Where are your videos? Encoding is a more complicated problem in that the source and destination would impact things. Bandwidth transfer can cost more than the compute on some clouds (and impact speeds).
If it's on S3 it might still be best to use AWS EC2 in the same region.
Oracle is definitely a good choice with 10TB free tier.
Hetzner cloud likely has cheaper compute than Oracle.
Specifically for Video encoding I'd look into benchmarks about what certain ARM architectures can do. Not all encoders can correctly utilize them and they may end up very slow.
They are not really identical and forked from the same base project, they may have similar features.
Acode is foss,built using cordova and JS tech,has its own plugin system.
Squircle is also foss and built using kotlin.
Vscode for android is just code server inside web view wrapper or browser and embedded git.
I can't speak for the other ones as they are proprietary.
This is pretty good. I use it daily on my Windows 7 system mainly because of hevc, eac-3, jpeg-xl support and a slightly newer version than chrome for windows 7 https://thorium.rocks/win7