substrate-open-working-groups VS moonfire-nvr

Polkadot Developer Community - Official community forum to discuss Substrate, PolkadotJS, and building cross-chain dApps.

And of course you can always develop your own blockchain with Substrate to support it.

A great framework for building your own blockchain, and use numerous off-the-shelf modules, with Substrate - https://substrate.dev/

If you're interested in developing yourself, check out substrate.dev.

Assuming you are working through the substrate.dev tutorials I have just had this same problem as worked around it by reverting the node template to the `polkadot-v0.9.25` tag.

Well. Polkadot created substrate (substrate.dev) which is a framework for building a blockchain, with a lot of general components to make it easy to "plug-and-play" your customizable blockchain. I tried using their "Getting Started" guide to spin up "my own blockchain", it was done within an hour or so.

Check out https://substrate.dev/ !

Substrate is not a chain; it's the default address style, named after the Substrate development framework which virtually all (if not all) parachains are currently built with. https://substrate.dev/

Do contact the Substrate project (basis of the Polkadot/Kusama project), which is based in Berlin. You can contact them on their channel (see their website on http://substrate.dev), they're friendly and many of them are native German speakers.

How do folks test timing-related stuff with MSW? AFAIK, MSW doesn't get along with jest.useFakeTimers. It drives me nuts; I have a bunch of disabled tests in an open-source project and at least one that is flaky because it uses real timers where I'd like to be using fake timers. [1, 2]

I've been thinking about ripping out MSW from my tests in favor of my own API-level mock for this reason. But it seems like many other folks are happy with MSW. I have to assume there's something I'm not getting. I'm a fish out of water with frontend stuff in general...

[1] https://github.com/scottlamb/moonfire-nvr/blob/5ea5d27908f1a...

[2] https://github.com/scottlamb/moonfire-nvr/blob/5ea5d27908f1a...

> I wonder how hard it would be to run your own streamer pipeline or whatnot on these things?

Agree with the_biot: The actual streaming component is not too hard. If this were the biggest problem, I'd be thrilled to contribute to an open source streaming server to complement my open source NVR. [1] The driver situation is indeed a bit harder—these things don't just have mainline Linux support with v4l2 for the video input and encoder. Or open source drivers of any kind to crib from AFAIK.

The biggest problem IMHO is that there just aren't any good cameras to buy, even completely ignoring the software aspect. I want a camera that:

1. doesn't support genocide. Nothing that involves Dahua, Hikvision, or Huawei. See IPVM articles on the subject. And a lot of available cameras are relabeled Dahua/Hikvision stuff and/or use Huawei components.

2. is legal for sale / authorized for use in the US. (See the Secure Equipment Act of 2021.)

3. has good night mode performance: IR/day switch, a sensor that is at least 1/1.8", reasonable resolution (somewhere from HD to 4k).

4. has an "eyeball" or "turret" form factor rather than "bullet". The latter seems to really attract spiders, so you end up with a really nice video of a web...

5. supports PoE.

6. is weatherized (IP66 or so).

7. is reasonably priced.

If you ignore #1 and #2, there's some nice hardware out there, but I'm not willing to do that. If you ignore #3, there are a few options (GeoVision, maybe Reolink, maybe Hanwha.) If you ignore #4 and #7, there might be a couple (Axis, maybe Hanwha.) Nothing that ticks all the boxes.

Hard to get excited about investing a lot in the software when the hardware isn't there.

[1] https://github.com/scottlamb/moonfire-nvr

saw one nvr project in rust - https://github.com/scottlamb/moonfire-nvr - maybe you can find answer there

Moonfire NVR does basically that. No decoding at all. The configuration process could be smoother, but there's a decent setup guide to follow.

This is exactly what you're looking for: https://github.com/scottlamb/moonfire-nvr

But I would definitely avoid compiling Rust on the Raspberry Pi 3 if you can avoid it. I set up a Docker cross-compile environment for this reason.

Moonfire may be what you're looking for otherwise.

That last bit's not quite true: another option is to just use the cameras as a dumb stream source and do all the fanciness in an open source NVR. I've been slowly working on moonfire-nvr. Help welcome!

Moonfire