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n00mkrad / cupscale

Image Upscaling GUI based on ESRGAN
MIT License
2.14k stars 113 forks source link

Feature Request: Lossless mode for video, i.e. PNG output #142

Open BlohoJo opened 2 years ago

BlohoJo commented 2 years ago

Setting the CRF to 1 is pretty good, but it's not exactly lossless.

I would really prefer PNG output support. It seems like this could be added without too much trouble, but what do I know.

I know I could do a batch image resize by extracting PNG frames from the input video first, but then I'm doing a batch image process, and I'm not sure if Cupscale is doing anything for video input to try to maintain frame consistency so that the output doesn't look like it's "buzzing" or exhibit other anomalies.

This also has the added effect of being able to recover from a crash without having to reprocess the entire input video.

BlohoJo commented 2 years ago

OK, so I just realized that Cupscale does actually use PNG, and stores frames in the frames-out folder. So PNG output would simply just be an option to move the folder, really.

BlohoJo commented 2 years ago

When a project finishes, it deletes the contents of the frames-out folder, with no way for the user to specify in the application to keep the contents of the folder. Frustrating!