danmckinney
lvl.2
Flight distance : 29196 ft
United States
Offline
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OK, this is weird. I have a clip of a high aerial, and a cloud's shadow is passing over the cornfield below. The shadow's movement across the landscape is jerky while the rest of the movement is smooth. It sucks because I love the look of the moving cloud cover, but I can't use it like this!
All other video shot that day looks good - movement isn't choppy, landscape passing under the camera is smooth, details like rippling and water and leaves moving in the wind all look natural, nothing like this large shaded area moving in distinct jerks.
I shot it in D-log with an image size of 3840 x 2160 and frame rate 29.97.
I see the choppiness when I preview the original clip in Windows 7 Media Player, and at every stage in Adobe Premiere Pro, too. The link below is an edited export from Adobe.
Here is a link to the original file copied directly from the SD card. Download this and check it out.
https://drive.google.com/open?id=1Zsm15qQUGQj0tUOK0J0kJvVpUcA6D5Z1
If you just look at Google's preview playback, you'll see degraded quality from Google's processing. To see and work with the original, you really need to download the entire file to view on your system.
Is this the camera's compression that is treating the shadow area so differently from the rest of the image?
Unfortunately, it's not that easy a phenomenon to replicate! You need a partly cloudy, windy day, with big chunks of clouds scudding across the sky. But for now, maybe it is best to stick with 2.7 instead of 4k...?
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