bsprague wrote:
I think the OP shot the 4K video on his camera and then captured a frame as a still in post processing. Unless I missed it, plagiarism is not involved. I don't think the OP is taking pictures of other's videos on his TV.
FWIW, generally 4K video from Sony and Panasonic is shot at 30 full frames per second. ("4K 30p"). Each frame can be singled out as a 8MP JPEG with programs like Lightroom, all the video editors and some viewers like VLC.
That's right. The OP only used his camera as 30fps, 8MP camera with very long burst.