Problems using my S5 as a video camera on the bike

[max]

GoldOxide makes a very important point DBM, we don't know on what position of the bike if any you used the phone.
Give it some thought, could you see it in the phone's screen whilst recording or was it only visible when the video was played back and is it still happening when the bike is switched off?

If you can see it whilst recording it may be a good idea to see where on the bike is it worst and how far away it stops , remember you are the only one of us that has seen this, so for a more conclusive result you would want to help us find your answer.

By the way are you still enjoying the cb?