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[Olivier Girard <eolinwen@xxxxxxxxx>]

Update your version of MLT :
https://answers.launchpad.net/openshot/+faq/1861

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https://bugs.launchpad.net/bugs/1299306

Title:
  destruction of unsaved data with segment fault in mlt

Status in OpenShot Video Editor:
  New

Bug description:
  OpenShot will crash and destroy any unsaved data when changing the
  current position in the timeline, such as going forward, backward or
  attempting to scrub through the timeline when there has been a change
  in position of any clips that will reload them.

  Architecture : 64 bits
  Operating System & version: Ubuntu 12.04
  Installation Method : Custom PPA from http://ppa.launchpad.net/openshot.developers/ppa/ubuntu precise main
  Version of Openshot installed : 1.4.3
  MLT/melt version: 0.7.7
  FFmpeg (i.e.libavcodec) version :53.35.0
  FFmpeg installation : /usr/bin/ffmpeg

  Here is output during and just before the crash:

  on_tlbNextMarker_clicked
  [mp3 @ 0x1acfa3c0] max_analyze_duration reached
  [mp3 @ 0x1584ea40] max_analyze_duration reached
  [mp3 @ 0xc7a25a0] max_analyze_duration reached
  [mp3 @ 0xc7a25a0] Estimating duration from bitrate, this may be inaccurate
  [mp3 @ 0xc7a6160] max_analyze_duration reached
  [mp3 @ 0xc7a6160] Estimating duration from bitrate, this may be inaccurate
  [ogg @ 0x18afa940] max_analyze_duration reached
  [ogg @ 0x11d7e920] max_analyze_duration reached
  [ogg @ 0x18afd5e0] max_analyze_duration reached
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x1434b6e0] max_analyze_duration reached
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x21f80d40] max_analyze_duration reached
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x21f87560] max_analyze_duration reached
  [ogg @ 0x160a75a0] max_analyze_duration reached
  [ogg @ 0x1433e8c0] max_analyze_duration reached
  [ogg @ 0x1061d3a0] max_analyze_duration reached
  [ogg @ 0x10621740] max_analyze_duration reached
  [matroska,webm @ 0xf4fb000] Estimating duration from bitrate, this may be inaccurate
  [matroska,webm @ 0xf524500] Estimating duration from bitrate, this may be inaccurate
  [matroska,webm @ 0xf526620] Estimating duration from bitrate, this may be inaccurate
  [matroska,webm @ 0xf527aa0] Estimating duration from bitrate, this may be inaccurate
  Segmentation fault

  I've been able to identify that this crash is happening in this route:

  self.project.RefreshXML() in MainGTK.py
  self.form.MyVideo.load_xml in project.py
  mlt.Producer in load_xml in video.py

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