openshot.bugs team mailing list archive

[dg1727 <1654570@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

 - Architecture is x86_64 
 - OS is Xubuntu 13.04 (yes, I know Ubuntu no longer support this version, but https://github.com/probonopd/AppImageKit/blob/master/README.md says "Use an old system for building (at least 2-3 years old)" :-)
 - Installation method is AppImage 
 - Version of OpenShot is 2.2.0 
 - The video plays & seeks fine in both "ffplay" and "melt".  
 - melt 0.8.8 
 - "ffplay -version" reports "avplay version 0.8.9-6:0.8.9-0ubuntu0.13.04.1" 
 - Drag-n-drop video from Project Files windowpane to track display, right-click video in the track display, choose Display > Show Waveform.  
 - The full video is a 1080p 24fps MP4, about 581 MB and 38 minutes long.  The Show Waveform process on this video takes prohibitively long (several minutes or it locks up forever, I suspect it's the latter).  
 - If I slice the video into pieces as big as 200 MB, the Show Waveform process takes a more reasonable length of time.  
 - I'm using the following command line to split the video:  

MP4Box -splits 200000 video.mp4

 - "MP4Box -version" reports 0.5.1-DEV-rev4065
 - The largest split size that MP4Box will honour on this video is 569000.  At this split size, OpenShot still appears to take forever to draw the waveform.  
 - OpenShot CPU usage is at 100% of one core.  The old-school X wristwatch busy-pointer is shown, and the UI still responds (e.g., opening the Preferences window), but slowly.  Exiting OpenShot leaves /bin/bash .bin//openshot-qt.wrapper running @ 100% CPU time (one core).  
 - Pitivi old version 0.15.2 takes only seconds to show the waveform of the full 38-minute video.  

Due to the size of the video, I haven't attached it to this bug report.
If you'd like me to get the full video to you some other way, please
tell me.

Many thanks.

** Affects: openshot
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1654570

Title:
  Particular 1080p video very slow to show audio waveform

Status in OpenShot Video Editor:
  New

Bug description:
   - Architecture is x86_64 
   - OS is Xubuntu 13.04 (yes, I know Ubuntu no longer support this version, but https://github.com/probonopd/AppImageKit/blob/master/README.md says "Use an old system for building (at least 2-3 years old)" :-)
   - Installation method is AppImage 
   - Version of OpenShot is 2.2.0 
   - The video plays & seeks fine in both "ffplay" and "melt".  
   - melt 0.8.8 
   - "ffplay -version" reports "avplay version 0.8.9-6:0.8.9-0ubuntu0.13.04.1" 
   - Drag-n-drop video from Project Files windowpane to track display, right-click video in the track display, choose Display > Show Waveform.  
   - The full video is a 1080p 24fps MP4, about 581 MB and 38 minutes long.  The Show Waveform process on this video takes prohibitively long (several minutes or it locks up forever, I suspect it's the latter).  
   - If I slice the video into pieces as big as 200 MB, the Show Waveform process takes a more reasonable length of time.  
   - I'm using the following command line to split the video:  

  MP4Box -splits 200000 video.mp4

   - "MP4Box -version" reports 0.5.1-DEV-rev4065
   - The largest split size that MP4Box will honour on this video is 569000.  At this split size, OpenShot still appears to take forever to draw the waveform.  
   - OpenShot CPU usage is at 100% of one core.  The old-school X wristwatch busy-pointer is shown, and the UI still responds (e.g., opening the Preferences window), but slowly.  Exiting OpenShot leaves /bin/bash .bin//openshot-qt.wrapper running @ 100% CPU time (one core).  
   - Pitivi old version 0.15.2 takes only seconds to show the waveform of the full 38-minute video.  

  Due to the size of the video, I haven't attached it to this bug
  report.  If you'd like me to get the full video to you some other way,
  please tell me.

  Many thanks.

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