If I screen-capture a snapshot from a HDR movie, will the snapshot image be a HDR image? I have a HDR movie content playing on a HDR supported PC, using software like the VLC layer. If I take a snapshot to get a png image file, will the image file include the HDR information? That is, if I compare the image file with the movie frame where it is snapshot side by side, will they look exactly the same?
If I take a snapshot to get a PNG image file, will the image file include the HDR information?

How do you take a snapshot? 10 bits minimum color depth of the PNG has the same effect on your HDR display.