Problems with frame-by-frame viewing of videos

Whenever I attempt to provide frame-by-frame viewing of embedded videos in the new non-legacy H264 format supported by Adobe Acrobat, I find it does not work.

Has anyone else had this problem? Does it have a solution?

Or am I simply mistaken in thinking that it SHOULD work?

Specifically, what I would like is for there to be a key that one could press to cause the video to advance a single frame at a time. This works beautifully in Quicktime, where one can press the arrow keys to move forward and backward a single frame at a time - a function absolutely crucial for my videos, what are snippets of deaf sign language lasting about 2 seconds each, to be analyzed in detail by linguists who will read my PDF book. But the latest versions of Acrobat Reader block MOV files, and provide the capability to permit them only after getting past a frightening message that may as well have included a picture of a skull and cross bones beside it - a warning I cannot expect many of my readers to dare to contravene.

The closest thing I find to what I need in Acrobat's built-in video interface is the Seek function that one can specify in the Controls tab. But when I request this for my videos, I find that even this does not seem to work. Apparently one is supposed to be able to drag the little cursor along the bottom of the video to play it frame by frame, but when I try this nothing happens. Or maybe one should be able to click in various places and see the picture jump to that point. Both of these functions work beautifully in Quicktime, in addition to the arrow keys.

Actually the cursor does work slightly but it's far too crude. If I click it far enough over into the video clip - a full second, say - then the video picture does jump to that point. But what I need is frame-by-frame viewing.

Any suggestions?

Thanks for your help.