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

New Issue

Matt Robineau · 2015-10-12T06:56:49+02:00

Matt Robineau commented

2015-10-12 06:56:49 +02:00

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.

**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)

Matt Robineau commented

2015-10-12 06:56:49 +02:00

Changed status to: 'Open'

Matt Robineau commented

2015-10-12 06:56:49 +02:00

Added subscriber: @baremutation

Matt Robineau commented

2015-10-12 06:58:48 +02:00

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

Campbell Barton commented

2015-10-12 07:01:08 +02:00

Added subscriber: @ideasman42

Campbell Barton commented

2015-10-12 07:02:05 +02:00

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

Carlo Andreacchio commented

2015-10-12 07:55:31 +02:00

Added subscriber: @candreacchio

Carlo Andreacchio commented

2015-10-12 07:55:31 +02:00

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)

Dealga McArdle commented

2015-10-14 22:31:26 +02:00

Added subscriber: @tetha.z

Sergey Sharybin commented

2015-10-15 18:53:16 +02:00

Changed status from 'Open' to: 'Archived'

Sergey Sharybin closed this issue

2015-10-15 18:53:16 +02:00

Sergey Sharybin commented

2015-10-15 18:53:16 +02:00

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

Matthew Laukala commented

2019-08-10 02:19:42 +02:00

Added subscriber: @Matlauk