AV Sync Issue on UHD with 1.15.1

[mizu_ger]

I saw this mentioned in the Star Wars 4K thread, but every disk i have converted recently has AV Sync Issues and dropped frames reported in the log window. It's on new disks and older titles I've purchased in the past few weeks. I don't remember seeing this happen on versions prior to 1.15.1.

Is anyone else having this problem too?

[BradM]

I am having the same exact issue on every title I have attempted both on Blu-Ray and 4K.

[omk1980]

Same issues w/the stars wars 4k box set.

[Meister_Proper]

Do see or hear any problems while playback?

[BradM]

I did on the two titles I checked out. Voices were off by about a second or so from the picture.

[mizu_ger]

Do see or hear any problems while playback?

Not so far. I'm backing up my disks to a NAS and haven't had a chance to view one all the way through yet. Jumping to the end of the Star Wars films in MPC-HC looks fine. I don't see any problems. I still need to watch one on the media player attached to my projector.

[jayper]

I backed up my Bridge on the River Kwai UHD (USA) this morning and for the following note in the debug log.

Code: Select all

AV sync issue in stream 1 at 0:00:00 with duration of 0.666ms : encountered overlapping frame, audio skew is +0.666ms

I tried from a full disc backup, as well as ripping the main title directly from the disc. The message was shown in both attempts.

Given that the issue is at the 0:00:00 timestamp, I'm wondering if the audio skew is intentional? Does the above just mean there was a frame of video with no corresponding audio?

[mizu_ger]

I backed up my Bridge on the River Kwai UHD (USA) this morning and for the following note in the debug log.

Code: Select all

AV sync issue in stream 1 at 0:00:00 with duration of 0.666ms : encountered overlapping frame, audio skew is +0.666ms

I tried from a full disc backup, as well as ripping the main title directly from the disc. The message was shown in both attempts.

Given that the issue is at the 0:00:00 timestamp, I'm wondering if the audio skew is intentional? Does the above just mean there was a frame of video with no corresponding audio?

I've seen similar on some disks. It mentions a sync problem at the start of the disk, but doesn't drop any frames. It worries me when I see that MakeMKV is deciding to drop frames to correct a problem.

[mizu_ger]

I backed up Toy Story 2 UHD today. Below is the log window output. That's a total of 24 frames dropped, so 1 second.

Is there any explanation for why MakeMKV is doing this? I've seen it on HD Blu-rays too. It occurs more often than not.

