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Comment by Amorymeltzer | Hacker News Reader

Roughly the start of success from the livestream: https://youtu.be/p1KolyCqICI?t=2265

Video (of the video from Perseverance): https://twitter.com/NASA/status/1384099167832735748 (Better version from the livestream in child comment https://news.ycombinator.com/item?id=26861334)

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Livestream timestamp of the video from Perseverance: https://youtu.be/p1KolyCqICI?t=2447 (slightly better quality)

I hope that in a little while we get an actual video like we got when the whole thing was descending onto the ground.

I am not expecting much from Ingenuity but I would be very disappointed if we didn’t see any video from Perseverance.

I know doing video requires a lot of power, but I really feel it is justified for something like this. It would become a historic video.

We'll get a full video once they have time to uplink it. Unsurprisingly, you can't stream high-quality video from Mars.

If I recall correctly, Perserverence was recording images at roughly 7hz and will be sending them back over the coming days. I don't think they are compressed as video, since perseverance has pretty wimpy main computers and isn't running FFmpeg like they had for the descent videos, which came from a separate system.

Can't wait until the SpaceX's Starship land the next gen Mars Helicopter that might be 10-20x bigger in 2-4 years.

Knowing spacex, they will deck that thing out with 4K video even if it means dropping a few satellites into Martian orbit to act as relays.

My understanding is that video requires power to transcode and compress, and power is a scarce resource.

This is especially true on ingenuity, which is powered by six 18650 batteries. And most of that power is dumped into just keeping it warm enough to function, not into actually flying.

https://rotorcraft.arc.nasa.gov/Publications/files/Balaram_A...

Wouldn't transcoding the video still produce the same amount of heat?

Not that much as it will no doubt be hardware accelerated.

My point is that if you're spending electricity to generate heat, you can divert as much as you want to do calculations with no reduction in the amount of heat generated.

The problem I suspect is where the heat is going, heating up a logic board won’t do much to stop the motors freezing.

Battery-powered helicopter designs don't really scale on Mars any better than they do here on Earth. At higher vehicle masses, you'd need larger/heavier motors to get the larger/heavier blades turning as quickly as they'd need to (and in much lighter air than we have here).

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