Bobspez wrote:
I second downloading the free VLC media player. It will play your mp4 video, allow you to stop at the frame you want, then take a snapshot of that frame, giving you a jpg image. Bear in mind that unless you are shooting 4K video, the frames of a video will be at much lower resolution than still pics. If you are shooting video at the highest HD resolution of 1920 x1080, you will get a jpg image approximately 2MP in size.
I agree. VLC is very useful, and that with your cameras (a Nikon P600 or Panasonic DMC-ZS100) it is most likely that you will be limited to 1980 x 1024 resolution at best, unless the Panasonic camera was set to 4K which it appears to support. It will be a bit of work to extract still images, so only the OP can decide whether it is worth the effort.
I have no idea which video applications support 4K video. It looks like VLC may, but might need a few configuration tricks. It may also depend on the age / performance of the computer. Perhaps some of our video oriented contributors can address that.