segmentation fault while editing

Which version of FFmpeg do you use ?

ffmpeg version 0.8.7-6:0.8.7-1ubuntu2, Copyright (c) 2000-2013 the Libav developers
  built on Oct 11 2013 08:39:40 with gcc 4.8.1

OpenShot version 1.4.3

You should use FFmpeg and not his fork !
Follow this thread how to make taht :
http://openshotusers.com/forum/viewtopic.php?f=12&t=1261

2013/11/4 maxroby <email address hidden>

> ffmpeg version 0.8.7-6:0.8.7-1ubuntu2, Copyright (c) 2000-2013 the Libav
> developers
> built on Oct 11 2013 08:39:40 with gcc 4.8.1
>
> OpenShot version 1.4.3
>
> --
> You received this bug notification because you are a member of OpenShot
> Developers, which is subscribed to openshot in Ubuntu.
> https://bugs.launchpad.net/bugs/1236847
>
> Title:
> segmentation fault while editing
>
> Status in “openshot” package in Ubuntu:
> New
>
> Bug description:
> While editing, screen fades and then app exits, from console:
> Errore di segmentazione (core dump creato)
>
> Description: Ubuntu 13.04
> Release: 13.04
>
> openshot:
> Installato: 1.4.3-1
> Candidato: 1.4.3-1
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/openshot/+bug/1236847/+subscriptions
>
> _______________________________________________
> Mailing list: https://launchpad.net/~openshot.developers
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Same problem with:
ffmpeg version 0.10.9-7:0.10.9-1~saucy1 Copyright (c) 2000-2013 the FFmpeg developers
installed from jon-severinsson ppa