Resizing 640x448 (game footage)

Bushido Philosopher · Post by **Bushido Philosopher** » Tue Nov 26, 2002 5:53 pm

What would be a good resize for this frame size? This is from a game rip so that's why it has a weird aspect ratio.

If someone knows how to figure out frame sizes to smaller or larger then please tell me how.

Thanks everyone.

ErMaC · Post by **ErMaC** » Tue Nov 26, 2002 7:32 pm

Er, why not leave it that size? both resolutions are divisible by 16, so you're not gonna have half macroblocks or anything, it should work fine. Am I missing something here? Or are you encoding this for distribution?

If so you could resize to like 480x336 as that's maintains the exact same aspect ratio as 640x448...

Bushido Philosopher · Post by **Bushido Philosopher** » Wed Nov 27, 2002 2:14 am

ErMaC wrote:If so you could resize to like 480x336 as that's maintains the exact same aspect ratio as 640x448...

Yah, that's kinda what I was goin for. 480x336 huh?

how do you resize staying in the same aspect ratio anyway?

RadicalEd0 · Post by **RadicalEd0** » Wed Nov 27, 2002 2:25 am

you take 480 divided by 336 and make sure the answer is the same as 640 divided by 448 ;P

Bushido Philosopher · Post by **Bushido Philosopher** » Wed Nov 27, 2002 8:09 pm

RadicalEd0 wrote:you take 480 divided by 336 and make sure the answer is the same as 640 divided by 448 ;P

damn, that's a lot of trial and error....

RadicalEd0 · Post by **RadicalEd0** » Thu Nov 28, 2002 12:02 am

nah not really

klinky · Post by **klinky** » Thu Nov 28, 2002 6:37 am

<a href="http://klinky.home.attbi.com/MisatoAspe ... eencap.jpg[/img]</a>

com'on you know you want to click on it

~klinky

RadicalEd0 · Post by **RadicalEd0** » Fri Nov 29, 2002 4:48 pm

I was working on an all-in-one aspect ratio/resolution swiss army knife that let you put in say a fractional ratio like 4:3 and the total pixels and get the res, the decimal ratio like 1.333 : 1 and get 4:3, change pixel aspect ratio and see all the changes visually too. It was pretty cool, although really just a toy, anyway I'll finish it sometime when I feel like wasting more free time looking up stuff that we dont learn until the last chapter of BASIC at school :P

RadicalEd0 · Post by **RadicalEd0** » Fri Nov 29, 2002 4:51 pm

this is pretty nify though

klinky · Post by **klinky** » Fri Nov 29, 2002 5:15 pm

It was pretty funny making it. It worked fine for something easy liked 4:3 640x480, but it choked on the 640x448 listed here.

Problem was I was converting them to integers to soon.

All calculations are done with double precision floats(decimals, whatever), then converted to integer on display ^_^ Ahh yes, that fixed the problem.

I was thinking of doing something like "oh it's 4:3", but I would have to have a list of standard aspects'. The best way I could think of doing this is making a conversion list. So that if the aspect = 1.333333, it looks in the list, compares, if it finds a matching entry like "1.333333 = 4:3" then it would print out "4:3" instead of "1.333333".

I don't think there is any actual algorithm you could create that would produce the type of aspects we would like to see. Such as 4:3, could also be shown:

1.333333:1
2.666666:2
4:3
5.333333:4
6.666666:5

Which one does the program choose ? How would it know which one is correct, well they're all correct, just which one is everyone used to seeing? The program wouldn't know unless you told it :\ I guess you could also tell it to choose the first ratio were both numbers are not decimals

^_^ WHoa! That may just work ^_^

~klinky