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[Martin G Miller <mgmiller@xxxxxxxxxxxxx>]

I have updated to version 0.9.52 and it is now almost unusable.  The
sound especially stutters constantly if there are any effects enabled on
a clip and the playback slows down during effects in a clip.  Even the
sound slows down.  Also, just having it play through a short video
sequence 3 times crashes the application.  In top, my cpu use is
150-175%.  I have a triple core cpu and it is engaging at least 2 of
them to a very large degree even when just idling.  If I disable CPU
throttling so all 3 are running at full speed, the sound stuttering and
slow playback are still there.  The crashing has gotten worse.

-- 
crash on playback during project creation
https://bugs.launchpad.net/bugs/425457
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Status in OpenShot Video Editor: Confirmed

Bug description:
32 bit Ubuntu 9.04 version.  I installed all dependencies without errors and the application itself installed without any errors.  All were installed from the .deb's.  Open shot version 0.9.22

The terminal shows the following error on startup:
/usr/local/share/openshot/main/windows/SimpleGladeApp.py:338: GtkWarning: gtk_toolbar_set_icon_size: assertion `icon_size != GTK_ICON_SIZE_INVALID' failed
  return gtk.glade.XML(self.glade_path, root, domain)
Fontconfig error: "~/.fonts.conf", line 1: XML or text declaration not at start of entity


I created a short video using a total of 7 tracks with mixed video, audio and stills.  I added animation to all the stills and put transitions between them.  There were also transitions between all the video clips.  The videos are .avi, the audio is .mp3 and the stills are .jpg. 

With the project in this state. I pressed the play button to preview the project.  It played smoothly till it reached the first transition from video to .jpg which combined a transition with the zoom in 100 to 150% animation.  The music sound track started to break up during the transitions, but cleared once the first still was finished.  Upon reaching the 3rd or 4th still, the program just quit unexpectedly.  The terminal also shut down at the same time, so no error messages could be seen.

The first project I created did not have the stills or animations and that one went very well.  This is the most stable and easiest to use video editor I have used in Linux so far.  Very impressive.  It took a lot of simultaneous things to get it to crash.  At this point I think it's almost as stable as Windows movie maker 2 in Windows XP.  I used to save constantly in that just in case it crashed, which it did regularly.  But it was quite usable, nevertheless.  I am hoping to see the same level of usability here.  This project has the potential to become the default video editor in Ubuntu.

I also have 2 feature requests which I will submit separately.