AV sync issue in stream 1 at 0:00:00 with duration of 0.666ms : encountered overlapping frame, audio skew is +0.666ms
AV sync issue in stream 2 at 0:00:00 with duration of 0.666ms : encountered overlapping frame, audio skew is +0.666ms
AV sync issue in stream 1 at 0:00:45.336 with duration of 6.486ms : encountered overlapping frame, audio skew is +7.152ms
AV sync issue in stream 2 at 0:00:45.336 with duration of 0.819ms : encountered overlapping frame, audio skew is +1.486ms
AV sync issue in stream 1 at 0:01:38.181 with duration of 19.83ms : encountered overlapping frame, audio skew is +26.983ms
AV sync issue in stream 2 at 0:01:38.180 with duration of 0.83ms : encountered overlapping frame, audio skew is +2.316ms
AV sync issue in stream 2 at 0:01:38.182 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to +0.65ms
AV sync issue in stream 1 at 0:03:41.136 with duration of 20.166ms : encountered overlapping frame, audio skew is +47.15ms
AV sync issue in stream 1 at 0:03:41.184 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +15.15ms
AV sync issue in stream 2 at 0:03:41.136 with duration of 0.833ms : encountered overlapping frame, audio skew is +1.483ms
AV sync issue in stream 1 at 0:04:25.598 with duration of 18.35ms : encountered overlapping frame, audio skew is +33.5ms
AV sync issue in stream 1 at 0:04:25.632 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +1.5ms
AV sync issue in stream 2 at 0:04:25.597 with duration of 0.85ms : encountered overlapping frame, audio skew is +2.333ms
AV sync issue in stream 2 at 0:04:25.600 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to +0.666ms
AV sync issue in stream 1 at 0:18:11.047 with duration of 22.819ms : encountered overlapping frame, audio skew is +24.319ms
AV sync issue in stream 2 at 0:18:11.046 with duration of 0.819ms : encountered overlapping frame, audio skew is +1.486ms
AV sync issue in stream 1 at 0:18:37.907 with duration of 20ms : encountered overlapping frame, audio skew is +44.319ms
AV sync issue in stream 1 at 0:18:37.952 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +12.319ms
AV sync issue in stream 2 at 0:18:37.906 with duration of 0.833ms : encountered overlapping frame, audio skew is +2.319ms
AV sync issue in stream 2 at 0:18:37.909 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to +0.652ms
AV sync issue in stream 1 at 0:32:33.492 with duration of 30.994ms : encountered overlapping frame, audio skew is +43.313ms
AV sync issue in stream 1 at 0:32:33.536 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +11.313ms
AV sync issue in stream 2 at 0:32:33.491 with duration of 0.827ms : encountered overlapping frame, audio skew is +1.48ms
AV sync issue in stream 1 at 0:33:06.609 with duration of 3.338ms : encountered overlapping frame, audio skew is +14.652ms
AV sync issue in stream 2 at 0:33:06.608 with duration of 0.838ms : encountered overlapping frame, audio skew is +2.319ms
AV sync issue in stream 2 at 0:33:06.610 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to +0.652ms
AV sync issue in stream 1 at 0:40:05.486 with duration of 3.33ms : encountered overlapping frame, audio skew is +17.983ms
AV sync issue in stream 2 at 0:40:05.485 with duration of 0.83ms : encountered overlapping frame, audio skew is +1.483ms
AV sync issue in stream 1 at 0:40:45.776 with duration of 30.016ms : encountered overlapping frame, audio skew is +48ms
AV sync issue in stream 1 at 0:40:45.824 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +16ms
AV sync issue in stream 2 at 0:40:45.775 with duration of 0.85ms : encountered overlapping frame, audio skew is +2.333ms
AV sync issue in stream 2 at 0:40:45.777 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to +0.666ms
AV sync issue in stream 1 at 0:43:01.161 with duration of 6.15ms : encountered overlapping frame, audio skew is +22.15ms
AV sync issue in stream 2 at 0:43:01.161 with duration of 0.816ms : encountered overlapping frame, audio skew is +1.483ms
AV sync issue in stream 1 at 0:43:30.316 with duration of 29.83ms : encountered overlapping frame, audio skew is +51.98ms
AV sync issue in stream 1 at 0:43:30.368 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +19.98ms
AV sync issue in stream 2 at 0:43:30.315 with duration of 0.83ms : encountered overlapping frame, audio skew is +2.313ms
AV sync issue in stream 2 at 0:43:30.317 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to +0.647ms
AV sync issue in stream 1 at 0:50:48.711 with duration of 4.186ms : encountered overlapping frame, audio skew is +24.166ms
AV sync issue in stream 2 at 0:50:48.711 with duration of 0.852ms : encountered overlapping frame, audio skew is +1.5ms
AV sync issue in stream 2 at 0:50:48.712 with duration of 0.833ms : 1 frame(s) dropped to reduce audio skew to +0.666ms
AV sync issue in stream 2 at 0:51:34.131 with duration of 0.813ms : encountered overlapping frame, audio skew is +1.48ms
AV sync issue in stream 1 at 0:51:34.132 with duration of 19.147ms : encountered overlapping frame, audio skew is +43.313ms
AV sync issue in stream 1 at 0:51:34.176 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +11.313ms
AV sync issue in stream 1 at 1:25:09.479 with duration of 13.333ms : encountered overlapping frame, audio skew is +24.647ms
AV sync issue in stream 2 at 1:25:09.478 with duration of 0.833ms : encountered overlapping frame, audio skew is +2.313ms
AV sync issue in stream 2 at 1:25:09.480 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to +0.647ms
AV sync issue in stream 1 at 1:25:48.810 with duration of 29.186ms : encountered overlapping frame, audio skew is +53.833ms
AV sync issue in stream 1 at 1:25:48.864 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +21.833ms
AV sync issue in stream 2 at 1:25:48.809 with duration of 0.852ms : encountered overlapping frame, audio skew is +1.5ms
AV sync issue in stream 2 at 1:25:48.810 with duration of 0.833ms : 1 frame(s) dropped to reduce audio skew to +0.666ms

[mizu_ger]

31 frames dropped on Rogue One.

