Video not working with iPhone 5S

[fotiDim]

Video is not working right with iPhone 5s (Romo X app). I do get a video feed but it is very glitchy. I see mostly green frames and only occasionally frames from the camera feed. It seems that the behaviour is dependent on where Romo is facing. On some orientations in my room the camera feed goes normal but as soon as I move Romo a bit it goes green again.

At the same time my iPhone SE works fine, so it must be something with the 5s hardware encoding.

More info in this PR

[fotiDim]

There has been some progress on this topic. We now have 2 paths for video encoding. I have brought back the FFMPEG video path to allow iOS 7 compatibility. Currently it is only being used by iPhone 4. We can test to see if 5s works better using FFMPEG compared to VideoToolBox.

[fotiDim]

After spending some time experimenting, FFMPEG is crashing on the iPhone 5S due to memory (BAD ACCESS) issues. I suspect that some code is not ready for 64 bit but all my attempts to find the root cause were unsuccessful.

It is probably better to drop this effort and migrate to WebRTC instead. I had initial success running a demo on iPhone 5S using WebRTC and video streaming is solid.