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Discussion Starter #1
first post,


what resolutions are dvd encoded in. i understand that they vary, but most of them are in 480p or are they not even progressive? are there dvd's that are encoded in HD resolutions? if so how common are they?
 

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dvds are 720x480...the hi-def dvds you talk about are WMV-hi-def dvds..theres 3 currently in this format,with more to follow suit..big thread in htpc section if you're interested.


brickie
 

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stokey7873:

Yes, welcome!

One other consideration for image quality of DVDs is the bit rate where a higher bit rate for a given resolution (NTSC or PAL) should look better. Of course, there are numerous other factors that effect PQ beyond resolution.
 

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It should be pointed out that although stored as frames the content of the frames are vertically filtered for interlace display. If they weren't a DVD displayed on a standard NTSC TV would flicker terribly.


So, really, an NTSC DVD is two 720x240 fields combed together. And the mistakes encoders sometimes make, is what makes de-interlacing trickier than it seems.


The loss of vertical resolution has been estimated by Joe Kane to be as high as 30%. And de-interlacing can't restore lost information.


Joe Kane's Digital Video Essentials calibration disc is currently the only DVD that is progressive encoded (no filtering).


This is why so many are demanding a 1080p HD-DVD encoding standard. Let the player worry about the filtering. The content should be as high quality as possible.
 

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Discussion Starter #7
so they are encoded interlaced and then are scaled to progressive or just pumped out interlaced? i always thought they would be progressive NTSC or PAL which was why dvds were better quality. feels like i'm taking steps backwards in my understanding.
 

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My DVD recorder does the nice 704x480, so I have to watch the resolution when editing my home movies :D
 

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dialog_gvf

Joe Kane was not able to get anyone to encode Digital Video Essentials in 480p. Many promised, but none were able to deliver. It is an interlaced DVD.


I don't know the current status, but he is trying to get a WM9 version of DVE on DVD.
 

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Quote:
Originally posted by brickie
dvds are 720x480...the hi-def dvds you talk about are WMV-hi-def dvds..theres 3 currently in this format,with more to follow suit..big thread in htpc section if you're interested.


brickie
Oooh OOOh what are they? I know about the T2, what are the other 2? (if T2 is one of the ones you are talking about)


Also, the Criterion site says they are releasing a few new titles that were 'scanned in HD' (Charade for one). What exactly does that mean? Does anyone know?


Tony
 

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Quote:
Originally posted by dialog_gvf
It should be pointed out that although stored as frames the content of the frames are vertically filtered for interlace display. If they weren't a DVD displayed on a standard NTSC TV would flicker terribly.
Wasn't this proven to be a non-issue?
 

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Quote:
Originally posted by tandersn


Also, the Criterion site says they are releasing a few new titles that were 'scanned in HD' (Charade for one). What exactly does that mean? Does anyone know?


Tony
Criterion is definitely gonna get me killed if the new Charade release is just the beginning of more re-issues that replace letterbox for anamorphic transfers. I'm gonna have to duplicate my current Criterion copy for this one and the wife will go ballistic. :D


edit: Oh yeah and...

http://www.silverknightprm.com/press...ritchilean.htm

http://www.kodak.com/US/en/corp/pres...80624-02.shtml

http://www.cinematography.net/Teleci...20overview.htm



Those links will help you understand.
 

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Quote:
Originally posted by RBO
Criterion is definitely gonna get me killed if the new Charade release is just the beginning of more re-issues that replace letterbox for anamorphic transfers. I'm gonna have to duplicate my current Criterion copy for this one and the wife will go ballistic. :D


edit: Oh yeah and...

http://www.silverknightprm.com/press...ritchilean.htm

http://www.kodak.com/US/en/corp/pres...80624-02.shtml

http://www.cinematography.net/Teleci...20overview.htm



Those links will help you understand.
For newer films they are going the Digital Intermediate route. A one time

scan to serve all output formats.

http://www.cinesite.com/?1221&0&3821


b2b
 
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