Hi, I am getting "waves"/distortion through the central sections of picture in my videos in playback. I am recording using Sandisk MicrosdXC cards 64/128gb U3. What is likely to be the issue and how can it be resolved?
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Do you mean waves like in this drone video, but not that heavy?
https://www.youtube.com/watch?v=YG8k5bS2Aak
If yes, then this is due to vibrations. Every electronic camera is more or less prone to vibrations, which results to the so called "jello effect". I have the same effect on the K2 when riding at a specific rpm, where the mounting point of the front cam comes to resonant vibrations.
How to resolve this?
Try to mount the cam at another position, ideally not directly at the frame of the bike. If that does not help, you can try using a dampener.
I don't see that "jello effect" as just being from vibration. It can be indicative of the maker choosing poor codecs for encoding digital video. I had issues when testing GoPros back in 2011. As you can see in these samples, the effect is HORRIBLE when there is nothing dominating the picture frame, LESS BUT BAD when there is something dominating part of the picture frame, and MINOR when about half of the frame is dominated by something that doesn't change from frame to frame.
https://youtu.be/iceW2ZJ4s6A
https://youtu.be/7gT9v9XEX-Q
https://youtu.be/QtqVz7UK8vY
MPEG and other video saves space by disregarding that which doesn't change frame to frame. Some do a good job processing every frame as new data, others don't. This same footage was fine when using a Canon point-and-shoot camera and a later video system had no flaws. It was a shortcoming in the GoPros I tested at the time.
As the Innovv is going on my RS mostly to document incidents and not for quality video production, I can tolerate a reasonably amount of "warbling" in the image if it's not caused by vibration.