Changes to pixel aspect ratio in photoshop does not show in other programs
I've got a freeze frame image from a video that i've been editing. The image originally looked squished, so i changed the pixel aspect ratio from Square to D1/DV PAL Widescreen 1.46, and it looks fine.
However if i open this file in any other program, for example Prieview, it seems to not have made any difference? I'm still getting that squished look. And i can't send it to my client like that.
Is there any way i can save this file so that it keeps the desired pixel aspect ratio? Different file types don't seem to work, i've tried .tiff .pdf .psd but to no avail.
See examples below:
Edited photo opened in Preview:
Changing the aspect ratio doesn't alter the image, it only tells Photoshop how to interpret the image's pixels. (Note how the ruler in your "Unedited" and "Edited" images shows the same pixel dimensions).
You need to alter the image, stretching the pixels horizontally, to achieve the look you want.