[gst-devel] Using mkv (mjpeg) files with gnlcomposition/gnlfilesource

Wes Miller wmiller at sdr.com
Thu Jul 1 20:42:50 CEST 2010

Is it possible to use a matroskamux-ed mjpeg file in a gnlfilesource?  I get
errors when I try it.




     gst-launch gnlcomposition \
       { \
          gnlfilesource name="s1" location="/home/wmiller/2.mkv" \
          start=0 duration=5000000000 media-start=0
media-duration=5000000000 \
       } \
           ! queue2 ! matroskademux ! image/jpeg ! jpegdec !
ffmpegcolorspace ! videorate ! autovideosink


     ERROR: from element /GstPipeline:pipeline0/GnlFileSource:s1: Could not
perform seek on resource.
     Additional debug info:
     gnlsource.c(332): ghost_seek_pad ():
     Sending initial seek to upstream element failed
     ERROR: pipeline doesn't want to preroll.
     Setting pipeline to NULL ...

     (gst-launch-0.10:5569): GStreamer-CRITICAL **:
gst_pad_set_blocked_async_full: assertion 
    `GST_IS_PAD (pad)' failed

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