So the only reason nobody implemented digital video systems until now is that they weren't sure if it could be done, and DJI locking their stuff down is actually good for the hobby.
OpenHD. If you fly wings and 135ms latency doesn't bother you, you can build it yourself. Of course, it uses Raspberry Pi's proprietary Broadcom SoC h264 encoder, so much for open :)
Is TBS locking their proprietary protocol they use to differentiate themselves from commodity Semtech ICs good for the hobby?
