[gstreamer-bugs] [Bug 576074] New: after re-buffering, playbin2 playback of a youtube stream stalls

GStreamer (bugzilla.gnome.org) bugzilla-daemon at bugzilla.gnome.org
Fri Mar 20 05:30:26 PDT 2009 

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  http://bugzilla.gnome.org/show_bug.cgi?id=576074

  GStreamer | don't know | Ver: git
           Summary: after re-buffering, playbin2 playback of a youtube
                    stream stalls
           Product: GStreamer
           Version: git
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: major
          Priority: Normal
         Component: don't know
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: andreas.frisch at multimedia-labs.de
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


Please describe the problem:
i try playing youtube mpeg 4 streams using playbin2.
prebuffering counts up to 100% once during preroll, then playback starts and
while it's playing, some time during the first seconds, it starts rebuffering
and counting again. then it prints "Done buffering, setting pipeline to PLAYING
..." and at this point, sometimes the playback just stops.

Steps to reproduce:
gst-launch playbin2
uri="http://www.youtube.com/get_video?video_id=E_AhiIJzGbA&l=20&sk=AkrJIMSwvkty9zXfJUjyxDy5UT1K056oC&fmt_map=34%2F0%2F9%2F0%2F115%2C5%2F0%2F7%2F0%2F0&t=vjVQa1PpcFMWCoD1DyKRUrBPwwepMLOxz9qWmxxOs18%3D&hl=en&plid=AARlirnx7EAsGMse&cr=US&fmt=18"
-v

