[gstreamer-bugs] [Bug 532393] New: High CPU when playing a .DV video file

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | don't know | Ver: HEAD CVS
           Summary: High CPU when playing a .DV video file
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: Normal
         Component: don't know
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: Jonathan.Oomph at gmail.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: 2.23/2.24
   GNOME milestone: Unspecified


I noticed that the gstreamer framework seems to take all my CPU when trying to
view a 32 MB DV file (which I captured from my mini-dv camcorder).  The video
gets real choppy after about 1 second of playback, and then the audio cuts out
(probably related to the high CPU usage).  I am using Python to load the DV
file and play it.  My computer is a Pentium 4 with a 1.8 GHz CPU and 1 Gig of
Ram.  I also get the same exact performance using the default Movie Player in
Ubuntu 8.04 (which I'm assuming uses gstreamer also). 

Any suggestions or tips for making the video playback smoothly?  If this is a
problem with gstreamer, any talks of improving the performance?  Just as a
reference, I used Kino to play the file, and it plays the file very smoothly. 
Also, if I boot into Windows (same computer) and play the .DV file with Windows
Media Player, it plays silky smooth.

Just a little more background:  I am attempting to put together a prototype of
a non-linear video editor using the gstreamer framework.  The .DV file format
is a very important format for home / consumer-level video editing.  I'm
concerned that if the performance is no good on that format, then it will
impede the progress of all non-linear editors trying to use gstreamer.  

Thanks in advance!
-Jonathan


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