openshot.bugs team mailing list archive

[David Ing <divirtual@xxxxxxxxxxxxxx>]

Public bug reported:

I've been editing a source file from an Xacti HD-1010 720p 29.97, that
conforms with MPEG-4 AVC/H.264 and MPEG-4 audio (AAC compression).  I
had exported a file using the HD 720p 29.97 fps profile, which seemed to
play fine.  When I used Handbrake to downsample the video further, I
noticed pumping noises in the audio.

Looking at the Openshot profile for HD 720p 29.97 fps, I notice that the
default audio codec is ac3.  My reading at
http://www.networkedmediatank.com/showthread.php?tid=12602#pid106960
says that "The official mp4 standards does not include AC3 as an
intended audio stream in the mp4 container. You are creating a non
standard file when you include 5.1 AC3 in an mp4 container".

I have changed the setting for the audio codec to be aac, manually.  You
might save some effort for future people by correcting this profile.
Thanks.


Xubuntu 12.04, Openshot 1.4.0-1ubuntu1, libmlt 0.7.6+git20120204-2

** Affects: openshot
     Importance: Undecided
         Status: New


** Tags: aac ac3 h264

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Bugs, which is subscribed to OpenShot Video Editor.
https://bugs.launchpad.net/bugs/1032780

Title:
  Export h264 profile specifies ac3 instead of aac

Status in OpenShot Video Editor:
  New

Bug description:
  I've been editing a source file from an Xacti HD-1010 720p 29.97, that
  conforms with MPEG-4 AVC/H.264 and MPEG-4 audio (AAC compression).  I
  had exported a file using the HD 720p 29.97 fps profile, which seemed
  to play fine.  When I used Handbrake to downsample the video further,
  I noticed pumping noises in the audio.

  Looking at the Openshot profile for HD 720p 29.97 fps, I notice that
  the default audio codec is ac3.  My reading at
  http://www.networkedmediatank.com/showthread.php?tid=12602#pid106960
  says that "The official mp4 standards does not include AC3 as an
  intended audio stream in the mp4 container. You are creating a non
  standard file when you include 5.1 AC3 in an mp4 container".

  I have changed the setting for the audio codec to be aac, manually.
  You might save some effort for future people by correcting this
  profile.  Thanks.

  
  Xubuntu 12.04, Openshot 1.4.0-1ubuntu1, libmlt 0.7.6+git20120204-2

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