PSNR and SSIM are image quality metrics. Their use on videos involves calculating the metric for each pair of frames and then applying some aggregating operation to the series of frame scores, typically the arithmetic mean. What this means is both inputs must have same frame count with each encoded frame paired with its source frame. So, deterioration of ...
The problem is you don't have resolution for 700% upscale. ~~And aren't likely to find it in those tools~~ (strike that).
You can or may have already tried Video Enhancer. They claim to use Super Resolution to get the upscale possible. It doesn't suit all video sources. They have an AE plugin too.
If none of your searches for auto upscaling work then my ...
Try adding the -pix_fmt yuv420p10le option (e.g. before -vf). Or only -pix_fmt + for using the same pixel format as the input video has.
If it doesn't help, you obviously have an inappropriate, albeit more common FFmpeg version — only for 8-bit colors. (Your original video uses 10-bit colors, and FFmpeg will try use the best 8-bit pixel format in ...
YouTube re-encodes whatever you give it. The process is lossy so there will be a quality reduction. All you can do is give it a very high quality:
ffmpeg -framerate 10 -pattern_type glob -i 'resized/*.JPG' -vf scale=1280:-2 -c:v libx264 -crf 17 out.mp4
Use -crf 17 or -crf 18 for higher quality.
Try without -pix_fmt yuv420p. I'm not sure what YouTube uses ...
If I understand correctly, your question is "why is the footage of this camera blurry".
The answer to that would be: It is out of focus. Cameras have a focal point and everything straying away from that (spatially) will get blurry. You can see that the back-windows is in focus, meaning that the lens has its focal point further back.
I think you might want to read this article, it will probably contain the answer you are looking for:
You can use Premiere Pro or similar video editing software and plugin Flicker Free from Digital Anarchy with one of the preset.
Result of plugin work
Settings of the plugin in my case
Also I know some other methods but they are poorer and harder.