Ripped UHD movies skipping, freezing and corrupted frames

[Woodstock]

If the rip is succeeding, the disk is being read - what you have are the contents of the disk. MakeMKV is doing a checksum on the data as it rip, and comparing it to the checksums on the disk. To have a corruption, the on-disk checksum would have to match the ripped checksum, which is rather difficult to do.

As for PLAYING, that's dependent on a lot of things, including bandwidth. Are you writing to the same place?

[dcoke22]

I guess it comes down to are you hitting some sort of resource constraint? Or is there a problem with the file?

If you're running macOS Sonoma, then presumably your Mac isn't ancient (though 14.5 is current, not 14.3). That said, playing UHD files is a non-trivial affair. IINA is a very nice GUI wrapped around MPV. I have both on my old Intel iMac. MPV supports using Apple video decoder hardware acceleration and is the only way my iMac can successfully play a UHD. I believe by default IINA will use hardware acceleration as well.

File corruption is very unlikely, but not impossible. Strange corruption issue - MakeMKV's fault or bad HDD? In that thread, a user was indeed having file corruption from a bad USB chipset on his computer. There's an ffmpeg command listed in that thread that can help determine if your .mkv file is corrupt.

[Woodstock]

Turns out, the original poster was doing so just to make a link to their website, added to their signature after the message was approved.

The original post (and poster) are now gone.