Audio missing in rendered Video file using pip bpy module 3.5 #109524

New Issue

alok · 2023-06-29T18:53:27+02:00

alok commented

2023-06-29 18:53:27 +02:00

System Information
Operating system: macOS Ventura13.1
Graphics card: Intel Iris Plus Graphics 645 1536 MB
Memory: 8 GB 2133 MHz LPDDR3

Blender Version
Used bpy 3.5 package published in PyPI
link: https://pypi.org/project/bpy/3.5.0/

Short description of error

The same blend file is giving correct output with audio if rendered using Blender 3.5.0 application locally but when I am trying it with the bpy 3.5 package audio is missing. Looked for doc/solutions but had no success. The post-processing tab's compositing and sequencer both are ticked in the blend file which I crossed checked as per most available answers.

STEPS

take a video blend file.
pip install bpy
I was trying to update the text value in the video that is not required for the issue so writing down only related code.

import bpy

bpy.ops.wm.open_mainfile(filepath=blend_file_path)
bpy.context.scene.render.filepath = location.mp4
bpy.data.scenes["Scene"].render.image_settings.file_format = 'FFMPEG'
bpy.ops.render.render(animation=animation, write_still=True)

Attached output files details as well. As we can see one file has no audio channel and codecs are also missing MPEG-4 AAC

Please help me out as I am stuck in this for longer and it's a bit important.
Thanks and regards
Alok

**System Information** Operating system: macOS Ventura13.1 Graphics card: Intel Iris Plus Graphics 645 1536 MB Memory: 8 GB 2133 MHz LPDDR3 **Blender Version** Used bpy 3.5 package published in PyPI link: https://pypi.org/project/bpy/3.5.0/ **Short description of error** The same blend file is giving correct output with audio if rendered using Blender 3.5.0 application locally but when I am trying it with the bpy 3.5 package audio is missing. Looked for doc/solutions but had no success. The post-processing tab's compositing and sequencer both are ticked in the blend file which I crossed checked as per most available answers. **STEPS** 1. take a video blend file. 2. pip install bpy 3. I was trying to update the text value in the video that is not required for the issue so writing down only related code. ```Py import bpy bpy.ops.wm.open_mainfile(filepath=blend_file_path) bpy.context.scene.render.filepath = location.mp4 bpy.data.scenes["Scene"].render.image_settings.file_format = 'FFMPEG' bpy.ops.render.render(animation=animation, write_still=True) ``` 4. Attached output files details as well. As we can see one file has no audio channel and codecs are also missing MPEG-4 AAC Please help me out as I am stuck in this for longer and it's a bit important. Thanks and regards Alok

Screenshot 2023-06-29 at 9.55.57 PM.png

42 KiB

Screenshot 2023-06-29 at 9.56.12 PM.png

44 KiB

👀 1

alok added the

labels 2023-06-29 18:53:28 +02:00

YimingWu commented

2023-06-30 05:17:15 +02:00

Could you give us the file that replicates the issue?

Default Output > Encoding > Audio is No Audio, you probably want to manually set that in your script as well. But since you said if rendered in blender it's okay, it looks kinda suspicious.

Could you also try calling blender executable with the script by using blender -b --python <filename> and see if audio works? If it works then it could be possibly the problem of the pip package.

Could you give us the file that replicates the issue? Default `Output > Encoding > Audio` is `No Audio`, you probably want to manually set that in your script as well. But since you said if rendered in blender it's okay, it looks kinda suspicious. Could you also try calling blender executable with the script by using `blender -b --python <filename>` and see if audio works? If it works then it could be possibly the problem of the pip package.

YimingWu added

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Audio missing in rendered Video file using pip bpy module 3.5 #109524