Pixar's Blu-Ray Audio Skew Question

[Mivemot]

Hi there,

I'm currently ripping my Pixar's Luca Blu-ray, and just like with my Wall-E Blu-ray, I'm getting a lot of audio skew warnings during the process. I rarely encounter these issues with other discs, so I wanted to ask: Is this normal for Pixar's animated movies? Is there a way to get a perfect match?
Tracks 1 and 2 contain the English dub, while 3 and 4 contain the German dub, using the correct .00800 MPLS.
What are considered acceptable audio skews? A 10ms skew is probably barely visible, right?

Thanks in advance to anyone taking the time to answer!

Here's a quick example of the warnings:

Code: Select all

AV sync issue in stream 1,2,3,4 at 0:00:44.502 with a duration of 9.208ms: encountered overlapping frame, audio skew is +9.208ms  
AV sync issue in stream 3,4 at 0:01:04.064 with a duration of 22.791ms: encountered overlapping frame, audio skew is +32ms  
AV sync issue in stream 3,4 at 0:01:04.096 with a duration of 32ms: 1 frame(s) dropped to reduce audio skew to +0ms  
AV sync issue in stream 1,2 at 0:01:04.064 with a duration of 1.458ms: encountered overlapping frame, audio skew is +10.666ms  
AV sync issue in stream 1,2 at 0:01:04.074 with a duration of 10.666ms: 1 frame(s) dropped to reduce audio skew to +0ms  
AV sync issue in stream 3,4 at 0:03:41.012 with a duration of 11.541ms: encountered overlapping frame, audio skew is +11.541ms  
AV sync issue in stream 1,2 at 0:04:03.409 with a duration of 2.625ms: encountered overlapping frame, audio skew is +3.5ms  
AV sync issue in stream 3,4 at 0:04:03.409 with a duration of 2.625ms: encountered overlapping frame, audio skew is +14.166ms  
AV sync issue in stream 1,2 at 0:16:07.049 with a duration of 8.416ms: encountered overlapping frame, audio skew is +11.916ms  
AV sync issue in stream 1,2 at 0:16:07.061 with a duration of 10.666ms: 1 frame(s) dropped to reduce audio skew to +1.25ms  
AV sync issue in stream 3,4 at 0:16:07.049 with a duration of 8.416ms: encountered overlapping frame, audio skew is +22.583ms  
AV sync issue in stream 1,2 at 0:26:51.151 with a duration of 4.875ms: encountered overlapping frame, audio skew is +6.125ms  
AV sync issue in stream 3,4 at 0:26:51.151 with a duration of 26.208ms: encountered overlapping frame, audio skew is +48.791ms  
AV sync issue in stream 3,4 at 0:26:51.200 with a duration of 32ms: 1 frame(s) dropped to reduce audio skew to +16.791ms  
AV sync issue in stream 3,4 at 0:32:38.706 with a duration of 28.458ms: encountered overlapping frame, audio skew is +45.25ms  
AV sync issue in stream 3,4 at 0:32:38.752 with a duration of 32ms: 1 frame(s) dropped to reduce audio skew to +13.25ms  
...and so on.  

[sierrasawdust]

IIRC, the threshold for the most perceptive of humans tends to be -20ms / +40ms. Anything inside that shouldn't be an issue. Most folks really don't start to get weirded out until somewhere up to about twice that (-40ms / +80ms ). Your best bet is to take the rip and watch it with a friend or two and don't say anything. Just wait and see if they say anything. If they do, then you know it's too much.

[dcoke22]

They're a side effect of the large amounts of seamless branching used on most Pixar discs. A lot of noise in the log from MakeMKV stitching together all the segments is common on Pixar films and should not be anything to worry about.