Listen carefully, I shall say this only once.
This is NOT a camera problem. It's a transmission problem. The LOHAN team do NOT transmit video, they recover it from the plane/whatever when it lands. They do transmit stills, very slowly. The Falcon 1st stage is at the bottom of the ocean, so not so easy to get the SD card out.
As for the transmission problem, the landing was over the horizon, so the telemetry had to go from the rocket, to a chase plane. The weather was terrible, and the signal is garbled. Simple as.
Of course, video has a pretty low priority to other telemetry, and bandwidth is very limited. The data is more important, which is why they can sure the landing was a success - the data arrived, the video didn't do so well.
Also because fo the bad weather, the recovery ship wasn't able to get to the stage prior to it sinking.