First, I apologize upfront for not knowing the proper nomenclature. I'm hoping this is a basic question for those that know the answer. Since this question deals with both Premiere and PhotoShop, I posted the question in both forums.
Ok, this is a combo question that involves both Premiere and PhotoShop (cs5). While in Premiere, I'll take a PNG pic of a frame so that I can then rotoscope it. When I open it in PhotoShop, the image is no longer in the 16/9. It is the same height, but the width has been compressed. When I am finished with the file and reimport it to Premiere, it has the wrong look. I can monkey with the image by unlinking the scale (something like 94% to 140%). That tricks it to be acceptable for my uses, but it would never work for real life images.
My question is... is there a better setting to choose when taking a frame capture to avoid this? I must be making an elementary mistake that I am unaware of.
Thanks for your time... hope
Start reading on PAR, pixel aspect ratio. Your source material is probably not using square pixels in PR and PS is interpreting them as square pixels. Hence the distortion.
Along with Harm's comments (sounds like a PAR issue to me too), PS will ONLY display Square Pixels, but should warn you, if the Image is using Non-Square Pixels. PS, as of version CS, can work well with Non-Square Pixels, regardless of how it displays them.
First, in PrPro, check the Properties of your Video Clip. Determine what the PAR is.
Then, I would use TIFF, as it handles Non-Square Pixels well. Not all Image formats can deal with Non-Square Pixels.
After you have done the Export of that Frame, Open it in PS, and again, check the PAR, Image>Pixel Aspect Ratio.
Edit, as is needed, and then I would Save_As PSD from PS, and Import that into PrPro.
For some background on PAR (Pixel Aspect Ratio), see this ARTICLE.
PS - I'll post to your PS Forum thread too, so that others might be helped by the answer.
[Edit] For display on non-Square Pixels in PS, one can turn OFF Pixel Aspect Ratio Correction under View.
Message was edited by: Bill Hunt - Added [Edit]