Shaky Video From Analog Cameras Sharing a Single Cat5.?

Can anybody tell me why this video is shaking? I have two cameras that are doing the exact same thing, and I know it’s not the wind.

Both cameras are mounted right next to each other, orientated in opposite directions. The cameras are analog Pelco IS-310’s that share a single Cat5e. Each camera has one twisted pair from the cable that has a Pelco TW4001P balun on the other end. The balun then goes into an Axis M7001 Video Encoder.

To trouble shoot the issue I plugged the balun into an analog monitor and had steady video. I tried the other camera and had steady video as well. Once their converted to digital it starts shaking.

I can only assume the issue is related to the fact that both cameras are using a pair of wires from a single Cat5e cable; however, I have a similar set up with the a Pelco IS310 and a Pelco Spectra IV and haven’t had any issues.

Suggestions, ideas?

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