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Re:Resolution loss ??

Posted by: Anonymous Coward on March 30, 2006 04:34 AM
Is there another route that will preserve the original resolution (PAL/NTSC)?

I have 1920x1200 on my desktop screens and I dont want to lose any valuable resolution when ripping / encoding the original material.

Considering that DVDs are encoded at a maximum of 720x480 (or 720x576 for PAL) you are not going to "lose valuable resolution" since you're already scaling up to fill your 1920x1200 monitor anyways. Higher resolutions are only available on HD media which is basically non-existent at the moment.

Recoding is indeed a lossy process but it won't change the actual resolution of the picture at all unless you specify you want to scale it down--your recoded video will come out at the same 720x480 it comes of the original disc.

The lossy part is in the artifacting that comes out of the recode. you'd notice basically no difference in "talking head" shots or other scenes that are mostly static imagery, but in other cases it might be momentarily distracting (fast action scenes, scenes with a lot of darkness or large areas of mostly the same colour--particularly on a monitor with the brightness and contrast set at extremes). I'd describe it as "chunky blotches" that flash into view.

I wouldn't waste your drive space saving ISOs or full-sized VOBs of all your movies except for movies that you're passionate about, or movies that would be prone to the artifacting caused by more aggressive compression (a lot of Disney-style cel animation or any Star Wars movie basically). Your DVD-sets of favourite TV shows aren't worth wasting the space, even if hard drives are cheap.


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