I downloaded the 0.5 version of the app. to test it and here
are the results. Now I'm most interested in downloading music
videos so my tests are a bit biased.

I ran the following tests on a laptop running CentOS Stream 9.

From YouTube.

1. download single video
2. download a queue of videos, 9 videos
3. download a short playlist, 4 videos

All worked as expected.

I then downloaded a video from Rumble and that also worked.

So it looks good.