Resize horizontal resol. to 360 or 384?

[bananacreamandpeca]

I have this VOB file wich displays as 4:3.
BSPlayer says it's:"720x576, Aspect: 4:3 (768x576)"
When I make a snapshot with VLC the resolution is: 768x576
When I make a snapshot with vdubmod, the resolution is: 720x576
???

Why is this? Does vdub crop a little on both sides of the Video?

And if I want to half the size of the video,
wich resolution do enter in the script,
360 or 384 for the horizontal res.?

[DarkZell666]

The number of pixels on the frame is 720x576, but DVD's are anamorphic, so the picture is stretched during playback to make the visual proportions correct (which explains why VLC gives you 768px large picture). You can see that in vdub the picture is slightly wierd-looking (e.g. stretched faces). Vdub doesn't do any aspect-ratio correcting and shows the video "as-is".

Simply resize to anything which gives a 4:3 aspect ratio (640*480, 576*432, or 512*384 in your case).

[movmasty]

The number of pixels on the frame is 720x576, but DVD's are anamorphic, so the picture is stretched during playback to make the visual proportions correct (which explains why VLC gives you 768px large picture). You can see that in vdub the picture is slightly wierd-looking (e.g. stretched faces). Vdub doesn't do any aspect-ratio correcting and shows the video "as-is".

Simply resize to anything which gives a 4:3 aspect ratio (640*480, 576*432, or 512*384 in your case).

to use these res he should crop to 704 before, as the mpeg frame is 704 and differs from the dvd frame, that is not 4/3.

in fact the mpeg-pal correction factor is 11/12, that applied to vert res gives 528,
that is 4/3 with 704, not with 720

[movmasty]

And if I want to half the size of the video,
wich resolution do enter in the script,
360 or 384 for the horizontal res.?
tricky question,
as you should have noticed, the mpg1 vids, that are exactly half resolution, are 352x288,
this comes out by cropping 720 to 704 then halve both resolutions,
but doesnt correct the wrong aspect ratio of pal when played on pc,
to correct it you have to set hor res to 384, always cropping to 704,and this is very good, since dvd is not vhs, and has full hor res, where vhs has only 320 pixels.

if you dont like, for every reason, to crop the vid, then you could enter 360, and if you want to correct the ar to 392,7(exactly:D)

BUT both 360 and 392 are not 'module 16' that could be a problem when encoding in mpg1.

AND notice, if you play this movie of 360x288 full screen stretching to screen, it wont be of the correct AR.

[bananacreamandpeca]

darkzells answer made sense to me.
if I make an avs-script for any GUI or for vdubmod
I should take the AR the way AVS looks at it right?
Wich means just the way like vdub presents it (I think)

But if the AR-story that more tricky, I will read and try to see if I understand any of it,
you said. thanks movmasty!