Actual results:
root at dm8000:~# gst-launch playbin2
uri="http://www.youtube.com/get_video?video_id=E_AhiIJzGbA&l=20&sk=AkrJIMSwvkty9zXfJUjyxDy5UT1K056oC&fmt_map=34%2F0%2F9%2F0%2F115%2C5%2F0%2F7%2F0%2F0&t=vjVQa1PpcFMWCoD1DyKRUrBPwwepMLOxz9qWmxxOs18%3D&hl=en&plid=AARlirnx7EAsGMse&cr=US&fmt=18"
-v
Setting pipeline to PAUSED ...                                                  
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0: connection-speed = 0      
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0: subtitle-encoding = NULL  
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0: uri =
"http://www.youtube.com/get_video?video_id=E_AhiIJzGbA&l=20&sk=AkrJIMSwvkty9zXfJUjyxDy5UT1K056oC&fmt_map=34%2F0%2F9%2F0%2F115%2C5%2F0%2F7%2F0%2F0&t=vjVQa1PpcFMWCoD1DyKRUrBPwwepMLOxz9qWmxxOs18%3D&hl=en&plid=AARlirnx7EAsGMse&cr=US&fmt=18" 
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0: buffer-duration = -1      
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0: buffer-size = -1          
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0: source = (GstNeonhttpSrc)
source                                                                
Pipeline is PREROLLING ...                                                      
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstTypeFindElement:typefindelement0.GstPad:src:
caps = audio/x-m4a                               
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstTypeFindElement:typefind:
force-caps = audio/x-m4a                  
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20:
sink-caps = audio/x-m4a                                               
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstTypeFindElement:typefind.GstPad:src:
caps = audio/x-m4a             
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstQueue2:queue20.GstPad:sink:
caps = audio/x-m4a                                                
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstQueue2:queue20.GstPad:src:
caps = audio/x-m4a                                                 
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstTypeFindElement:typefind.GstPad:sink:
caps = audio/x-m4a            
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20.GstGhostPad:sink:
caps = audio/x-m4a                                   
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20.GstGhostPad:sink:
caps = audio/x-m4a                                   
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20.GstGhostPad:sink.GstProxyPad:proxypad0:
caps = audio/x-m4a             
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstQTDemux:qtdemux0.GstPad:sink:
caps = audio/x-m4a                    
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstMultiQueue:multiqueue0:
max-size-buffers = 5                        
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstMultiQueue:multiqueue0:
max-size-time = 2000000000                  
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstMultiQueue:multiqueue0:
max-size-bytes = 2097152                    
/GstPlayBin2:playbin20/GstInputSelector:inputselector0.GstSelectorPad:sink0:
always-ok = FALSE                                                        
/GstPlayBin2:playbin20/GstInputSelector:inputselector1.GstSelectorPad:sink0:
always-ok = FALSE                                                        
WARNING: from element /GstPlayBin2:playbin20/GstPlaySink:playsink0: No volume
control found                                                           
Additional debug info:                                                          
gstplaysink.c(1224): gen_audio_chain ():
/GstPlayBin2:playbin20/GstPlaySink:playsink0:                                   
Volume/mute is not available                                                    
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstMultiQueue:multiqueue0.GstPad:sink0:
caps = audio/mpeg, mpegversion=(int)4, framed=(boolean)true,
codec_data=(buffer)1210, rate=(int)44100, channels=(int)2                       
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0.GstGhostPad:src1: caps =
audio/mpeg, mpegversion=(int)4, framed=(boolean)true, codec_data=(buffer)1210,
rate=(int)44100, channels=(int)2                                                
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20.GstDecodePad:src1:
caps = audio/mpeg, mpegversion=(int)4, framed=(boolean)true,
codec_data=(buffer)1210, rate=(int)44100, channels=(int)2                       
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstMultiQueue:multiqueue0.GstPad:src0:
caps = audio/mpeg, mpegversion=(int)4, framed=(boolean)true,
codec_data=(buffer)1210, rate=(int)44100, channels=(int)2                       
/GstPlayBin2:playbin20/GstInputSelector:inputselector1.GstSelectorPad:sink0:
caps = audio/mpeg, mpegversion=(int)4, framed=(boolean)true,
codec_data=(buffer)1210, rate=(int)44100, channels=(int)2                       
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0.GstGhostPad:src1: caps =
audio/mpeg, mpegversion=(int)4, framed=(boolean)true, codec_data=(buffer)1210,
rate=(int)44100, channels=(int)2                                                
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0.GstGhostPad:src1.GstProxyPad:proxypad5:
caps = audio/mpeg, mpegversion=(int)4, framed=(boolean)true,
codec_data=(buffer)1210, rate=(int)44100, channels=(int)2                       
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0.GstGhostPad:src1: caps =
audio/mpeg, mpegversion=(int)4, framed=(boolean)true, codec_data=(buffer)1210,
rate=(int)44100, channels=(int)2                                                
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20.GstDecodePad:src1:
caps = audio/mpeg, mpegversion=(int)4, framed=(boolean)true,
codec_data=(buffer)1210, rate=(int)44100, channels=(int)2                       
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20.GstDecodePad:src1.GstProxyPad:proxypad2:
caps = audio/mpeg, mpegversion=(int)4, framed=(boolean)true,
codec_data=(buffer)1210, rate=(int)44100, channels=(int)2                       
/GstPlayBin2:playbin20/GstInputSelector:inputselector1: active-pad =
(GstSelectorPad) sink0                                                          
/GstPlayBin2:playbin20/GstInputSelector:inputselector1.GstPad:src: caps =
audio/mpeg, mpegversion=(int)4, framed=(boolean)true, codec_data=(buffer)1210,
rate=(int)44100, channels=(int)2                                                
/GstPlayBin2:playbin20/GstPlaySink:playsink0/GstTee:audiotee.GstPad:src1: caps
= audio/mpeg, mpegversion=(int)4, framed=(boolean)true,
codec_data=(buffer)1210, rate=(int)44100, channels=(int)2                       