When I watch this from the disk in my UHD player there are no AV sync problems, but according to MakeMKV the audio and video should be out of sync by 31 frames at the end of the film. That's over a second, which would be very noticeable. But I don't notice any problems with the disk. What's going on?????? This is very strange

AV sync issue in stream 1 at 0:00:40.706 with duration of 29.333ms : encountered overlapping frame, audio skew is +29.333ms
AV sync issue in stream 2 at 0:00:40.706 with duration of 0.833ms : 1 frame(s) dropped to reduce audio skew to +0ms
AV sync issue in stream 1 at 0:07:41.210 with duration of 8.65ms : encountered overlapping frame, audio skew is +37.983ms
AV sync issue in stream 1 at 0:07:41.248 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +5.983ms
AV sync issue in stream 1 at 0:08:42.688 with duration of 25.683ms : encountered overlapping frame, audio skew is +31.666ms
AV sync issue in stream 2 at 0:08:42.687 with duration of 0.85ms : encountered overlapping frame, audio skew is +1.666ms
AV sync issue in stream 2 at 0:08:42.689 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to +0ms
AV sync issue in stream 1 at 0:09:04.293 with duration of 26.983ms : encountered overlapping frame, audio skew is +58.65ms
AV sync issue in stream 1 at 0:09:04.352 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +26.65ms
AV sync issue in stream 1 at 0:11:04.496 with duration of 20.683ms : encountered overlapping frame, audio skew is +47.333ms
AV sync issue in stream 1 at 0:11:04.544 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +15.333ms
AV sync issue in stream 2 at 0:11:04.495 with duration of 0.85ms : encountered overlapping frame, audio skew is +1.666ms
AV sync issue in stream 2 at 0:11:04.497 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to +0ms
AV sync issue in stream 1 at 0:11:59.927 with duration of 25.147ms : encountered overlapping frame, audio skew is +40.48ms
AV sync issue in stream 1 at 0:11:59.968 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +8.48ms
AV sync issue in stream 1 at 0:12:21.073 with duration of 6.186ms : encountered overlapping frame, audio skew is +14.666ms
AV sync issue in stream 2 at 0:12:21.072 with duration of 0.852ms : encountered overlapping frame, audio skew is +1.666ms
AV sync issue in stream 2 at 0:12:21.074 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to +0ms
AV sync issue in stream 1 at 0:12:37.465 with duration of 24.313ms : encountered overlapping frame, audio skew is +38.98ms
AV sync issue in stream 1 at 0:12:37.504 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +6.98ms
AV sync issue in stream 1 at 0:13:41.028 with duration of 20.666ms : encountered overlapping frame, audio skew is +27.647ms
AV sync issue in stream 2 at 0:13:41.027 with duration of 0.833ms : encountered overlapping frame, audio skew is +1.647ms
AV sync issue in stream 2 at 0:13:41.029 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to -0.019ms
AV sync issue in stream 1 at 0:14:05.260 with duration of 23.502ms : encountered overlapping frame, audio skew is +51.15ms
AV sync issue in stream 1 at 0:14:05.312 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +19.15ms
AV sync issue in stream 1 at 0:20:36.401 with duration of 27.183ms : encountered overlapping frame, audio skew is +46.333ms
AV sync issue in stream 1 at 0:20:36.448 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +14.333ms
AV sync issue in stream 2 at 0:20:36.400 with duration of 0.85ms : encountered overlapping frame, audio skew is +1.666ms
AV sync issue in stream 2 at 0:20:36.402 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to +0ms
AV sync issue in stream 1 at 0:20:53.835 with duration of 5.816ms : encountered overlapping frame, audio skew is +20.15ms
AV sync issue in stream 1 at 0:36:51.125 with duration of 22.833ms : encountered overlapping frame, audio skew is +42.983ms
AV sync issue in stream 1 at 0:36:51.168 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +10.983ms
AV sync issue in stream 2 at 0:36:51.124 with duration of 0.833ms : encountered overlapping frame, audio skew is +1.65ms
AV sync issue in stream 2 at 0:36:51.125 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to -0.016ms
AV sync issue in stream 1 at 0:37:11.145 with duration of 12ms : encountered overlapping frame, audio skew is +22.983ms
AV sync issue in stream 1 at 0:56:11.575 with duration of 17.163ms : encountered overlapping frame, audio skew is +40.147ms
AV sync issue in stream 1 at 0:56:11.616 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +8.147ms
AV sync issue in stream 2 at 0:56:11.575 with duration of 0.83ms : encountered overlapping frame, audio skew is +1.647ms
AV sync issue in stream 2 at 0:56:11.576 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to -0.019ms
AV sync issue in stream 1 at 0:56:26.549 with duration of 2.686ms : encountered overlapping frame, audio skew is +10.833ms
AV sync issue in stream 2 at 0:56:26.549 with duration of 0.833ms : 1 frame(s) dropped to reduce audio skew to +0ms
AV sync issue in stream 1 at 1:23:25.541 with duration of 15.48ms : encountered overlapping frame, audio skew is +26.313ms
AV sync issue in stream 1 at 1:23:44.435 with duration of 17.836ms : encountered overlapping frame, audio skew is +44.15ms
AV sync issue in stream 1 at 1:23:44.480 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +12.15ms
AV sync issue in stream 2 at 1:23:44.435 with duration of 0.836ms : encountered overlapping frame, audio skew is +1.65ms
AV sync issue in stream 2 at 1:23:44.436 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to -0.016ms
AV sync issue in stream 1 at 2:05:39.406 with duration of 5.163ms : encountered overlapping frame, audio skew is +17.313ms
AV sync issue in stream 1 at 2:07:11.290 with duration of 20.686ms : encountered overlapping frame, audio skew is +38ms
AV sync issue in stream 1 at 2:07:11.328 with duration of 32ms : 1 frame(s) dropped to reduce audio skew to +6ms
AV sync issue in stream 2 at 2:07:11.289 with duration of 0.852ms : encountered overlapping frame, audio skew is +1.666ms
AV sync issue in stream 2 at 2:07:11.290 with duration of 1.666ms : 2 frame(s) dropped to reduce audio skew to +0ms

