[Jasper Sanders]

Thanks for the heads up on RevoStock. It’s going to take a bit of searching, but this looks promising. Thanks!

[Jasper Sanders]

Hi, thanks heaps for your time. I really appreciate it.

But, I can’t seem to follow your concept in my head nor can I in AE. I’ve been trying for hours without result.

[Jasper Sanders]

OK, I’ve got AE now and I’m completely lost, lol… Point me in the right direction?

Thanks 🙂

[Jasper Sanders]

I’m not sure, I’ve not worked with AE before, nor do I own it obviously. I’ll try to pick up their trial tonight. I thought AE was more designed for doing special effects than accurate video resizing?

Also, in my last post, I obviously was meant to say “So essentially … pixel stretch of 960×720 to 1024×720.” (not that it really matters at this point. I just need to learn how to do any neighbor stretch.)

Cheers

[Jasper Sanders]

Also, I just remembered that I don’t necessarily need to crop the video, as I already have a pixel accurate mask overlaying the video (that I forgot I was using).

So essentially this is very simple. All I need to know how to do is a nearest neighbor pixel stretch of 720×576 to 768×576. (As I originally wanted… lol)

Thanks again,

Jasper

[Jasper Sanders]

Ok, I’ll just explain what I need done and hopefully somebody will know the best way to go about it. I’m adjusting some old pixelated animations I designed on a video game console (now emulated on the computer) to be used (letter boxed) in a 720p square pixel video.

Original output from console = 320×240 (square pixels)
I then upscale this (within the emulator) to = 960×720
(using a nearest neighbor type system giving perfect unblurred 3 times magnification)

This was then recorded with lossless screen capture to produce a 960×720 source video.

Now, in most cases, the actual desired viewing area is only 720×576. So the video needs to be cropped pixel accurately to this size. (120 off each side and 72 off the top and bottom.)

Now this is where the upscale also comes in handy.
The native output of the actual hardware on which it was designed (not the emulation) had a pixel aspect ratio that stretched the 720×576 to be 4:3. Now, obviously stretching it to a new PAR (according to my calculations 1.0666) will cause some very undesirable blur when it’s converted to 1:1. So the solution is to increase the width using a nearest neighbor resize to 4:3 (768×576).

This in effect will double every ~15th vertical row of pixels. Making the appearance of the stretching minimal, as the original “pixels” that are stretched are only stretched by 1/3.

This produces the cleanest sharp “pixels” and most accurate 4:3 output. I have done this with stills in photoshop and it worked flawlessly. I just need some help working out how to produce the same results on video.

A summary of what I need to do:

Losslessly crop 960×720 to 720×576
Nearest neighbor stretch 720×576 to 768×576

Thanks heaps,
Jasper