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[Andy Finch <830811@xxxxxxxxxxxxxxxxxx>]

The problem here is that you were using libmp3lame as the audio codec -
WebM only supports libvorbis for audio. By using an unsupported codec,
ffmpeg has crashed, which in turn crashed Openshot. We are not able to
catch any crashes in ffmpeg/MLT before they crash Openshot, so I have
added some validation to force the correct codecs for WebM i case they
are changed by the user.

The best option is to use the WebM profile under All Formats in the
Simple export tab.

** Changed in: openshot
       Status: New => Fix Committed

** Changed in: openshot
    Milestone: None => 1.4.1

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https://bugs.launchpad.net/bugs/830811

Title:
  Export Video crashes for WebM

Status in OpenShot Video Editor:
  Fix Committed

Bug description:
  This is regarding OpenShot v1.3.0 under Ubuntu 11.04, installed from
  Ubuntu repository, as well as FFmpeg v0.6.2.

  I have a project and I started to export video with the following settings: 
  Profile: Square NTSC Widescreen (854x480, 30p)
  Video: format - webm, codec - libvpx, bit Rate - 15 Mb/s
  Audio: codec - libmp3lame, sample rate - 44100, channels - 2, bit rate 192 kb/s

  OpenShot crashes immediately at the beginning of encoding with
  'Floating point exception'.

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