Please, can you add (at least some of) these tiny but really useful Quality of Life features:
Top 4

1) Allow to play videos in "Fit to window, large only" mode or at least with permanent 100% scale - not just scale all videos to window no matter what. It is useful for low-res video files.
2) Allow to use loop/repeat forever playback mode. It is really useful for "new" WebM videos i.e. as GIF alternative.
3) Allow to pause videos with single left click or Spacebar key.
4) Add media length/duration timer maybe with elapsed time i.e. Elapsed time/Total duration 00:00:00/00:00:00 on status bar
Next 4

5) Add Width/Height (video resolution) and file size fields on status bar.
6) Allow to mute sound with one click i.e. without menu. Maybe you can separate mute sound and volume slider features. In my opinion, there is no point to hide volume slider in popup menu...
7) Allow to double click on video file in Browser to open it in Viewer. Like for regular image files. Heck, you can go back from Viewer to Browser with double click but not from Browser to Viewer. The logic!

I know that XnViewMP is the image viewer, but you already have video support. So not make it a bit more useful?
Thanks!