BD-R AV Sync Errors on special features

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danielg
Posts: 4
Joined: Tue Jul 07, 2020 6:43 am

BD-R AV Sync Errors on special features

Post by danielg »

I was ripping the "Spanglish" BD-R, and fortunately the main title ripped fine, and some "random" title that looks like test data (has various video patterns used for video calibration), and then two special features.

On both special features I get AV sync errors that stop the rips:

Code: Select all

Using direct disc access mode
AACS directory not present, assuming unencrypted disc
File 00001.mpls was added as title #0
Title #00095.mpls has length of 4 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00096.mpls has length of 2 seconds which is less than minimum title length of 15 seconds and was therefore skipped
File 00102.mpls was added as title #1
Title #00080.m2ts has length of 1 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00081.m2ts has length of 1 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00082.m2ts has length of 1 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00097.m2ts has length of 1 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00098.m2ts has length of 3 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00099.m2ts has length of 1 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00100.m2ts has length of 14 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00103.m2ts has length of 0 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00104.m2ts has length of 0 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00116.m2ts has length of 11 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00205.m2ts has length of 5 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00208.m2ts has length of 11 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00220.m2ts has length of 0 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00221.m2ts has length of 0 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00222.m2ts has length of 0 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00223.m2ts has length of 0 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00224.m2ts has length of 0 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00225.m2ts has length of 0 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00226.m2ts has length of 0 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00227.m2ts has length of 0 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00228.m2ts has length of 0 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00229.m2ts has length of 0 seconds which is less than minimum title length of 15 seconds and was therefore skipped
Title #00249.m2ts has length of 1 seconds which is less than minimum title length of 15 seconds and was therefore skipped
File 00334.m2ts was added as title #2
File 00335.m2ts was added as title #3
Operation successfully completed
Saving 2 titles into directory C:/VideoMaster/Ripping/MakeMKV
AV synchronization issues were found in file 'C:/VideoMaster/Ripping/MakeMKV/Spanglish_t02.mkv' (title #3)
AV sync issue in stream 0 at 0:00:29.929 : video frame timecode differs by +66.733ms
AV sync issue in stream 0 at 0:00:29.963 : video frame timecode differs by -33.366ms
LIBMKV_TRACE: Exception: MKV_ASSERT: TimecodeDelay >= int16(0x8000) && TimecodeDelay <= int16(0x7FFF)
Failed to save title 2 to file C:/VideoMaster/Ripping/MakeMKV/Spanglish_t02.mkv
AV synchronization issues were found in file 'C:/VideoMaster/Ripping/MakeMKV/Spanglish_t03.mkv' (title #4)
AV sync issue in stream 0 at 0:00:14.948 : video frame timecode differs by +33.366ms
AV sync issue in stream 0 at 0:00:14.981 : video frame timecode differs by -33.366ms
AV sync issue in stream 0 at 0:00:29.929 : video frame timecode differs by +33.366ms
AV sync issue in stream 0 at 0:00:29.963 : video frame timecode differs by -33.366ms
LIBMKV_TRACE: Exception: MKV_ASSERT: TimecodeDelay >= int16(0x8000) && TimecodeDelay <= int16(0x7FFF)
Failed to save title 3 to file C:/VideoMaster/Ripping/MakeMKV/Spanglish_t03.mkv
0 titles saved, 2 failed
Any ideas on this particular case?

Is there a way to _ignore_ the exceptions and force the rip? I know that _could_ be disastrous, but it would be nice to be able to try that. I've had these kind of AV sync issues stop me before with an burned DVD, this is just the first time I've ever posted about it... in the other case I couldn't ever rip that disc (and I'd love to go back and try).

One interesting thing is that it appears the disc isn't encrypted. So I copied the M2TS files for the special features directly to disk and I can play them with VLC Media Player, and was able to do a convert. So I know, there's a workaround, but I've always wanted to ask about the AV sync issues and if they can be ignored - so please forgive me for posting this anyway.

The special features appear to be 480i upconverted to 1080p without even deinterlacing first (talk about lazy) - making it so the combed image can't be deinterlaced as it's been upconverted that way and so each "comb tooth" is 2 or three rows ( :roll: )
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