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Why is analog FPV video so terrible? It’s a really common question. It seems like every part of FPV RC flight has gotten amazing, but our video feed is still like something from the 80’s. Or worse.
It turns out, there’s a good reason digital HD FPV has not taken off.
something to watch very closely are the wireless adapters for VR headsets as these are trying to solve the very same problems of latency/bandwidth/cost/weight. May make cheaper miniaturised hardware possible.
Wasn’t that old TV signal with roof antennas analog? As I remember, the picture was quite OK! At least give me that!
Well, i would start by compromising on resolution. 640×480 would be fine. 800×600 would be better. I would be most interested in digital as a way to get a clean signal through a noisy medium, which is what digital is good at. But it may be hard to sell an expensive digital fpv system that isn’t even 720p. Also, the compression thing is a serious issue. Probably ‘Motion JPEG’ is the best we can do, and thats not very good compression. On top of all that, low res digital would look exactly the same as analog. The only gain would be less visual static, and slightly better range, which is nice, but not amazing. So there may be a small market for low res digital fpv, if that helps solve the weight and cost issues.
If you want HD low latency you have to use a large platform. Racing and freestyle platforms will improve in time as everything does in the world of electronics. However, it may only be the Borg that can jack-in and get HD at low latency for now.
You may try SKYDROID T12
I could be wrong but what about the crosstalk between vibration and signal doesn’t that effect the video quality as well? I mean it would make sense if its true vibration has a effect on some degree because the vibration goes unchecked in the wires i mean you cant get rid of vibration all together but im sure it effects the way we see video transmission ultimately it boils down to raw power mixing with signal power two different things as far as i know again i could be wrong but its just my thoughts at the moment but i believe that even with coated wires some of the vibration goes in and some of the signal is loss even if only a small amount they still have room to crosstalk
Have to agree with you, but I do still have hope lol
Talking about compression. Your audio could do with a little less 😉
Is it possible to connect to your ,say hero 5 go pro some how and see what the go pro sees in hd?
Latency its all about hardware. technology will speed up and rendering will be faster.
Easy to test take a photo and save it as a BMP file. Change the image size to say 640×480 which is about what we can get from our analogue video signals then save that file as a BMP also uncompressed. Look at the size of that file and then multiply that size by the frame rate you would like to see in your headset. So a quick calculation at 16bit depth at 60 frames per second get to just over 281 megabytes per second uncompressed. That would be for pretty much the same resolution we get with analogue video.
He has no idea about digital video or RF, most things he says are completely wrong.
I was so getting ready to argue with you in the comments section, but you hit every nail on the head so beautifully. I am subscribed now! Thank you Josh!
Maybe forget to see what DJI had done in FAI Shenzhen
I believe it’s a matter of time.
Digital video would suck for FPV flying. A little interference or a weak signal and instead of snow and black lines you wind up with blocking and freezing. No thanks, I’ll stick with analog for my FPV use.
I wouldn’t say impossible 🙄
J, my mr steele earbud works great until I arm my quad. Nothing but static. 99% sure it’s not wind because it still does it while just sitting on the ground at idle. Using the mic from my swift 2. Any thoughts?
Agree about all said here. HD will not work for FPV, however I’m perfectly fine with 480/576p resolution video for FPV camera. I believe that it is much easier to send it as digital signal and it is worth to try. Because analog 5.8G band congestion is already a real thing and in good weather popular flying spots here sometimes have 5+ guys in same time which make things, erm… hard to see.
What about an analog signal on a broader bandwitch notch (e.g. over the whole 5.8 ghz spektrum), such that more info can get trough?
Great video, Josh, but I think you’re forgetting what lies on the horizon with 5G! Your argument was entirely based on why HD FPV isn’t currently possible, but you have no consideration to what night make it entirely possible in 2 to 5 years.
Weren’t we doing great quality TV on 100Mhz 800Mhz band ? I mean analog TV was relatively great of a frequency way lower than 5.8Ghz…. And achieving like 20 30 canals…