Blender VSE does not import all audio tracks on mp4. #46449

Closed
opened 2015-10-12 06:56:49 +02:00 by Matt Robineau · 12 comments

System Information
Windows 10
Nvidea 970

Blender Version
Broken: 2.75a c27589e

Short description of error

Created a new mp4 which has 1 video track and 2 audio tracks. Only 1 video and 1 audio track added to Blender. Did not import second audio track.
Blender imported the first video track each time, it does not randomly select one of the two.

I have been able to listen to both track 1 and 2 (one at a time/separately) during VLC playback of the OBS-MP recorded mp4.

Exact steps for others to reproduce the error

  • Create mp4 with 2 audio tracks (I used OBS-MP)
  • Drag and drop into blender VSE timeline

Screenshots of Blender time line with imported video and video information from VLC below.

Blender VSE does not import all audio tracks on mp4 - Blender tracks.PNG
Blender VSE does not import all audio tracks on mp4 - Video Information File.PNG

**System Information** Windows 10 Nvidea 970 **Blender Version** Broken: 2.75a c27589e **Short description of error** Created a new mp4 which has 1 video track and 2 audio tracks. Only 1 video and 1 audio track added to Blender. Did not import second audio track. Blender imported the first video track each time, it does not randomly select one of the two. I have been able to listen to both track 1 and 2 (one at a time/separately) during VLC playback of the OBS-MP recorded mp4. **Exact steps for others to reproduce the error** - Create mp4 with 2 audio tracks (I used OBS-MP) - Drag and drop into blender VSE timeline Screenshots of Blender time line with imported video and video information from VLC below. ![Blender VSE does not import all audio tracks on mp4 - Blender tracks.PNG](https://archive.blender.org/developer/F244347/Blender_VSE_does_not_import_all_audio_tracks_on_mp4_-_Blender_tracks.PNG) ![Blender VSE does not import all audio tracks on mp4 - Video Information File.PNG](https://archive.blender.org/developer/F244349/Blender_VSE_does_not_import_all_audio_tracks_on_mp4_-_Video_Information_File.PNG)
Author

Changed status to: 'Open'

Changed status to: 'Open'
Author

Added subscriber: @baremutation

Added subscriber: @baremutation
Author

Used incorrect project while creating report, cannot edit with correct project. Should be Video Sequencer instead of BF Blender

Used incorrect project while creating report, cannot edit with correct project. Should be Video Sequencer instead of BF Blender
Sergey Sharybin was assigned by Campbell Barton 2015-10-12 07:01:08 +02:00

Added subscriber: @ideasman42

Added subscriber: @ideasman42

Please include a (small) MP4 file that has this problem.

Please include a (small) MP4 file that has this problem.

Added subscriber: @candreacchio

Added subscriber: @candreacchio

Test MP4 created, two streams visible in VLC, one stream only for VSE

tmp.mp4

Test MP4 created, two streams visible in VLC, one stream only for VSE [tmp.mp4](https://archive.blender.org/developer/F244355/tmp.mp4)
Member

Added subscriber: @tetha.z

Added subscriber: @tetha.z

Changed status from 'Open' to: 'Archived'

Changed status from 'Open' to: 'Archived'

This isn't really a bug, just the code is not ready to support multiple audio tracks currently and being hardcoded to sue first audio track only.

So thanks for the report, but moving it to TODO now: http://wiki.blender.org/index.php/Dev:2.5/Source/Development/Todo/Editors#Video_Sequencer

This isn't really a bug, just the code is not ready to support multiple audio tracks currently and being hardcoded to sue first audio track only. So thanks for the report, but moving it to TODO now: http://wiki.blender.org/index.php/Dev:2.5/Source/Development/Todo/Editors#Video_Sequencer

Added subscriber: @Matlauk

Added subscriber: @Matlauk

Has this been addressed at all?

Has this been addressed at all?
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Reference: blender/blender#46449
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