What I want to do: upload a low-resolution video (640x400) to YouTube in high quality.
If I upload it rendered to 640x400, it is only available in 360p on YouTube, which gives it low bitrate and appear bad.
If I upscale it to 1920x1200 using VEGAS Pro 14, it becomes slightly blurry.
I've tried using ffmpeg, but it crashes whenever I use the -scale parameter.