Screen Size

[Flying dutchman]

To say "The 576 pixels of vertical resolution are intended to fit in 3/4 of the screen " is not correct.
You either display the full 576 scan lines in anamorphic mode on a wide screen TV, or you reduce the number of lines to 432 and display it on a 4:3 TV, in which case it would indeed cover 3/4 of the height, with black bars on top and below.

Assuming square pixels on a PC monitor (whatever the height/width ratio of the screen, it needn't be 4:3) a width of 1024 would indeed be appropriate if you want to to avoid vertical scaling. The height of the screen needn't be 768. Some people DO have portrait-mode screens!

[dZeus]

...768 vertical assuming you're running a 4:3 monitor which is capable of displaying that res

though imho video content looks much better on a TV, and for anomorphic widescreen DVDs a widescreen TV obviously is optimal

[jimbo79]

More confused than ever..

Just all of you stoppit!!!!
I don't want to know any more.
what have I started?
I'm not asking anymore questions.....

[Technoid]

I will take this again.

Slowly.....

The physical dimensions of the mpeg stream was (and is) 1024*576!!

That I originaly claimed the size to be 1024*768 was a short circuit in my brain.

My screen size is 1024*768!

The fact that the horisontal amount of pixels is the same in both the mpeg stream and my screen resolution is pure coincidence!!

[dZeus]

Technoid, please download this util:

http://www.doom9.org/Soft21/mpg/DVD2AVI_176.zip

and open one a VOB files you ripped from the CD... in the title bar it will show you the resolution used for the video stream.

[Technoid]

I realy wish that we had the message "smilies" available as message "icons"....

I already have that prog.....

it says 720*576 (16x) (32X)

Still not conclusive as it could be thinking "Stream should be *X* max, therfoure I shall report as my programing dictates..."


If the program is corect then there is no special resolution for 16*9, only crazy squashed pictures...

[dZeus]

that's what we've been saying all along

an Anomorphic VOB file just contains a different aspect ratio flag, i.e. 16:9 in stead of 4:3 (and of course the aspect ratio of the stream itself also is different, to get proper aspect ratio when played back at 16:9 ).

(btw. a 4:3 movie also is 'squashed', since the pixels in the steam aren't square, since all horizontal image information is just spread over the whole scanline on a TV, since a TV doesn't use pixels but only lines).

[Flying dutchman]

Exactly.
Similarly, a SVCD (PAL) Mpeg file has a resolution of 480x576 but also carries a 4:3 flag in the MPG headers. The DVD player then stretches the image so it still looks normal! It's really all a matter of non-square pixels...