[preserve]

Noting same as jayper, strange 0.666ms skew at the 0:00:00 timestamp with 1.15.2:

Mission: Impossible Fallout 4K (Canada - likely same as US on this release)

Saving 1 titles into directory E:/Video/Mission Impossible 6 UHD
AV synchronization issues were found in file 'E:/Video/Mission Impossible 6 UHD/Mission- Impossible Fallout_t33_s00800.mkv' (title #34)
AV sync issue in stream 1 at 0:00:00 with duration of 0.666ms : encountered overlapping frame, audio skew is +0.666ms
AV synchronization issues were found in file 'Mission- Impossible Fallout_t33_s00800.mkv' (title #34)
Forced subtitles track #9 turned out to be empty and was removed from output file
Forced subtitles track #11 turned out to be empty and was removed from output file
Forced subtitles track #13 turned out to be empty and was removed from output file
Forced subtitles track #15 turned out to be empty and was removed from output file
1 titles saved

[dcoke22]

I wrote up what I think is going on in a different thread.

viewtopic.php?f=12&t=22903&p=94894#p94894

[preserve]

^ Agreed when the messages specifically mention overlapping frames, still think it's strange/funny to have this right at the start though!

[geogan]

I have just tried to watch Close Encounters which I ripped with v1.16.3 a few days ago - watching on NVidia Shield 2017 - there is SEVERE audio issues... it does not stay in sync with the picture for more than a minute before it drifts off - voices and mouthing on screen is SECONDS off after a few minutes!!?? I don't know what is going on - never seen it before on any ripped Blu-ray on Shield and I have been ripping my own 1080P Blurays for years.