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[Ronny Schmatzler <schmatzler@xxxxxxxxxxxxxxx>]

Same problem here. I'm on Slackware64 and I get this output in dmesg:

[39892.938714] openshot[18175]: segfault at 41 ip 00007faf74b30584 sp 00007fff83add9a0 error 4 in libpthread-2.20.so[7faf74b26000+17000]
[39946.562353] openshot[18254]: segfault at 41 ip 00007f1daf223584 sp 00007fffcc70b230 error 4 in libpthread-2.20.so[7f1daf219000+17000]
[39964.858169] openshot[18308]: segfault at 41 ip 00007f4202df6584 sp 00007fff11226900 error 4 in libpthread-2.20.so[7f4202dec000+17000]
[40142.957590] openshot[18603]: segfault at c ip 00007fc97ecf70c4 sp 00007fc95e41aae0 error 4 in libavformat.so.56.4.101[7fc97ebd1000+187000]

It only happens after extensive cutting. I import a video, cut it a few
times with the cutting tool and then click into the timeline - instant
crash.

mlt is 0.9.2, ffmpeg is 2.4.3

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Bugs, which is subscribed to OpenShot Video Editor.
https://bugs.launchpad.net/bugs/1405615

Title:
  crashes memory corruption segmentation fault

Status in OpenShot Video Editor:
  New

Bug description:
  Ubuntu 14.04.1, 64 Bit, Openshot Version: 1.4.3, Installed using apt-get, Operating System and Librarys are fully Up to Date.
  Openshot Crashes alot:  Over a Period of 2 Minutes it crashed like 4 Times and like 25 Times since i started using it.
  The Bug is Probably due to Memory Corruption and could in my opinion be caused of an issue with a buffer.
  The Bug is triggered when clicking on the Timeline to go back and forth. The Video iam editing is about 2h long.

  This is what Openshot report when the Crash happens when starting from
  the Command Line:

  on_frmMain_key_press_event
  on_tlbPlay_clicked called with self.GtkWindow
  on_frmMain_key_press_event
  on_tlbPlay_clicked called with self.GtkWindow
  on_frmMain_key_press_event
  on_tlbPlay_clicked called with self.GtkWindow
  on_frmMain_key_press_event
  on_tlbPlay_clicked called with self.GtkWindow
  on_tlbArrow_clicked called with self.GtkRadioToolButton
  on_tlbResize_toggled called with self.GtkRadioToolButton
  on_tlbResize_toggled called with self.GtkRadioToolButton
  on_tlbRazor_clicked called with self.GtkRadioToolButton
  project state modified
  state saved
  project state modified
  state saved
  on_mnuRemoveClip_activate clicked
  project state modified
  state saved
  Segmentation fault

  This is What Dmesg reports:

  openshot[6595]: segfault at 0 ip 00007fbe8b2b76c0 sp 00007fbe635737f0
  error 4 in libavformat.so.54.20.4[7fbe8b1ea000+10e000]

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