View Full Version : Rotation problem... unexpected distortion
August 10th, 2008, 08:28 AM
Hey there ^^
The format of my composite is "PAL D1 Anamorphic" (so the pixel aspect ratio is 1.42) and to ensure my imported footage is the right proportions, it is in the "PAL D1 Anamorphic" format too. The matter now is that when I rotate my footage layer, the layer gets distorted... In a square pixel aspect ratio for both the footage layer and the composite, there's no problem when i rotate the footage layer. But I'm in a PAL D1 Anamorphic format... and must stay in this one so... (rem: the right click method in the viewport checking/unchecking the "use aspect ratio" line doesn't help)
Does anyone can help? Thanks :)
August 10th, 2008, 09:38 AM
the progrem comes from pixel aspect, in shake you can use rotation with custom aspectratio, or you need to change your default pixel aspect, for NTSC it is 0.5
August 10th, 2008, 10:51 AM
Thx for the reply. Unfortunately I don't know shake at all (and haven't got it :s) and I haven't enough time at the moment to learn a new software... and I can't change the format to NTSC so... but thanks anyway ;-)
August 10th, 2008, 04:07 PM
you don't need to change it, set your composition aspect to : 1.422,
August 11th, 2008, 06:45 AM
as frost07 wrote, if you have set your footage to pal anam. AND your (all) comp to pal anam. then it will rotate as you'd expect it. also, be sure that your footage is really of anamorphic origin.
August 11th, 2008, 08:47 AM
Thanks both for your replies :-) ... well I tried what you said but it doesn't work :s. Here are the workspace file and the picture concerned... there's only one image as footage in the file so it makes it be clearer... The picture is of anamorphic origin so... I can't figure out the problem... The file is 2 frames long so you can check the result with/without the rotation. If my file works perfectly at your's (no distortion problem) then I don't know what to do lol. (I use Combustion 2008)
August 11th, 2008, 09:18 AM
your composition setting is wrong. pal anamorphic is 720x576 and 1.42 pixel a/r.
or, if you like to have a square pixel output it's 1024x576 and pixel a/r 1.0.
edit: and taking a second look at your clock input image, well, it has square pixel.
August 11th, 2008, 09:39 AM
I feel confused then as my teacher want the 1.42 pixel aspect ratio of the PAL D1 Anamorphic format but with the 1024*576 dimensions... I've sent an e-mail to my teacher but I don't know if he will reply :s...
I tried with the 720*576 but the result is the same... However your right the picture has square pixel... I thought that photoshop would save it as of anamorphic ratio as I chose the anamorphic ratio in "Image -> Pixel aspect ratio" but indeed it seems not saving the new ratio value :s...
August 11th, 2008, 09:52 AM
well, it works here.
set your fotage pixel a/r to 1.0. set your comp setting to pixel a/r 1.0 IF you want to stay with 1024x576. once again, PAL anamorphic is 720x576 and pixel a/r 1.42. IF you want to output to this format change horizontal resolution to 720 and keep 1.42. in both cases the rotation is correct. -although in later case, use right-click and "use pixel aspect ratio" to VIEW in square.
August 11th, 2008, 11:39 AM
Thank you for your help. My teacher just answered exactly the same thing (he replied :))... indeed I tried the "use aspect ratio" when I was in 1024*756 but as it wasn't working I thought it was due to smthg else... but I didn't click on "use aspect ratio" in the 720*576 dimensions so I was thinking "the proportions aren't right, it isn't long enough"... now I've just understood the whole thing :D
thanks a lot ^^
August 11th, 2008, 12:11 PM
* For people having the same problem than I had : what we see in the view with "use aspect ratio" clicked on is not what we can see in the render, as "use aspect ratio" only affects the viewport... you need to customize the dimensions of the render in the render window... this is where i had to choose 1024*576 :)