MDisc scanning quality: jitter, PIE, PIF?

[gamemaniaco]

MDisc DVDR presents degradation jitter, PIE, PIF, POF every year? MDisc Is same DVDR organic dye?

[lordsmurf]

These cost too much, so I've not scanned many of them for that reason.

The results are no better than good media like Taiyo Yuden or MCC/Verbatim, or worse than bad media like Princo or UmeDisc. It's just an okay disc, like Fuji Oxonol based Ritek.

The jitter is usually decent/acceptable, and then PIF and PIE are a little more spiky and overall higher than I'd like. Like I said, no worse than modern Ritek based on the Fuji dye, but not as good as Verbatim and older defunct media (2x TDK, 2x-4x MXL, 2x-4x PVC, etc).

Jitter doesn't really degrade. What you have to watch for is the PIF and PIE.

PIF is failures, PIE is errors. Those can and will grow as the elements (light, humidity/moisture) take their toll on the disc.

The "100 years" nonsense is just that -- nonsense. Especially for your "living in the Brazilian beach+forest" situation.

My advice = don't buy them. Use MCC, burn duplicate, store safely, test annually, and go on about your day.

This needs repeating: I have more issues with pressed discs than burns. And there is science that backs up the idea that burned discs will last longer than presses. I've seen lots of empirical evidence over the years that is leading me to the conclusion (after 10 years of casual research) that the hypothesis (theory? I forget) is/was sound. Indolikaa and myself used to discuss it on VH.

[gamemaniaco]

1 I bought and burned some units of mdisc verbatim dvdr but my doubt is if in mdisc the PIE, PIF, jitter will increase with the passing of the years equally to dvds that use organic dye

2 look at the photo of this case: http://www.vitmax.com.br/img/1547.jpg, I hold the disc by the edges I place the disc on top of the case pin (PUSH) and press the (PUSH), sometimes the disc slides friction a little on the top of the pin (PUSH) to fit this slide Can you scratch the mdisc?

[lordsmurf]

It'll be fine. You simply spent about 4x more for the same quality as you can already get.

The dye in MDisc is what allows the claim for 100 years, but the bonding/glues will always be the weakest link of discs. It's simple not going to last that long, especially in more humid areas.

I told you some time back that 15-30 years is probably a good conservative estimate, and my opinion is unchanged. Optical media in optimum conditions is 30-65 years, just like tape. Since you live in a forest on the beach, I'm guessing about half the lifespan for you. In the 2030s and 2040s, we'll probably have new mediums, assuming humanity survives idiot politicians.

Those cases look fine to me. I use them too.

Any disc will scratch. Be careful. If you scratch a disc, burn a new copy.

[gamemaniaco]

1 in another topic I asked you if my verbatim azo disk will live 15-30 years in my storage conditions and I posted photos of the test high jitter, high pie, high pif but you did not see the photos and did not answer the other topic

2 Did you see the picture of the case? Is this case prone to scratching the disc? I put the disc on top of the case pin and I press the center of the disc but sometimes the disc makes a small movement slide to fit the pin, does that slide scratch the disc in the case? Dvdr verbatim mdisc has some scratch protection to prevent data loss and error reading

3 The mdisc glue and polycarbonate is patented by millenniata and are better than the common ones, I asked them at millenniata's website

[lordsmurf]

- I want to reply at greater length on the Verbatim topic. Not had time yet.
- I saw the image, I think the case is fine.
- Glue is glue. Plastic is plastic (polycarbonate). Patents won't change fundamental characteristics of those materials.

[gamemaniaco]

1 please reply to another topic
2 is there a risk of scratching mdisc when inserting this photo case?
3 I do not know but tests done with mdisc showed that the glue and polycarbonate are more resistant

[lordsmurf]

- I will answer it later.
- Yes. Risk for scratches always exists with everything used to store discs.
- I don't really care what the manufacturer says. Every manufacturer makes claims of "best ever".

[gamemaniaco]

1 In this type of case that I posted the photo what is the best way to keep it without scratching?

2 I store the disk and there are fingerprints in the center of the disk, is this bad for long term storage?

[lordsmurf]

You don't want fingerprints -- aka skin oils. Wipe those off.

[gamemaniaco]

The fingerprints are not under the disc only edge glue and center

[lordsmurf]

In that case, not a huge problem. Be sure your hands are clean, dry, and you can even consider those cloth photo gloves if you want. I use those myself, when handling lots of discs (or photos, or even collectible action figures).

[gamemaniaco]

I washed my hands to handle the disc but the fingerprint was in the center of the disc but I did not touch the disc's read layer

The test scores of the dvdr mdisc verbatim were 95 and 93

1 Does the dvd / cd / mdisc dvdr have any resistance and security of flexibility? If the disc flexes slightly when putting in the case will damage serious the disc?

2 I understood that I should worry about PIE, PIF degrade not jitter, on the DVDR M-Disc PIE, PIF will degrade over the years in the future making the M-Disc unreadable?

[lordsmurf]

I wash hands all the time, especially before I eat.

It's been a while since I was in school/college. My test scores were usually pretty good.

Discs are not flexible. They're plastic, not rubber.

Mmmm... pie. Pecan is best.

But seriously, you already asked much of this, and already been given the answers. To reply to one tidbit, yes, increased PIE/PIE means increased chances of the disc being unreadable either in part or in whole.

[gamemaniaco]

1 i tested dvdr mdiscs jitter, pie, pif and result score 93 and 95 in nero discspeed 5, this score is good or bad? i used drive liteon-ihas122-14 FU

2 jitter increase every year? jitter degrade or not?

[lordsmurf]

I've never observed major jitter shifts, no.
Scores are relative, and unfortunately fairly meaningless on their own.

[gamemaniaco]

Quote:

Originally Posted by lordsmurf

I've never observed major jitter shifts, no.
Scores are relative, and unfortunately fairly meaningless on their own.

What is the analysis of these mdiscs that I burned in 4x (single speed available)? scores 93 and 95 score good or bad?