I’ve been noticing, and just read a statement by someone that writing near the outer rim of DVDs gets more problematic. I noticed that many of the media test show degradation near the end, and also in my own tests that is usually the case.
Isn’t the write speed equivalent across the whole disc? Wouldn’t the coating on the media be pretty much equal all over? So why is there so much degradation usually near the end? It seems this usually happens on lesser quality media. I see sometimes the beginning is pretty nice and clean and as soon as you get to like 80% everything quickly goes downhill sometimes leading to even data errors. Even when the disc is scanned at a constant speed all across!
Hope someone understands this phenomena and can explain it…