now we can move the progress bar when playing video by keyboard only.
it will be very helpful if mouse is also allowed， thanks
do you mean the navigation slider? you can drag it with the mouse when playing
Right, but it could be better. With longer videos this becomes quite inaccurate. I've always wished there would be sort of "zoom" function for precise seeking. Holding down a key while scrolling mouse wheel, for instance.
Mouse wheel navigation granularity doesn't depend on video duration. Time-based navigation using keyboard or button auto-repeat in steps of 1, 2, 4 and 60 seconds is also available as well as fine seek by dragging the slider with the Ctrl button pressed (both usually orders of magnitude slower than the keyframe-based one). The latter, of course, loses accuracy depending on ratio of window width to video duration.
Quite a lot of possibilities here.