/GstPlayBin2:playbin20/GstPlaySink:playsink0/GstTee:audiotee.GstPad:sink: caps
= audio/mpeg, mpegversion=(int)4, framed=(boolean)true,
codec_data=(buffer)1210, rate=(int)44100, channels=(int)2                       
/GstPlayBin2:playbin20/GstPlaySink:playsink0/GstTee:audiotee.GstPad:src0: caps
= audio/mpeg, mpegversion=(int)4, framed=(boolean)true,
codec_data=(buffer)1210, rate=(int)44100, channels=(int)2                       
/GstPlayBin2:playbin20/GstPlaySink:playsink0/GstTee:audiotee.GstPad:src1: caps
= audio/mpeg, mpegversion=(int)4, framed=(boolean)true,
codec_data=(buffer)1210, rate=(int)44100, channels=(int)2                       
/GstPlayBin2:playbin20/GstPlaySink:playsink0/GstTee:audiotee.GstPad:sink: caps
= audio/mpeg, mpegversion=(int)4, framed=(boolean)true,
codec_data=(buffer)1210, rate=(int)44100, channels=(int)2                       
/GstPlayBin2:playbin20/GstPlaySink:playsink0.GstGhostPad:audio_sink: caps =
audio/mpeg, mpegversion=(int)4, framed=(boolean)true, codec_data=(buffer)1210,
rate=(int)44100, channels=(int)2                                                
/GstPlayBin2:playbin20/GstPlaySink:playsink0.GstGhostPad:audio_sink: caps =
audio/mpeg, mpegversion=(int)4, framed=(boolean)true, codec_data=(buffer)1210,
rate=(int)44100, channels=(int)2                                                
/GstPlayBin2:playbin20/GstPlaySink:playsink0.GstGhostPad:audio_sink.GstProxyPad:proxypad6:
caps = audio/mpeg, mpegversion=(int)4, framed=(boolean)true,
codec_data=(buffer)1210, rate=(int)44100, channels=(int)2                       
MIMETYPE audio/mpeg version 4 (AAC)                                             
/GstPlayBin2:playbin20/GstPlaySink:playsink0/GstBin:abin/GstDVBAudioSink:dvbaudiosink0.GstPad:sink:
caps = audio/mpeg, mpegversion=(int)4, framed=(boolean)true,
codec_data=(buffer)1210, rate=(int)44100, channels=(int)2                       
/GstPlayBin2:playbin20/GstPlaySink:playsink0/GstBin:abin.GstGhostPad:sink: caps
= audio/mpeg, mpegversion=(int)4, framed=(boolean)true,
codec_data=(buffer)1210, rate=(int)44100, channels=(int)2                       
/GstPlayBin2:playbin20/GstPlaySink:playsink0/GstBin:abin.GstGhostPad:sink: caps
= audio/mpeg, mpegversion=(int)4, framed=(boolean)true,
codec_data=(buffer)1210, rate=(int)44100, channels=(int)2                       
/GstPlayBin2:playbin20/GstPlaySink:playsink0/GstBin:abin.GstGhostPad:sink.GstProxyPad:proxypad9:
caps = audio/mpeg, mpegversion=(int)4, framed=(boolean)true,
codec_data=(buffer)1210, rate=(int)44100, channels=(int)2                       
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstMultiQueue:multiqueue0.GstPad:sink1:
caps = video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1                    
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0.GstGhostPad:src0: caps =
video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1                       
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20.GstDecodePad:src0:
caps = video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1                       
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstMultiQueue:multiqueue0.GstPad:src1:
caps = video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1                     
/GstPlayBin2:playbin20/GstInputSelector:inputselector0.GstSelectorPad:sink0:
caps = video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1                       
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0.GstGhostPad:src0: caps =
video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0.GstGhostPad:src0.GstProxyPad:proxypad4:
caps = video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0.GstGhostPad:src0: caps =
video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20.GstDecodePad:src0:
caps = video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1
/GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20.GstDecodePad:src0.GstProxyPad:proxypad3:
caps = video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1
/GstPlayBin2:playbin20/GstInputSelector:inputselector0: active-pad =
(GstSelectorPad) sink0
/GstPlayBin2:playbin20/GstInputSelector:inputselector0.GstPad:src: caps =
video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1
/GstPlayBin2:playbin20/GstPlaySink:playsink0/GstBin:vbin/GstQueue:vqueue.GstPad:sink:
caps = video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1
/GstPlayBin2:playbin20/GstPlaySink:playsink0/GstBin:vbin.GstGhostPad:sink: caps
= video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1
/GstPlayBin2:playbin20/GstPlaySink:playsink0.GstGhostPad:video_sink: caps =
video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1
/GstPlayBin2:playbin20/GstPlaySink:playsink0.GstGhostPad:video_sink: caps =
video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1
/GstPlayBin2:playbin20/GstPlaySink:playsink0.GstGhostPad:video_sink.GstProxyPad:proxypad7:
caps = video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1
/GstPlayBin2:playbin20/GstPlaySink:playsink0/GstBin:vbin.GstGhostPad:sink: caps
= video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1
/GstPlayBin2:playbin20/GstPlaySink:playsink0/GstBin:vbin.GstGhostPad:sink.GstProxyPad:proxypad8:
caps = video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1
/GstPlayBin2:playbin20/GstPlaySink:playsink0/GstBin:vbin/GstQueue:vqueue.GstPad:src:
caps = video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1
H264 have codec data..!
H264 baseline profile at 1.1
MIMETYPE video/x-h264 VIDEO_SET_STREAMTYPE, 1
/GstPlayBin2:playbin20/GstPlaySink:playsink0/GstBin:vbin/GstDVBVideoSink:dvbvideosink0.GstPad:sink:
caps = video/x-h264,
codec_data=(buffer)0142000bfde1000e6742000bbb40a0fd8080f08042a001000668ce02412c80,
width=(int)320, height=(int)240, framerate=(fraction)15/1
Prerolled, waiting for buffering to finish...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
Buffering, setting pipeline to PAUSED ...
Prerolled, waiting for buffering to finish...
Done buffering, setting pipeline to PLAYING ...

...video and audio playback stall...

Expected results:
play normally at all times

Does this happen every time?
error occurs in >half of the tries. interesting it that it NEVER stops
playback, when trying to create a debug log using
GST_DEBUG="*queue2*:5,*decodebin*:5,*playbin2*:5" gst-launch playbin2
uri="http://www.youtube.com/get_video?video_id=E_AhiIJzGbA&l=20&sk=AkrJIMSwvkty9zXfJUjyxDy5UT1K056oC&fmt_map=34%2F0%2F9%2F0%2F115%2C5%2F0%2F7%2F0%2F0&t=vjVQa1PpcFMWCoD1DyKRUrBPwwepMLOxz9qWmxxOs18%3D&hl=en&plid=AARlirnx7EAsGMse&cr=US&fmt=18"
>buffer_done_stall.log 2>&1

Other information:
working on dreambox 8000 architecture, like usually.
souphttpsrc is not an option due to dependencies


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