DVDs. Interlaced or progressive?

[Alan Gordon]

Originally Posted by HeavyHitter

But, if the DVD source/disc is progressive 480p......why would you need to deinterlace it (when in fact we know you have to on film for better PQ)? If not, all it would need to do is pass it to the display (as BD does with 1080p/24, for example).

I'd like Kris to chime in on this.

Originally Posted by Kris Deering

DVDs are not authored as 480p, they are 480i. This is why an SDI output is 480i. They are flagged so that 480p can be derived but normally these flags vary in quality.

I am not aware of a single DVD to date that has video information stored at 480p. I'm not aware of a single DVD player to date that would be compatible with a native 480p signal on a DVD disc.

WHOA WHOA WHOA!!! WHAT?!

I'm sorry for going off-topic on your thread Penton, but my world has gone all askew!!

EVERYTHING I have ever read stated (as Wicky said) that all DVDs are recorded onto DVD in 480p! Non-progressive scan DVD players convert the 480p picture into 480i (I think via the DACs?) so that people can view the disc on their non-Progressive scan TVs.

Progressive Scan DVD players however allow one the option of outputting EITHER a 480i conversion (for those with 480i TVs) as well as the option of bypassing the 480p to 480i conversion allowing one to see the original 480p picture (for those with TVs that can accept it).

~Alan