Audio decoding fails on some video container formats #41065
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Reference: blender/blender#41065
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System Information
Windows 7 X64, AMD Radeon HD 5800
Blender Version
Broken: Blender 2.71 (Hash
9337574
)Worked: Blender 2.70 (Hash
19e627c
)Short description of error
Audio in some video container formats is not properly decoded, resulting in silence during editing (and also rendering) when using the video sequence editor. The failure pertains to MP4 files in my testing; the audio codec is reported by gspot as "mp4a: MPEG-4 AAC LC".
Other container formats do work; wmv is properly decoded, for example.
My test video was encoded by Lumia 1020 video camera app.
Exact steps for others to reproduce the error
Import a MP4 file as a pair of strips (audio and video) to the video sequence editor, and observe silence. Rendered audio is also silent.
Changed status to: 'Open'
Added subscriber: @nik02
Added subscriber: @Sergey
Please always attach files needed to reproduce the issue.
Since the forum doesn't apparently let me upload the example video (page throws exception), here is the link:
Test file
Thanks, will have a closer look when finish fixing current bugs in my queue.
This is a bug in FFmpeg-2.1.4, fixed in 2.1.5. We'll need update FFmpeg used by blender in order to fix this. It'll take some time for platform maintainers.
Ok. 2.70 will work fine until then.
Changed status from 'Open' to: 'Resolved'
We've updated FFmpeg for all platforms now. Please try using recent builds from builder.blender.org.
Audio decoding works now on build with hash
2366043
(Win/64 bit).