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    Message #07581
  
 [Bug 1096484] Re: Crash exporting WEBM with one	audio channel
  
Hi,
Just a thought : not sure that WebM  use one channel.
Another thing more concrete : you seem to use an old (and knew as a
buggy version) of MLT. Could you update it following this FAQ :
https://answers.launchpad.net/openshot/+faq/1861
If you want the last version of MLT, you should use this PPA : https://launchpad.net/~sunab/+archive/kdenlive-svn
but be careful, it is a daily PPA so he can break your installation.
After that, try again.
Thxs.
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You received this bug notification because you are a member of UBUNTU -
AL - BR, which is subscribed to OpenShot Video Editor.
https://bugs.launchpad.net/bugs/1096484
Title:
  Crash exporting WEBM with one audio channel
Status in OpenShot Video Editor:
  New
Bug description:
  Ubuntu 12.04.1 LTS
  OpenShot 1.4.3 installed by PPA
  Melt 0.7.6+git20120
  Principal input clip is an Ogg Theora file about which avprobe says
  that it is 1120x736 with one audio channel: Vorbus, 22050 Hz, mono,
  s16.
  I want to export with the same audio characteristics.
  Export settings:
  Target: WEBM (vpx)
  Video Profile: 1120x736 (aspect ratio 4:3, frame rate 15, pixel ratio 1:1, progressive)
  Quality: Med
  Advanced -- audio settings: 
   sample rate 22050
    # of channels 1
    bit rate 128 kb/s
  Soon after export begins, OpenShot crashes with these messages (some
  might have been from before the export started):
  on_frmMain_key_press_event
  on_mnuAbout_activate called with self.GtkImageMenuItem
  on_aboutdialog1_close called with self.OpenShot
  on_tlbMakeMovie_clicked called with self.GtkToolButton
  on_cboExportType_changed
  on_cboUploadServices_changed
  on_cboProjectType_changed
  on_cboExportTo_changed
  on_btnExportVideo_clicked
  NEW SDL CONSUMER
  [theora @ 0x27ad2c0] 7 bits left in packet 82
  [theora @ 0x47b5680] 7 bits left in packet 82
  [theora @ 0x319ba00] 7 bits left in packet 82
  [libvorbis @ 0x7f2d7045de20] oggvorbis_encode_init: init_encoder failed
  consumer_avformat.c: Unable to encode audio - disabling audio output.
  [webm @ 0x7f2d70000a40] Extradata corrupt.
  Floating point exception (core dumped)
  * * *
  If I change # of channels to 2, and otherwise the same as above, it
  exports with no problem.
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References