I have compared log entries like the following to the samples I am feeding the pipeline: "dshowaudiodec : chain (size 768)=> pts 0:00:00.128000000 stop 0:00:00.320000000" This line is produced by the following statement (from gstdshowaudiodec.c): GST_CAT_DEBUG_OBJECT (dshowaudiodec_debug, adec, "chain (size %d)=> pts %"       GST_TIME_FORMAT " stop %" GST_TIME_FORMAT,       GST_BUFFER_SIZE (buffer), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),       GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer) +           GST_BUFFER_DURATION (buffer))); Those timestamps are matching from what I can tell and therefore look ok to me. It is possible that I am not setting all necessary data on the GstBuffer in the fakesrc. The following fields get set at the moment: <ul><li>GST_BUFFER_DATA </li><li>GST_BUFFER_SIZE </li><li>GST_BUFFER_TIMESTAMP</li><li>GST_BUFFER_DURATION</li><li>GST_BUFFER_FLAG_DISCONT (if present in source sample)</li><li>GST_BUFFER_FLAG_PREROLL (if present in source sample)</li> </ul> It is also worth mentioning that my fakesrc has the "is-live" property set to TRUE. Thanks, Andreas <div class="gmail_quote">On Tue, May 6, 2008 at 1:43 AM, Felipe Contreras <<a href="mailto:felipe.contreras@gmail.com">felipe.contreras@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><div></div><div class="Wj3C7c">On Tue, May 6, 2008 at 1:41 AM, Andreas Schuler <<a href="mailto:andreas@neokast.com">andreas@neokast.com</a>> wrote: > Hi all, > > I am having some trouble playing back Windows Media content. > > The setup is somewhat unique but necessary for my application: > > 2 fakesrc components, which are injecting encoded audio and video data > Sources are connected to capsfilters, on which I am setting the correct > input caps (see below) > Caps filters are connected to a multiqueue > Queue is connected to two decoding bins > Standard audio and video rendering tails (i.e. convert filters, rendering > sinks etc.) are connected to decoding bin source pads This setup actually > works fine for XVID/MP3 encoded content but I didn't have any luck getting > it to play with WM content. The caps I have for audio and video are as > follows: > > audio/x-wma, channels=(int)2, rate=(int)32000, wmaversion=(int)2, > bitrate=(int)32000, codec_data=(buffer)008800001f0000000000, > block_align=(int)768, depth=(int)16 >  video/x-wmv, width=(int)720, height=(int)496, framerate=(fraction)24/1, > wmvversion=(int)2, codec_data=(buffer)baf8ad00, format=(fourcc)WMV2 > > I have the same content in a regular WMV file, which is playing back fine > when using the playbin. I verified the caps with that setup (the only > difference appears to be the order of some of the fields and the video > framerate [the actual value is 23.97fps]): > > audio/x-wma, wmaversion=(int)2, bitrate=(int)32000, depth=(int)16, > rate=(int)32000, channels=(int)2, block_align=(int)768, > codec_data=(buffer)008800001f0000000000 > video/x-wmv, wmvversion=(int)2, framerate=(fraction)25/1, width=(int)720, > height=(int)496, codec_data=(buffer)baf8ad00, format=(fourcc)WMV2 > > > > When trying to play the content using the setup mention above I get a lot of > the following messages from gstsegment.c (702): > > CRITICAL **: file E:\devel-release\src_releases\gstreamer\gst\gstsegment.c: > line 702: assertion `segment->format == format' failed > > Enabling the debug output reveals the following from the dshow audio > decoder: > > dshowaudiodec : received new segment from 0:00:00.000000000 to > 99:99:99.999999999 > dshowaudiodec : chain (size 768)=> pts 0:00:00.000000000 stop > 0:00:00.192000000 >  dshowaudiodec : this buffer has a DISCONT flag (0:00:00.000000000), > flushing > dshowaudiodec : chain (size 768)=> pts 0:00:00.128000000 stop > 0:00:00.320000000 > dshowaudiodec : buffer is out of segment, start 0:00:00.128000000 stop > 0:00:00.256000000 >  dshowaudiodec : buffer is out of segment, start 0:00:00.256000000 stop > 0:00:00.320000000 > dshowaudiodec : chain (size 768)=> pts 0:00:00.320000000 stop > 0:00:00.512000000 > dshowaudiodec : buffer is out of segment, start 0:00:00.320000000 stop > 0:00:00.448000000 >  dshowaudiodec : buffer is out of segment, start 0:00:00.448000000 stop > 0:00:00.512000000 > dshowaudiodec : chain (size 768)=> pts 0:00:00.512000000 stop > 0:00:00.704000000 > dshowaudiodec : buffer is out of segment, start 0:00:00.512000000 stop > 0:00:00.640000000 >  dshowaudiodec : buffer is out of segment, start 0:00:00.640000000 stop > 0:00:00.704000000 > dshowaudiodec : chain (size 768)=> pts 0:00:00.704000000 stop > 0:00:00.896000000 > dshowaudiodec : buffer is out of segment, start 0:00:00.704000000 stop > 0:00:00.832000000 >  dshowaudiodec : buffer is out of segment, start 0:00:00.832000000 stop > 0:00:00.896000000 > > The video decoder is showing a similar picture: > > dshowvideodec : new segment received => start=0:00:00.000000000 > stop=99:99:99.999999999 >  dshowvideodec : chain (size 1749)=> pts 0:00:00.009000000 stop > 0:00:00.010000000 > dshowvideodec : this buffer has a DISCONT flag (0:00:00.009000000), flushing > dshowvideodec : buffer is out of segment, start 0:00:00.009000000 stop > 0:00:00.010000000 >  dshowvideodec : chain (size 2972)=> pts 0:00:02.411000000 stop > 0:00:02.412000000 > dshowvideodec : buffer is out of segment, start 0:00:02.411000000 stop > 0:00:02.412000000 > dshowvideodec : chain (size 3735)=> pts 0:00:02.445000000 stop > 0:00:02.446000000 >  dshowvideodec : buffer is out of segment, start 0:00:02.445000000 stop > 0:00:02.446000000 > dshowvideodec : chain (size 3500)=> pts 0:00:02.478000000 stop > 0:00:02.479000000 > dshowvideodec : buffer is out of segment, start 0:00:02.478000000 stop > 0:00:02.479000000 >  dshowvideodec : chain (size 5141)=> pts 0:00:02.545000000 stop > 0:00:02.546000000 > dshowvideodec : buffer is out of segment, start 0:00:02.545000000 stop > 0:00:02.546000000 > dshowvideodec : chain (size 7849)=> pts 0:00:02.578000000 stop > 0:00:02.579000000 >  dshowvideodec : buffer is out of segment, start 0:00:02.578000000 stop > 0:00:02.579000000 > dshowvideodec : chain (size 5101)=> pts 0:00:02.611000000 stop > 0:00:02.612000000 > dshowvideodec : buffer is out of segment, start 0:00:02.611000000 stop > 0:00:02.612000000 >  dshowvideodec : chain (size 7712)=> pts 0:00:02.645000000 stop > 0:00:02.646000000 > dshowvideodec : buffer is out of segment, start 0:00:02.645000000 stop > 0:00:02.646000000 > > > I understand that the problem appears to be that the "format" in GstSegment > is not of type GST_FORMAT_TIME when "gst_segment_clip" is called in > gstdshowaudiocodec.c. The question is why. Can anyone point me in the right > direction on this one? </div></div>What about the timestamps? Are those ok? -- Felipe Contreras </blockquote></div>