I’m using Pop! OS 22.04, I’m happy with it. It’s a good distro for gaming, BUT… lately there have been a lot of issues with the NVIDIA driver, and the Linux 6.16 kernel. I only recommend it if you’re comfortable troubleshooting, using the TTY, and doing other stuff before giving up and deleting your whole drive. 😅
Any difference in edition will be obvious in the runtime. If the movie is 1:29:43 in the theatrical edition and there’s a special edition that adds some time, say, a total of 1:47:13 runtime, you’ll want to ensure that the Latino audio you’re ripping is of the same edition. But the English and dub tracks will always be the same length for the same edition. Generally the Wiki articles of movies/shows have the runtimes. Or the fandom wikis.
Afterwards you can just merge the audio and video tracks into one container file (MKV, MP4, etc.).