feature request: skip bad sectors

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ocmyhome
Posts: 2
Joined: Sat Oct 08, 2016 6:06 pm

feature request: skip bad sectors

#1 Post by ocmyhome » Sat Oct 08, 2016 6:09 pm

I don't see this option currently for the MakMKV and ripping a blu ray, but it'd be nice to have the option to skip a bad sector of the blu ray.

Woodstock
Posts: 10312
Joined: Sun Jul 24, 2011 11:21 pm

Re: feature request: skip bad sectors

#2 Post by Woodstock » Sat Oct 08, 2016 7:17 pm

Often asked for, but not likely to happen.

Players bypass defects in optical disks by software design. But I have not seen any players that would make that exception for a stream read from a file. I've tried it with several, reading from DVD ISOs that were generated with the "skip errors" option of the dd utility on Linux, and the players always stopped playing when they hit the defective area of the "disk".

yorgo
Posts: 357
Joined: Sun Jun 05, 2016 5:28 pm
Location: Left of Center

Re: feature request: skip bad sectors

#3 Post by yorgo » Sat Oct 08, 2016 8:23 pm

Woodstock wrote:...and the players always stopped playing when they hit the defective area of the "disk".
And for this reason I hope MakeMKV never offers this as a feature. I can only imagine the number of posts from novice users saying MakeMKV has a bug which produces unplayable files.

thetoad
Posts: 233
Joined: Thu Jul 28, 2016 4:18 am

Re: feature request: skip bad sectors

#4 Post by thetoad » Sat Oct 08, 2016 11:59 pm

Woodstock wrote:Often asked for, but not likely to happen.

Players bypass defects in optical disks by software design. But I have not seen any players that would make that exception for a stream read from a file. I've tried it with several, reading from DVD ISOs that were generated with the "skip errors" option of the dd utility on Linux, and the players always stopped playing when they hit the defective area of the "disk".
yorgo wrote:
Woodstock wrote:...and the players always stopped playing when they hit the defective area of the "disk".
And for this reason I hope MakeMKV never offers this as a feature. I can only imagine the number of posts from novice users saying MakeMKV has a bug which produces unplayable files.
I can't say I've done it with hardware players, but I've done it many times with software players and small unreadable areas are treated no differently than unreadable sectors on the DVD itself. They produced corrupted frames but then resume normal playback, see my comments in other threads.

Also skipping bad sectors is fine if one maps them and has the ability to fill them in later (again as per my other comments elsewhere).

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