DPI is meaningless in video, it only has relevance in print.
I see... The thing is I am capturing frames to use in print art, and 72 dpi is not going to look great.
Is there a 3rd party utility, perhaps?
Or is AVI only exportable to 72 dpi.
No way to do that in PR, but import the TIFF's into PS and then adjust to the required DPI.
Thinking more about your Photoshop suggestion. I guess there is no way to import an AVI frame (or a series of AVI frames) into photoshop.
But I'll try it.
Also maybe I could import the AVI into Flash and see if I can get a higher than 72 dpi export out of that....
I will report back!
I would just export all TIFF's at standard resolution, then use an action in PS to batch process all the TIFF's to a higher DPI.
If you have to go to print with the resulting image, you might want to think about "stair-stepping" your increase, i.e. increase ppi by 10%, and then 10% and then 10%. This will yield slightly better results, than just doing a straight 72 to, say 300 increase, regardless of the resampling algorithm used. While on that subject, explore the Bicubic-smoother, and Bicubic-sharper. Compare the differences in their result, based on your subject matter and on your usage.
The "stair-stepping" can be easily written into an Action. I'd keep it a simple 10% and assign an F-key to it. Hit the F-key as many times as you need. Before you do your Action, do the test with the resampling algorithms to determine which works best for your subject and your usage.
Note: this is all done in PS, and not in PrPro - just to be clear.
Also, Dr. Brown has a clear tutorial on resampling via "stair-stepping," but I could not locate the URL at this moment. If I do, I'll post that link. He goes into a lot of interesting and useful scientific detail, IIRC, but also helps one set up the Action.