- Dec 1, 2005
I noticed that as well. I'm not keen on dropping $10 to find out though. Theories: anamorphic encoding? Letterboxed (shudder)?vikas soni said:I was just browsing through the new iTMS and noticed this:-
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How can they claim it to be Widescreen and on the other hand claim the resolution be 640x480. Can someone tell me what resolution will such supposedly WideScreen movies sport. will it be 640x400 or 720x480???
Previously for TV shows it was the other way around widescreen meant keep 320 horizontal, less vertical.esaleris said:Maybe it's just always 480p (480 lines of resolution horizontally) regardless of the width of the movie.
The trailers seemed to be linked to separate files - that is they're not like the TV show trailers where it's just a clip, it's the theatrical trailer. For example, check out Grosse Point Blank (great movie)... the trailer is a 4:3 video but the movie is listed as being widescreen.EssentialParado said:Can't someone just watch a trailer? (Are the trailers in the high-res?)
I can't watch them as I haven't installed the new QT yet.
DVDs use anamorphic encoding, so they use the full 640x480 pixels of resolution for widescreen video. I don't feel like typing it all again, if you want an explanation of anamorphic encoding search for recent posts by me. Point is that a 640x480 NTSC file can be "tricked" into holding full resolution widescreen video.MarkCollette said:It's the same thing with DVDs. The video is NTSC quality (640x480). But you'll only get that resolution if it's "full frame". If you have a widescreen video, then you'll get less vertical resolution.
And no, they don't encode the black bars in the video, that'd be a waste of disk space. But yes, when that video plays, it'll probably show black bars. Depends on your screen.
That's 'cause DVDs native resolution is actually 720x480.mrgreen4242 said:Point is that a 640x480 NTSC file can be "tricked" into holding full resolution widescreen video.
Sorry. That link doesn't have it, but this one does. http://en.wikipedia.org/wiki/DVD-Videomrgreen4242 said:
You're getting confused by the fact the the DVD format is optimized for widescreen and is compressed horizontally for display on standard SDTV 4:3 displays.The typical video resolution for an NTSC disc is 720 × 480, while a PAL disc is 720 × 576. The specifications for video files on a DVD can be any of the following:
* Up to 9.8 Mbit/s (9800 kbit/s) MPEG-2 video
* Up to 1.856 Mbit/s (1856 kbit/s) MPEG-1 video
720 × 576 pixels MPEG-2 (Called full D1)
704 × 576 pixels MPEG-2
352 × 576 pixels MPEG-2 (Called Half-D1, same as the China Video Disc standard)
352 × 288 pixels MPEG-2
352 × 288 pixels MPEG-1 (Same as the VCD Standard)
720 × 480 pixels MPEG-2 (Called full D1)
704 × 480 pixels MPEG-2
352 × 480 pixels MPEG-2 (Called Half-D1, same as the China Video Disc standard)
352 × 240 pixels MPEG-2
352 × 240 pixels MPEG-1 (Same as the VCD Standard)
I'm pretty sure that NTSC ONLY allows for a 4:3 signal, and DVDs are fully NTSC compliant. 4:3 with a 480 pixel height is 640 wide. Non square pixels are used to get a 720x480 video signal in there, though, which is part of the spec, which I think is what is confusing... this site explains it in pretty decent plain language: http://www.dvddemystified.com/dvdfaq.html#3.4.1balamw said:
Yes, but NTSC is an analog spec, and thus the horizontal resolution is effectively unlimited. (it knows nothing about pixels, only scanlines).mrgreen4242 said:I'm pretty sure that NTSC ONLY allows for a 4:3 signal
Ug, I just had a whole long post written, but I deleted it, this is stupid. The DVD spec is terrible. It calls for a 1.5:1 file, but mastered to work on a 1.33:1 display. In turn, DVDs take a 1.78:1 image, squeezes it to be a 1.33:1 images, which is then encoded to a 1.5:1 file.balamw said:Yes, but NTSC is an analog spec, and thus the horizontal resolution is effectively unlimited. (it knows nothing about pixels, only scanlines).
Have a look at this link, which tells you how to do the anamorphic squeeze on your analog SDTV to get higher horizontal resolution from your DVDs.
Grrrr.. Cant believe it. So Apple is now trying to sell 270p movies as 480p one. Compared to regular Widescreen DVDs it`s half the resolution. Do they call 50% resolution as nearly DVD quality.Bibulous said: