I've noticed a recurring issue with video corruption in the last dozen or so movies I've ripped. The corruption appears periodically and is repeatable at the same timestamp.
To troubleshoot, I've tried ripping to different hard drives, but the issue persists, though at different points in the movie. Additionally, I re-ripped a movie that I had successfully ripped years ago, and it now also exhibits the same corruption issues that were not present in the original rip.
Given that I've ruled out multiple hard drives and multiple movies, and the issue remains with the Blu-ray drive as the only constant variable, would it be accurate to assume that my Blu-ray drive is failing?
Corrupted Movie Rips
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Archbishopfocwod
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Re: Corrupted Movie Rips
Yes, they do. Although the corruption looks slightly different depending on which player is being used.
Re: Corrupted Movie Rips
Don't play from optical drive. Rip to HDD and play it from there. The issue is yours and not related to Makemkv.Archbishopfocwod wrote: ↑Sat Jul 05, 2025 9:23 pmYes, they do. Although the corruption looks slightly different depending on which player is being used.
Re: Corrupted Movie Rips
When you make a rip with MakeMKV, are there errors in the log or does it complete cleanly?
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Archbishopfocwod
- Posts: 12
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Re: Corrupted Movie Rips
I never play the movies from the drive, everything gets ripped to hard drives. I have three 10tb hdd's full with movies and working on filling up the fourth so I am not new to the process. At this point I feel it has to be the bluray drive.Coopervid wrote: ↑Sat Jul 05, 2025 9:33 pmDon't play from optical drive. Rip to HDD and play it from there. The issue is yours and not related to Makemkv.Archbishopfocwod wrote: ↑Sat Jul 05, 2025 9:23 pmYes, they do. Although the corruption looks slightly different depending on which player is being used.
Re: Corrupted Movie Rips
Try to clean the laser lens.
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Archbishopfocwod
- Posts: 12
- Joined: Tue Oct 13, 2020 12:40 am
Re: Corrupted Movie Rips
A couple of years ago, there was a user on this forum who chased .mkv file corruption to a wonky USB chipset in his computer if I remember correctly. When he connected things to a different USB port on a card he installed, his issues went away. And recently I saw a user that is picking up some corruption via network transfer errors or some corruption on the HDDs in his NAS. This sort of stuff is very rare, but it does seem to happen.
It is my understanding that MakeMKV uses the content hash tables that come on a blu-ray or UHD to verify that what the optical drive reads from the disc is correct. If it is incorrect, MakeMKV retries the read until it gets correct data or it reaches the retry limit. When that happens, there's a hash error and usually MakeMKV deletes the offending file.
So if MakeMKV finishes a rip of a blu-ray or UHD and the log is clean with no errors, one should have a high degree of confidence that the optical drive correctly read all the data off the disc and it ended up in the .mkv file (or the backup folder). If the optical drive is having difficulty, I would expect it to manifest as read failures or some other error in MakeMKV. Since you don't have any of that, it suggests, to me, that the corruption is entering somewhere farther down the line. Perhaps a corrupted hard drive? (I know you tested on multiple HDDs) Perhaps a bad USB cable connecting a hard drive? Or a wonky HD enclosure? Or a failing USB port?
Often times when people have corruption during playback they're using a poor choice of software player and using a different one helps. Or they're using hardware acceleration during playback and their GPU driver has a bug. Turning that off or on or using a different player often helps.
There's probably a 100 subtle things that might be making an impact. Since this behavior started just recently, is there anything that changed on your computer around the same time this corrupted behavior started?
It is my understanding that MakeMKV uses the content hash tables that come on a blu-ray or UHD to verify that what the optical drive reads from the disc is correct. If it is incorrect, MakeMKV retries the read until it gets correct data or it reaches the retry limit. When that happens, there's a hash error and usually MakeMKV deletes the offending file.
So if MakeMKV finishes a rip of a blu-ray or UHD and the log is clean with no errors, one should have a high degree of confidence that the optical drive correctly read all the data off the disc and it ended up in the .mkv file (or the backup folder). If the optical drive is having difficulty, I would expect it to manifest as read failures or some other error in MakeMKV. Since you don't have any of that, it suggests, to me, that the corruption is entering somewhere farther down the line. Perhaps a corrupted hard drive? (I know you tested on multiple HDDs) Perhaps a bad USB cable connecting a hard drive? Or a wonky HD enclosure? Or a failing USB port?
Often times when people have corruption during playback they're using a poor choice of software player and using a different one helps. Or they're using hardware acceleration during playback and their GPU driver has a bug. Turning that off or on or using a different player often helps.
There's probably a 100 subtle things that might be making an impact. Since this behavior started just recently, is there anything that changed on your computer around the same time this corrupted behavior started?