I have been asked for a high-resolution photo (300 dpi) for a poster for one of my videos. I only have a photo extracted from a frame at 72 dpi. I tried with an old version of Photoshop but the result is not great. Is there any kind soul who has AI upscaling software and can convert a jpg for me?

Thank you in advance

What are the pixel dimension changes, was it 4K footage to start with? Depending on how big the poster is, a good 4K frame should look halfway decent at that resolution.

1 minute ago, Chris Ross said:

What are the pixel dimension changes, was it 4K footage to start with? Depending on how big the poster is, a good 4K frame should look halfway decent at that resolution.

Yes it's 3840x1920 but they didn't like it and while I have a collection of NLE software and even a video upscaler, I have a vintage Photoshop 3.

I can try it in Topaz if you like - not sure how it will come out but happy to give it a go!

6 hours ago, Davide DB said:

Yes it's 3840x1920 but they didn't like it and while I have a collection of NLE software and even a video upscaler, I have a vintage Photoshop 3.

What didn't they like about it? just the pixel dimensions or other issues. If a little soft you'll only magnify that if upscaling. The other thought is have set black and white points and pumped up the contrast a little, that always helps give the impression of sharpness.

Assume you've gone through and picked your best frame and assuming that looks OK, bring it into PS and upscale it to 7680 x 3840 apply a little sharpening then re-size to the pixel dimensions they want. A good pic printed properly should look pretty decent at only 150 dpi. What finished dimensions do they want? Happy to give it a go with the standard PS tools, not sure how big the file will be but a jpg should email OK.

Thank you indeed. I will PM you soon

6 minutes ago, Chris Ross said:

What didn't they like about it? just the pixel dimensions or other issues. If a little soft you'll only magnify that if upscaling. The other thought is have set black and white points and pumped up the contrast a little, that always helps give the impression of sharpness.

Assume you've gone through and picked your best frame and assuming that looks OK, bring it into PS and upscale it to 7680 x 3840 apply a little sharpening then re-size to the pixel dimensions they want. A good pic printed properly should look pretty decent at only 150 dpi. What finished dimensions do they want? Happy to give it a go with the standard PS tools, not sure how big the file will be but a jpg should email OK.

I don't know what they didn't like. It's a film festival and I had with them only formal exchanges. I shared a folder with 5 good 4k frames and they replied to me that for promotional material they need 300 dpi images.

I tried with my vintage Photoshop and results were meh

1 hour ago, Davide DB said:

I don't know what they didn't like. It's a film festival and I had with them only formal exchanges. I shared a folder with 5 good 4k frames and they replied to me that for promotional material they need 300 dpi images.

I tried with my vintage Photoshop and results were meh

if they are asking for 300 dpi images they don't actually know what they want, they need to supply you with finished size, 300 dpi by itself is meaningless . 3840 x 1920 image is 32 x 16cm at 300 dpi. if you just type in 300 dpi on your 72 dpi image with resample selected it will make a 16000 x 8000 image which will look pretty average.

If you send me the image I'll email it back in a few hours