Broken picture when using 3x scale (-s 3)

[c-hoffmann]

I tried upscaling a 720p (4:3, 960x720) anime to 4K by calling

reve "input.mkv" -s 3 "output.mkv"

and it produced a very broken output:

Here's some more info:

• Windows 10, 22H2
• codec of original file: H264
• RTX 2060 SUPER

Testing another snippet with 3x produced the same broken result:

Scaling by 4x is also producing broken results:

Only scaling by 2x seems to be fine:

[queenkjuul]

got the same results feeding a DVD-remuxed MPEG2 MKV into reve at 4x scaling

It's a shame because reve seems to make better use of the system, running merge+upscale in parallel, but I have no idea what's going wrong or how to fix it (the intermediate frames exhibit the error, maybe we can swap a different realesrgan binary? doesn't seem to be on the ffmpeg side)

edit: looks like this is already using the most recent binaries from the upstream project :(