Is it possible to force MakeMKV to ignore AV sync issues on a case-by-case basis?

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VarHD
Posts: 88
Joined: Thu Apr 04, 2019 4:40 pm

Is it possible to force MakeMKV to ignore AV sync issues on a case-by-case basis?

#1 Post by VarHD » Fri Oct 30, 2020 4:18 pm

I was ripping the "Onwards" movie and got the following sync issues in the log:

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AV sync issue in stream 1 at 0:03:18.240 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to -0.019ms
AV sync issue in stream 1 at 0:08:14.327 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to +0ms
AV sync issue in stream 1 at 0:09:34.991 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to -0.016ms
AV sync issue in stream 1 at 0:12:38.800 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to -0.019ms
AV sync issue in stream 1 at 0:16:42.001 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to +0ms
AV sync issue in stream 1 at 0:22:33.602 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to -0.016ms
AV sync issue in stream 1 at 0:26:47.690 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to -0.016ms
Is there a way to tell MakeMKV to not drop certain frames? I'm asking because in the very first case (at 0:03:18.240) the drop is actually audible, there's a "pop" in the audio track at this spot. It's not an issue in the other places so I wish there was a way to tell the app to ignore this particular sync issue.

dcoke22
Posts: 3063
Joined: Wed Jul 22, 2020 11:25 pm

Re: Is it possible to force MakeMKV to ignore AV sync issues on a case-by-case basis?

#2 Post by dcoke22 » Fri Oct 30, 2020 5:58 pm

There is a discussion going on over here viewtopic.php?f=12&t=17597&start=150#p98707 and over here https://www.makemkv.com/forum/viewtopic ... 706#p98706 about these messages.

It looks like you're getting this while ripping the blu-ray? What kind of audio track is stream 1 (e.g. TrueHD or DTS-MA)?

VarHD
Posts: 88
Joined: Thu Apr 04, 2019 4:40 pm

Re: Is it possible to force MakeMKV to ignore AV sync issues on a case-by-case basis?

#3 Post by VarHD » Fri Oct 30, 2020 6:41 pm

It looks like you're getting this while ripping the blu-ray? What kind of audio track is stream 1 (e.g. TrueHD or DTS-MA)?
Yes, it's a 4K disc, I ripped multiple tracks - TrueHD + the DD core of the TrueHD track + the DTS-MA track. The pop happens only on the TrueHD track. I'll add this info to the other thread.

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