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View Full Version : Changing AR from 4:3 to 16:9


jv_guano
27th February 2006, 15:37
hi!

I've got a video streaming of a live concert that has a ratio of 4:3.

My TV is a 16:9 screen, and I'd like to see that live in 16:9; I must also highlight that, that video has black stripes on the bottom&top.

Obviously, if I set 16:9 on my TV , people get widened and look horrible

so, is there a way of cutting that balck stripes and get a 16:9 video?

it's really a pity that there's no more the guide to Aspect Ratio, also beacuse with all those 2.35:1 , 1.85:1 , really, I don't know very well how it works..

I downloaded also Aspect, but it's a pain for me to understand how it works without a basic guide on how aspect ratio works...
(for example,I cannot understand why 2 different video, with the same pixel resolution, can have one 4:3 AR, and the other 16:9 ...:confused: )

I post also an image of that video..
thanx!

http://img219.imageshack.us/img219/3293/vlcsnap2613203ln.th.png (http://img219.imageshack.us/my.php?image=vlcsnap2613203ln.png)

Daodan
27th February 2006, 16:25
I your case the solution is simple, crop the black borders. Of course to actually do that you have to reencode it. Download avisynth and take a look in the documentation, you'll find all you need there about cropping. This of course in case your video is not anamorphic (and by the look of that resolution I say it is). This also answers your other question: how can the same res look different: anamorphic encoding (let's say it simply that the pixels are stretched not square).
I don' have time now to explain all of these but using search will probably lead you to a lot of similar topics.

Later edit: it seemed to me res was 720x576, in your case anamorphic has nothing to do with it: just crop it as suggested first.

jv_guano
27th February 2006, 22:29
Thanx a lot for your reply!

and what about using Aspect (http://aspect.fre3.com/)?

Daodan
28th February 2006, 11:10
Well, it looks like a nice program to help you with the task of cropping etc, and avs generation. I usually use Gordianknot for this since I'm already used to it.

SeeMoreDigital
28th February 2006, 21:31
Do you wan't to re-size and re-encode back to MPEG-2, or do you want to encode to MPEG-4 (XviD, DivX etc)?


Cheers