OpenShot crashes (no particular action)

[Leo Crawford]

Occasionally I get..

on_tlbPlay_clicked called with self.GtkToolButton
python: /build/buildd/libav-0.8.9/libavutil/mathematics.c:80: av_rescale_rnd: Assertion `b >=0' failed.

I'm running ubuntu 13.10 on 64 bit AMD. OpenShot 1.4.3, from PPA

ffmpeg version 0.8.9-6:0.8.9-0ubuntu0.13.10.1, Copyright (c) 2000-2013 the Libav developers
  built on Nov 9 2013 19:09:46 with gcc 4.8.1

melt 0.8.8

[Olivier Girard (eolinwen)]

It seems to be a problem between MLT (i.e melt) and Libav.
You should use/try FFmpeg. For that, follow this FAQ 's:
http://openshotusers.com/forum/viewtopic.php?f=12&t=1261
https://answers.launchpad.net/openshot/+faq/1040
Normally, your issue should be resolved.