This may make my decision to consolidate a little easier.

I have two external drives, each of which has a bunch of ripped DVD folders on it. At first I was going to just drag and drop all from one drive to the other, but I got an error. So I decided to move them one at a time. But I'm still getting the same error message below. Any idea why? Both drives are formatted as OSX Extended (journaled).

Not the end of the world if I leave them spread over two drives, but I thought it might be convenient to have all on one. Thanks.

Maybe try CCC, or some other utility that uses an exact copy format algorithm?
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Will the video that the file belongs to play properly or is the file in fact damaged?

Is that the only file that errors out or are all the files on the drive giving you the error msg?

-36 usually really means that the file can't be read properly - try a new cable? remount the drive?

They play fine from the source drive by opening DVD Player and navigating to the VIDEO_TS folder. It's only during the move/copy that I get the error message. I haven't tried them all, but randomly selected three or four and they all choked with that message less than a minute in.

I think it's because I ripped them from actual DVDs. Now I just tried converting one in Handbrake. It worked, but I forgot to enable subtitles. It also took about 40 minutes to do. I don't know if I want these movies that badly. Guess I'll be a little more choosey as I proceed.



Edited 1 time(s). Last edit at 06/29/2024 02:01PM by wurm.

Video players in general can deal with a few corrupt bits/bytes. No one will notice if a pixel on a particular frame has a wrong value. People will complain if the video stops playing.

So my guess is that the file is indeed corrupt but the video player ignores it and keeps going.

As a test, you can try to copy (not move) the file to a different folder on the same drive. I am curious if you still get that error.

see if Handbrake can read and re-save.

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!#$@@$#!

Quod suus via crustulum saxum

Quote
special
Video players in general can deal with a few corrupt bits/bytes. No one will notice if a pixel on a particular frame has a wrong value. People will complain if the video stops playing...

Yep. Built-in error-correction.

Could be file-level corruption, but drives tend to do one and only one thing reliably: die.

Back up everything now.

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I hope your bitcoin wallet is safe.

I should have clarified. I was using the DVD Player app/program on the Mini, not a physical DVD Player.

I did try Handbrake on another one and it only converted part of the movie, though it said the total time was 1:40. I obviously need to play around with settings a bit. I tend to be a default kind of guy.

Quote
wurm
I should have clarified. I was using the DVD Player app/program on the Mini, not a physical DVD Player.
...

Understood, both the macOS DVD Player App and the stand alone hardware box will try to plough through several corrupt bytes and play and play... if the error is too bad, it will eventually give up.

Did you try my suggestion to copy the files to another location on the same hard drive?

Or can you rip a fresh copy?



Edited 1 time(s). Last edit at 06/29/2024 07:19PM by special.

Can't rip a fresh copy as I no longer have the DVD. I'm in the middle of a Handbrake conversion at the moment. After that finishes, I'll check it out and if it works, I'll just convert them that way as it will definitely take up less space. If it fails, I'll try your suggestion of copying onto the same drive. Thanks.

Well, Hanbrake just finished one of them, but I forgot to select subtitles again. Damn. Trying another, making sure it's selected. The previous one converted the nearly 6GB VIDEO_TS to a 704MB mp4 file, so that will definitely save me some room if I decide to convert all of these things. Still takes about 40 minutes for the conversion. I guess it really is a good excuse to just take a close look at what I really want to save and otherwise just delete them.

At this point I don't see what's to gain by copying the actual VIDEO_TS folder onto the same drive as the original. Even if it does it successfully, I'll still want to convert to a smaller file.



Edited 1 time(s). Last edit at 06/29/2024 08:03PM by wurm.

Quote
wurm
this point I don't see what's to gain by copying the actual VIDEO_TS folder

none. I use HB for all DVD ripping. Works fast and the films always playback. I also have forgotten subs on more than one occasion. Annoying.

I use Fast 720p MP4.

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!#$@@$#!

Quod suus via crustulum saxum

Well, this is rather embarrassing. For the hell of it (yeah, I should have checked first) I did a Get Info on both external drives and a couple of the Permissions were set to Read Only. I changed everything to Read and Write, dragged a folder over from one drive to the other and it worked without the error. Just checked the resulting file and it plays fine. D'oh!

I still may weed out a few movies I no longer care about, but for now at least this simple fix seems to have worked.