Wavy video

[Daffypuck]

I was just reviewing some footage just now and noticed, while stationary, that my video was wavy. Any ideas on whats causing this?

 

[jokiin]

sample video?

 

[Street Guardian USA]

You might have a bad Sony Sensor, I replaced 2 in the last year with that behavior. Please post a sample video to confirm it's what I think it is using http://mega.nz
If it is, happy to replace it pronto.

 

[Daffypuck]

bit harder to see once I converted it and up;oaded it, but you should be able to see it. Did I link this correctly?
https://mega.nz/#!AABmwDjL!lcYXRl6a40GCN1awgOVHB_GRcao7D3erL1Qqk0HvbyU

 

[Street Guardian USA]

bit harder to see once I converted it and up;oaded it, but you should be able to see it.
https://mega.nz/#!AABmwDjL!lcYXRl6a40GCN1awgOVHB_GRcao7D3erL1Qqk0HvbyU

If you're sure you don't have any heavy engine vibrations, that example matches what I saw with the 2 others. (2 out of many hundreds in the last year) It's some type of rare sony sensor defect. I'll PM you with the replacement plan. (check your inbox shortly)

 

[Daffypuck]

That truck is an LNG engine. Theyre very quiet and very smooth. You almost cant even hear them at idle. The waviness is even more present in the raw footage. Ive never seen that before in any other footage. Ill go look at some more footage from today and see if I notice it in different instances.

 

[Street Guardian USA]

Ok sounds like there is no vibration then.

The other 2 I replaced were the same, you only saw the wobble when the vehicle is not moving. Once moving the wobble effect is gone.

 

[Daffypuck]

Ok, I just checked some stationary footage and there was no wobble. But once I started the truck, the wobble, or waviness started. What causes that? Ive never seen that before. I wonder if has something to do with a bad ground when the engine is running. Odd.

 

[Street Guardian USA]

Ok that's interesting. On the others it wobbled at all times while still regardless of engine status. Can you try taking this to another vehicle and try to replicate the problem?

 

[Daffypuck]

I ran across an old thread here that had the same issue. In his video, he had fairly loud music playing with heavy bass. But in another video he posted, with no music, he didnt have the problem. I seem to recall looking at footage from my cam mounted in my personal car while I had loud music playing and the sub was causing a similar disturbance in the picture. I think it has something to do with the camera not having a shutter and the vibrations caused by low freqs passing through the windshield into the suction cup and then ultimately to the camera body. It must be susceptible to a certain range of lower frequencies.

 

[Daffypuck]

I will try it on my way home tomorrow with my personal vehicle. Ill try to get it to wobble by turning up a bassy song. Heres another discussion on the very same subject I found and a fix for it.
https://dashcamtalk.com/forum/threads/mini-0806-vibrating-depending-on-a-car-engine-rpm-fixed.9582/