The issue is not Topaz . the issue is your original video resolution is not Square Pixel (PAR: 1x1) and you are trying to upscale to a resolution that is meant for Square Pixel size (e.g. 1920x1080). That is why you are getting a strange DAR values (0.89:1). perfect PAR of 1x1 for 720 Width, is 720x540 (for 4:3)
Either you need to select Square Pixel Type in Topaz (not Original Pixel Type), then output to whatever resolution you want.
Or if you want to use original Pixel Type, you should select a custom Width you want, letting Topaz autofill the Height resolution for you… (or select custom Height, letting TVAI autofill width)
P.S. I have noticed personally that “Original Pixel” settings in TVAI generates sharper and slightly more detailed/quality results then selecting “Square Pixel” on my 1998 Video8 4:3 576i camcorder movies. So I never use the “Square Pixel Type” option in TVAI. I always select Original Pixel type.
Either I select custom resolution (as I explained above) or I convert my video to Square Pixel (PAR: 1x1)(prefered way now days for me) 1st using the “Hybrid” Free tool, then process the converted video in TVAI for upscaling.
You can test both for yourself and preview both on TVAI and if you wish you could also use a compare tool to check the results to see for yourself if you notice any difference between the two (that would save you tons of time). or just playback the 2s / 5s preview you generate from both one right after the other to see if you spot any difference in quality.
