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View Full Version : Getting slightly wrong aspect ratio out


DRP535
6th February 2007, 01:50
I'm converting a VOB video with AutoGK but keep getting a slightly wrong aspect ratio out. It is a 4:3 video. I'm using the hidden options to manually do a bit of cropping of black bars namely 4 pixels at the left and 9 at the right. The remaining video I want to be stretched to a 4:3 ratio. The trouble is that the correct input aspect ratio flags and AutoGK's own aspect ratio determination routines only decide what the aspect ratio is before the manual cropping. The end result is that no matter what I do, I always end up getting an aspect ratio of around 1.28 instead of the 1.33 wanted because of the bit of manual cropping on either side.

Is there a way to do the manual cropping first and then tell AutoGK the aspect ratio of what remains afterwards?

setarip_old
6th February 2007, 02:39
Hi!cropping of black bars namely 4 pixels at the left and 9 at the rightYou might want to try again, with the sum of the cropping equal to 16, instead of 13...

CWR03
6th February 2007, 08:12
Below the cropping there is an option to force a 4:3 (or 16:9) output. Have you set that?

AutoGK will not crop at odd numbers - you should find the even integer that best fits your needs and use that instead.

DRP535
6th February 2007, 09:53
Yeah I tried the force aspect ratio option but it makes no difference. I've got around the problem by just letting AutoGK create the AVI in the wrong aspect ratio and then correcting it afterwards by applying a display aspect ratio flag using MPEG4Modifier instead.