itch.io

Good news, I will give it a try when you update.

Also for the text file it would help if you zero-pad the frames file names when generating them, to make my text file I had to first rename since they start as 000, then 1000, 10000 etc, windows doesn't list them in the proper order so exporting the list to a text file was annoying :P

yes here's the doc for that https://trac.ffmpeg.org/wiki/Concatenate

The latest .exe I downloaded appears to do it, to use GPU for rendering I think is automatic once you use NVEnc version of h.264 or h.265, here's the command line I used with newest ffmpeg downloaded from ffmpeg.org for my testing:

.\ffmpeg.exe -f concat -safe 0 -i frames.txt -c:v h264_nvenc -b:v 3000k -r 29.97  "O:\VideoProd\upscale\output.mp4"

notice the codec h264_nvenc, with this in task manager I see ffmpeg using 60 - 90% GPU and render completes in about 45 minutes for a series of frames that took about 5 hours in QualityScaler. My upscale project videos don't have audio so fortunately I didn't need to figure that out but I imagine however you are already doing audio should continue to work.

Is it possible to add options for video output/encoding and to enable using GPU to render?

I can render the same video file in approx 45 minutes instead of 4-5 hours using nvidia NVEnc h.264 codec with GPU enabled using ffmpeg command line (using the frames folder as input). Resulting file is much smaller too about 2GB instead of 10GB from this software in my test video with no human noticeable quality change.

So some control over output codec would be very appreciated.

Thanks,