Fair point about the Indian rail network
Mind you, Hydrogen is actually less dangerous than batteries. When there is a leak, it generally dissipates fairly quickly and fires or similar are quite rare. So in that case… Maybe it would be better if the Indian railways used Hydrogen after all
Except you have that problem with everything that doesn’t somehow take power from a catenary or similar - in the case of diesel, you’re also moving your fuel, so I’m not sure how that would be different.
And I wouldn’t exactly say batteries are cheap or dangerous. Yes, when you do have problems, the fires are quite big, but it’s a rarity for problems to exist, especially with trains that are maintained to a much higher standard than your average car.
You don’t even have to fully electricity your network. Having battery electric trains run on a partially electrified network has proven to work fairly well. Charge when you’re running on an electrified section, and if you’re running on a line that mostly isn’t electrified, you can electrify individual stations to top up the batteries there.
Don’t get me wrong, I want hydrogen power to work, but I have yet to see anything that has reasonable promise to be better than a combination of electrification and battery electric trains.
Take anything the lead dev of GrapheneOS says with a grain of salt. He’s a little… Um, special.
yt-dlp has an option to list everything it downloads in an archive file (so that when a video is downloaded once it isn’t downloaded again), and also has an option to download playlists. That way, it should be possible to set up the command to do what you want.