This is what I am getting at. If data is different in the way it is burned and read then the tests performed should indicate whether they burned a video or data DVD. A lot of people present these fabulous burns in CD Speed and Kprobe etc but they don't say what was burned, usually don't burn to the maximum amount and don't mention with what software they burned it.
There should be a standard format for presenting ones 'tests'.
Anyhow I might have to do a test burn of video data on those Datawrite Grey I have been having trouble with and do another scan. All the bad discs I have burned thus far have been with ISO mode data (Although I did do one UDF data disc).