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Wave streaming is cut while played in WMP RRS feed

  • Question

  • Hi,

    We're using WMPLib as an embedded player in our C# application but this issue occurs also in Windows Media Player.

    Our server streams audio and has streaming with offset enabled. Given URL:
    http://ourserver.com/playback?id=400 which returns an octet or x-wave stream (both does not work).

    The WMP starts buffering and playing the 2 mins long wave file from given URL (everything works fine) but when I grab and drop the track slider to something about 90% of its length, the playback is cut off and WMP displays general audio error (c00d11b1). When I drop the slider closer (10-20% further) the playback continues without any errors and is played with offset properly. I'm using Windows 7 Home Premium 64 bit.

    When I'm using the same URL in other media player applications (VLC), no error occurs.

    What causes such issue?

    TCP packets from this situation:

    WMP->Server = get the wave

    GET http://ourserver.com/playback?id=400
    Cache-Control: no-cache
    Connection: Keep-Alive
    Pragma: getIfoFileURI.dlna.org
    Accept: */*
    Cookie: PHPSESSID=7e5156ec44280a9210570158c5d31475
    User-Agent: NSPlayer/12.00.7601.17514 WMFSDK/12.00.7601.17514
    GetContentFeatures.DLNA.ORG: 1
    Host: 192.168.0.5

    Server->WMP - return file

    HTTP/1.1 200 OK
    X-Powered-By: PHP/5.3.6
    Expires: Thu, 19 Nov 1981 08:52:00 GMT
    Cache-Control: no-cache
    Pragma: no-cache
    Content-Description: File Transfer
    Content-Type: application/octet-stream
    Content-Transfer-Encoding: binary
    Content-Dis; filename="sound.wav"
    Content-Length: 833658
    Accept-Ranges: bytes
    Date: Tue, 02 Apr 2013 10:46:01 GMT
    Server: lighttpd/1.4.28

    The sound is played, we move the slider...

    WMP->Server - get the sound with offset (set in range)

    GET http://ourserver.com/playback?id=400
    Cache-Control: no-cache
    Connection: Keep-Alive
    Pragma: getIfoFileURI.dlna.org
    Accept: */*
    Cookie: PHPSESSID=7e5156ec44280a9210570158c5d31475
    Range: bytes=733184-833657
    User-Agent: NSPlayer/12.00.7601.17514 WMFSDK/12.00.7601.17514
    GetContentFeatures.DLNA.ORG: 1
    Host: 192.168.0.5

    Server->WMP - returns sound 

    HTTP/1.1 206 Partial Content
    X-Powered-By: PHP/5.3.6
    Expires: Thu, 19 Nov 1981 08:52:00 GMT
    Content-Range: bytes 733184-833657/
    Cache-Control: no-cache
    Pragma: no-cache
    Content-Description: File Transfer
    Content-Type: application/octet-stream
    Content-Transfer-Encoding: binary
    Content-Dis; filename="sound.wav"
    Content-Length: 833658
    Accept-Ranges: bytes
    Date: Tue, 02 Apr 2013 10:46:10 GMT
    Server: lighttpd/1.4.28

    The stream continues but WMP cuts off playback and shows error.

    How can we fix this?

    Thanks for any help.



    Tuesday, April 2, 2013 9:28 AM

All replies

  • Hi!

    I think that, actually, your "Content-Length" header should represent the size of the range to be transmitted. Meaning: 733184 - 833658 = 100474.

    Hope it helps!

    Friday, March 28, 2014 5:03 PM