i made a clean install of 42.2
i restored all of my data.
several days later i focus about video data in the dolphin data panel.
for a recent (today) downloaded video file i get video data : basic file data and video data as width, height, duration, frequency etc.
but
for all the other videos only basic file data : type, size, modified, label, note, comment
this is true for all video formats: mp4, flv, ts