I have just discovered that a 2 year old home recorded DVD of the favourite British TV series 'Hitchhikers' Guide' is useless. I have also discovered a thread about disk problems from 2006.
To lose stuff after only 2 years is quite a shock, and I guess the disk quality has a lot to answer for. VOB number 7 appears unrecoverable with a CRC read error.
In it someone mentions burn speed. How critical is this and is it really worth the painful wait to slowburn to get longer lasting DVDs?
How do commercial products achieve 'longevity'?