Audio out of sync

WesCole · Jan 22, 2011, 03:40 PM

I have an issue with some movies that I ripped using handbrake having the audio slightly out of sync with the video. Those movies play perfectly with VLC, but I don't know why they get out of sync when playing them from iTunes on my ATV2.

Anyone else have this problem or a solution?

Thanks,

Wes

Sedulous · Jan 22, 2011, 04:13 PM

I've not had the problem you described. However, I have the opposite: videos playback fine on ATV2, QTX, VLC, etc., but there is sync issue when playing on iPad. I did notice that if I scrub the video a little, the audio syncs again. I think it has something to do with 6 channel AAC.

WesCole · Jan 22, 2011, 04:29 PM

I might have to check the video files that are out of sync and see if they have 6 channel audio. Any advice on how to change it if they do?

Sedulous · Jan 24, 2011, 08:40 PM

A variety of ways exist. You could use MKVTools to add a 2 channel AAC track. This avoids re-encoding and should be easy to do.

Jan 22, 2011, 03:40 PM	#1
WesCole macrumors 6502a Join Date: Jul 2010 Location: Texas	Audio out of sync I have an issue with some movies that I ripped using handbrake having the audio slightly out of sync with the video. Those movies play perfectly with VLC, but I don't know why they get out of sync when playing them from iTunes on my ATV2. Anyone else have this problem or a solution? Thanks, Wes __________________ 2010 15" MacBook Pro, Anti-Glare Hi-Res, 2.4 i5 128 GB SSD & 500GB HDD in optibay; iPhone 5 32GB; ATV3; 2011 Core i7 27" iMac 2GB VRAM; "New" iPad 32GB AT&T 4G; 2012 MacBook Air 13", i7, 8GB, 256GB
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Jan 22, 2011, 04:29 PM	#3
WesCole Thread Starter macrumors 6502a Join Date: Jul 2010 Location: Texas	I might have to check the video files that are out of sync and see if they have 6 channel audio. Any advice on how to change it if they do? __________________ 2010 15" MacBook Pro, Anti-Glare Hi-Res, 2.4 i5 128 GB SSD & 500GB HDD in optibay; iPhone 5 32GB; ATV3; 2011 Core i7 27" iMac 2GB VRAM; "New" iPad 32GB AT&T 4G; 2012 MacBook Air 13", i7, 8GB, 256GB
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Jan 22, 2011, 04:13 PM	#2
Sedulous macrumors 65816 Join Date: Dec 2002	I've not had the problem you described. However, I have the opposite: videos playback fine on ATV2, QTX, VLC, etc., but there is sync issue when playing on iPad. I did notice that if I scrub the video a little, the audio syncs again. I think it has something to do with 6 channel AAC.
	0

Jan 24, 2011, 08:40 PM	#4
Sedulous macrumors 65816 Join Date: Dec 2002	A variety of ways exist. You could use MKVTools to add a 2 channel AAC track. This avoids re-encoding and should be easy to do.
	0


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