RAM
    Load Averages: 0.02 0.07 0.02


    Here is some of my log file from VidBlaster:

    7:29:15 PM frame=60308 q=0.0 size= 988979kB time=2011.3 bitrate=4028.0kbits/s

    7:29:15 PM frame=60392 q=0.0 size= 990460kB time=2014.0 bitrate=4028.7kbits/s

    7:29:16 PM frame=60472 q=0.0 size= 992181kB time=2016.9 bitrate=4029.9kbits/s

    7:29:16 PM frame=60556 q=0.0 size= 993942kB time=2019.6 bitrate=4031.6kbits/s

    7:29:17 PM frame=60645 q=0.0 size= 995988kB time=2022.6 bitrate=4034.0kbits/s

    7:29:17 PM frame=60733 q=0.0 size= 997653kB time=2025.5 bitrate=4034.8kbits/s

    7:29:18 PM frame=60825 q=0.0 size= 999500kB time=2028.5 bitrate=4036.4kbits/s

    7:29:18 PM frame=60916 q=0.0 size= 1001069kB time=2031.5 bitrate=4036.7kbits/s

    7:29:19 PM frame=61010 q=0.0 size= 1002700kB time=2034.6 bitrate=4037.1kbits/s

    7:29:19 PM frame=61100 q=0.0 size= 1004373kB time=2037.8 bitrate=4037.6kbits/s

    7:29:20 PM frame=61193 q=0.0 size= 1005827kB time=2040.8 bitrate=4037.5kbits/s

    7:29:20 PM frame=61285 q=0.0 size= 1007464kB time=2044.0 bitrate=4037.7kbits/s

    7:29:21 PM frame=61380 q=0.0 size= 1009026kB time=2047.1 bitrate=4037.9kbits/s

  2. #2
    Join Date
    Dec 2007
    Posts
    21,962

    Default

    It is likely a network problems, Wowza streams and records the what it gets. I would watch the server-side recording and see what is missing compared to the encoder local recording.

    Are there are any other recordings in the content folder with versioned names like "myStream_01.mp4" ?

    Richard

  3. #3

    Default

    Quote Originally Posted by rrlanham View Post
    It is likely a network problems, Wowza streams and records the what it gets. I would watch the server-side recording and see what is missing compared to the encoder local recording.

    Are there are any other recordings in the content folder with versioned names like "myStream_01.mp4" ?

    Richard
    No other recordings at all.
    The log file does show any connects/disconnects, which it would if the stream lost connectivity due to a network issue.

    Its as if it just decided to be finished at a certain time and didn't tell anyone else.


  4. #4

    Default

    Well it did it again this week.
    No network issues (we were on hardwired Internet)
    Log files show no errors for 2 hours, but only a steady straight broadcast.

    This time it cut off the last 10 minutes.

    Any suggestions?

  5. #5

    Default

    Hi,

    Also check to see if the encoder is buffering the video or dropping frames. It may be buffering a few seconds every so often and when you stop the encoder at the end of the event, it hasn't sent it all to Wowza. There is a setting in fmle to either drop frames or reduce quality if it is going to buffer more than a certain amount so that it doesn't get too far behind. If it drops frames then these don't get sent so don't get recorded. The will probably get recorded locally though.

    You can see what fmle is doing from the log tab and then the statistics tab on the right.

    Roger.

  6. #6

    Default

    The FMLE statistics tab did not show anything during the upload.

    What is the recommendation? To drop frames OR degrade quality?
    If B, then what settings should I choose for buffer length?

    Thanks, Kel

    Quote Originally Posted by roger_l View Post
    Hi,

    Also check to see if the encoder is buffering the video or dropping frames. It may be buffering a few seconds every so often and when you stop the encoder at the end of the event, it hasn't sent it all to Wowza. There is a setting in fmle to either drop frames or reduce quality if it is going to buffer more than a certain amount so that it doesn't get too far behind. If it drops frames then these don't get sent so don't get recorded. The will probably get recorded locally though.

    You can see what fmle is doing from the log tab and then the statistics tab on the right.

    Roger.

  7. #7

    Default

    Hi,

    If you are recording the stream then you want to turn off auto adjust all together. What should happen then if there is not enough bandwidth is that the encoder will push the stream up as quick as it can. If the bandwidth improves then it should recover. If you do select auto adjust then you should use degrade quality option with a long buffer time and an acceptable bandwidth limit. Drop frames will result in a shortened video if it is too bad.

    Roger.

  8. #8

    Default

    Ok, makes sense.
    I have always had Auto Adjust turned off (FMLE has it that way by default)

    So I'm running a test now.
    Not showing any drops yet, but a buffer of 48 seconds (and the number is getting higher)

  9. #9

    Default

    UPDATE:

    1 hour and 18 minutes in, and I have 12 minutes of buffering at this point in time.
    No dropped frames, but definitely buffering.

    Any suggestions?

    Thanks In Advance

    Quote Originally Posted by coskel22 View Post
    Ok, makes sense.
    I have always had Auto Adjust turned off (FMLE has it that way by default)

    So I'm running a test now.
    Not showing any drops yet, but a buffer of 48 seconds (and the number is getting higher)

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