A third of a second seems long to me for some reason, perhaps the .15 I got was because I was using 5GHz, not sure. I wonder how much distance will affect the latency?
That's what I was thinking, lead time would not be such a large issue at the lower speeds you will be filming at. I would think a high latency gets some pilots in trouble, a 300ms lag can make a significant difference at 100 mph, but not so much at <20.It really depends - its like driving and braking, reaction time etc - imagine if you are flying at 100kmh, a 50ms delay means your quad would have traveled 1.4m before you can react to what you see ... generally fpv systems have between 40-200ms delay which makes them usable for this purpose ... however for fpv and taking video shots this may not be as relevant than for fpv racing due to different speeds ...
A third of a second seems long to me for some reason, perhaps the .15 I got was because I was using 5GHz, not sure. I wonder how much distance will affect the latency?
Yep, looks like I left out one leg of the trip, will have to do it again...In your picture I dont see the real source - I shot a timer on a galaxy note through the camera as you can see in my picture, then you see the time displayed on the phone connected to the controller and the final result in the display - so its 3 delays camera, transmission to controller, screen grab and cast to hmd ... phone to hmd is lower as you can see 130ms
That's what I thought mate ..Yep, looks like I left out one leg of the trip, will have to do it again...
Redid it and it came out .37 a hair slower than yours. Not sure it that is acceptable for FPV, I will try it with the shield K1 to see if it is also comparable. Seems if we want really low latency we will need to go with a direct Occusync link. I had only planned to use this for a spotter monitor for a GS so the time isn't that much of a deal.That's what I thought mate ..
Developers can get live H.264 video data from Camera using the Mobile SDK. The H.264 is a video coding format that is currently one of the most commonly used formats for compression, and distribution of video content.
I have even found a nice solution on how to power the dongle with my headplay hd not needing to take the Mavic battery but connect the usb from the dongle to the balancer lead of the 2S that powers the headplay hd ...
HobbyKing™ LIPO to USB Charging Adapter and Cell Checker (2S~6S)