Arch Linux

AlexJ136

Member

Registered: 2013-08-06

Posts: 2

Can read video file from optical disk but cannot copy it to hard drive

I have an optical disk (DVD) with an important video file on it, and I don't have a backup. I can play back the video file (an mkv file, playing back with gnome-mplayer) without any problems, but I would like to copy the file over to my hard drive and then back it up to the cloud.

When I try to copy the file over to my hard disk, I get an error:

+ [~] $ cp -v /run/media/alex/DVD1/video.mkv Videos/
'/run/media/alex/DVD1/video.mkv' -> 'Videos/video.mkv'
cp: error reading '/run/media/alex/DVD1/video.mkv': Input/output error

Any ideas?

frostschutz

Member

Registered: 2013-11-15

Posts: 1,417

Re: Can read video file from optical disk but cannot copy it to hard drive

try ddrescue to deal with discs that have read errors on them

also check dmesg if any I/O error messages appeared

in case of optical disc this can also be dirt, smudge or a scratch that might be able to buff out, or another drive might be able to read it better

but you should ddrescue first, try physical things later

Last edited by frostschutz (2019-08-07 08:33:17)

kermit63

Member

Registered: 2018-07-04

Posts: 174

Re: Can read video file from optical disk but cannot copy it to hard drive

there are some video players that allow you to playback and record at the same time (vlc for example).

Since you mentioned you can still play the video, then you ought to be able to record the video somewhere else, effectively making a copy of it.

I'm not familiar with gnome-mplayer though.

teckk

Member

Registered: 2013-02-21

Posts: 519

Re: Can read video file from optical disk but cannot copy it to hard drive

cp: error reading '/run/media/alex/DVD1/video.mkv': Input/output error

Permission problem?

ls -l /run/media/alex/DVD1/video.mkv

You might also use the complete out path

cp /run/media/alex/DVD1/video.mkv ~/Videos/

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 19,769

Re: Can read video file from optical disk but cannot copy it to hard drive

It would not seem so, but is there any chance the disk is protected with CSS?

As an experiment, try dd if=/run/media/alex/DVD1/video.mkv of=/dev/null
Should that work, try dd if=/run/media/alex/DVD1/video.mkv of=~/Videos/video.mkv

Obligatory note on dd.  It has not earned the nickname Disk Destroyer without reason.  The usage I provided is benign, but always, always be careful with dd and re-check your command line at least twice.

---

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way

AlexJ136

Member

Registered: 2013-08-06

Posts: 2

Re: Can read video file from optical disk but cannot copy it to hard drive

Tried all of the above, ddrescue was the solution that worked for me.