Opened 10 years ago

Closed 9 years ago

#4829 closed bug (fixed)

MPEG4 AAC mono files play audio at 2x speed

Reported by: PieterPanman Owned by: dlmcpaul
Priority: normal Milestone: R1
Component: Audio & Video/Codecs Version: R1/Development
Keywords: Cc:
Blocked By: Blocking:
Has a Patch: no Platform: All


I have a MPEG4 AAC video taken with my nokia phone (e61i). Video plays ok, but audio plays at 2x speed and ends somewhere halfway. Possibly due to mono channel audio? File is here:

Change History (2)

comment:1 by anevilyak, 10 years ago

Owner: changed from nobody to dlmcpaul

comment:2 by dlmcpaul, 9 years ago

Resolution: fixed
Status: newclosed

Ok, on this file the mp4 container metadata has Channel Count of 1 but the aac audio metadata has a Channel Count of 2.

I now override the mp4 metadata if I can parse the audio metadata and this plays the sound correctly.

However, the problem really is with the file creator app not correctly setting the Channel Count value.

Should be fixed in hrev37165

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