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Sometimes discs have a nearly invisible film on them even when brand new from a factory sealed package. I find a gentle cleaning with warm water and dish soap can help. Ripping UHDs is hard. The data density is very high which makes correctly reading all the data harder. Physically, the discs are t...

If you're experiencing rip errors, please read here first: https://forum.makemkv.com/forum/viewtopic.php?f=8&t=15055 There's probably more to the log that didn't make it into the post, but the optical drive is having a hard time correctly reading all the bits on the disc. There's little that Ma...

https://forum.makemkv.com/forum/viewtopic.php?f=8&t=15055 <-- rip errors Th optical drive is having trouble correctly reading all the bits on the disc. The disc is likely dirty (perhaps in a way invisible to the naked eye) or maybe damaged if it has circular scratches. These issues are happenin...

Hey! It's aggravating that no one has responded to you. I'm having the exact same issue with an LG WH14NS40 and Back To The Future 4k. No one has responded to my thread either https://forum.makemkv.com/forum/viewtopic.php?f=16&t=25210&p=108512 I was using a UH12NS40 successfully and ripping ...

[UPDATE 5/12/21] I returned the drive, got a brand new one, and flashed it to MK WH16NS40 Rev1.05 . I ran Back to the Future through again and got this. Why is this still happening with a new drive? AV synchronization issues were found in file 'Q://Back to the Future-SEG_MainFeature_t44.mkv' (title ...