Triying a first hand disk that has never been used. Made a MKV with no problem. Tried again and it gives me errors

[baronluigi]

I have an Asus BD12D2HT connected through a usb cable and an external power supply. I bought it back in 2016 and I have not used it so much compared to my other DVD drives.

I made a MKV from the Spanish Bluray of THE BIG BLUE, released by Divisa Media back in 2016. I did it without problem but when I tried to create another one just with DTS sound (the other one had the spanish track in DTS-HD), it gave me read errors. The same happened when I tried to rip the entire disc.

It could be a mastering error, due to Divisa uses low quality printed discS. However, I just realized that I had qutorrent active, downloading stuff, this second time.

Could this affect to the ripping? Thanks.

The disk is brand new. And I really mean it. It has never been out from its box until I decided to rip it today.I have never used it in my bluray players either.

[GoodBoy]

Discs can be defective. I also think they have a shelf life.

I have had brand new still sealed blurays that would have rip errors. Most common is a thin film of some chemical that leeches out of the bluray case and settles on the disc. It appears as a splotchy spot on some part of the disc. Cleaning the disc with a disc cleaner (a spray that comes with a soft lint free cloth) fixes those right up (usually).

Other times there is no visible contaminants, fingerprints, but the disc still has a read error.

I primarily use LG drive to backup discs, but also have a Pioneer that is a little better at reading the finicky discs. But it has only succeeded a few times when the disc had read errors in the LG, and that is out of hundreds of discs. Sometimes you just have to replace the disc.
If you buy discs on Amazon, be sure to back them up within a week or 2 of receiving it so that you are within the return/exchange window.

I do the full disc backup, I don't use makemkv to rip to mkv or extract specific tracks... it sounds like your first extract didn't need to access the unreadable spot, but the full backup does. So check the disc to see if it has a fingerprint or needs cleaned. If its good to go, you need to exchange it.

Edit: As far as failure rates go, I think about 1 in 100 discs I run into a read error, maybe less. Out of those, 50% are resolved with a cleaning of the disc. Sometimes even when they look ok, cleaning helps. Out of the remaining discs with read errors, the disc just has to be replaced. I had 1 that I can remember that the pioneer could read that the LG coudn't, out of say maybe the last 8 discs with read errors, during the timeframe where I have had both the LG and the Pioneer drives. Since getting the Pioneer drive, I've probably backed up 200 to 250 discs. 8 had read errors, 6 old dvds, 2 blurays. 1 bluray the pioneer could read. The other was simply a bad disc, it had read errors in the Pioneer also. The 6 dvd's all had something leeched onto the discs, and it was stubborn to clean off, much moreso than is typical with blurays. Cleaning fixed 1 of the discs but not the other 5. These were from a still sealed box set. This is more than 1% but I have backed up lots more with just the LG, and 1% (initial disc read error rate) is typical.
The dvd box set, I think it being still sealed contributed. It was a season of a tv show bought in 2006, so sealed for 18 years. The opened seasons of the same show didn't have contaminants on the discs like the sealed set had. It's likely a more rare situation.

[baronluigi]

Discs can be defective. I also think they have a shelf life.

I have had brand new still sealed blurays that would have rip errors. Most common is a thin film of some chemical that leeches out of the bluray case and settles on the disc. It appears as a splotchy spot on some part of the disc. Cleaning the disc with a disc cleaner (a spray that comes with a soft lint free cloth) fixes those right up (usually).

Other times there is no visible contaminants, fingerprints, but the disc still has a read error.

I primarily use LG drive to backup discs, but also have a Pioneer that is a little better at reading the finicky discs. But it has only succeeded a few times when the disc had read errors in the LG, and that is out of hundreds of discs. Sometimes you just have to replace the disc.
If you buy discs on Amazon, be sure to back them up within a week or 2 of receiving it so that you are within the return/exchange window.

I do the full disc backup, I don't use makemkv to rip to mkv or extract specific tracks... it sounds like your first extract didn't need to access the unreadable spot, but the full backup does. So check the disc to see if it has a fingerprint or needs cleaned. If its good to go, you need to exchange it.

Edit: As far as failure rates go, I think about 1 in 100 discs I run into a read error, maybe less. Out of those, 50% are resolved with a cleaning of the disc. Sometimes even when they look ok, cleaning helps. Out of the remaining discs with read errors, the disc just has to be replaced. I had 1 that I can remember that the pioneer could read that the LG coudn't, out of say maybe the last 8 discs with read errors, during the timeframe where I have had both the LG and the Pioneer drives. Since getting the Pioneer drive, I've probably backed up 200 to 250 discs. 8 had read errors, 6 old dvds, 2 blurays. 1 bluray the pioneer could read. The other was simply a bad disc, it had read errors in the Pioneer also. The 6 dvd's all had something leeched onto the discs, and it was stubborn to clean off, much moreso than is typical with blurays. Cleaning fixed 1 of the discs but not the other 5. These were from a still sealed box set. This is more than 1% but I have backed up lots more with just the LG, and 1% (initial disc read error rate) is typical.
The dvd box set, I think it being still sealed contributed. It was a season of a tv show bought in 2006, so sealed for 18 years. The opened seasons of the same show didn't have contaminants on the discs like the sealed set had. It's likely a more rare situation.

Thanks for the advices. In this case, my suspects were right. It was due to qbitorrent beging active downloading stuff, while ripping. At the same time, my Hard disk was more full than usual. I just erased some hundreds of GB and tried ripping the DTS version again. No problem at all. In fact, I got speeds like 32 MB/S. This computer I am using now is one I had built up. It has a 1 TB SSD Drive in it.

I will try ripping the entire BR in the near future. I guess that I won´t have any problem at all (I tried to rip it previously with QBITORRENT active and I had reading errors).