(A slightly old version of) MediaInfo says 21.0 Mbps for “Overall bit rate”. Not sure why it doesn’t specify the video-specific bit rate.
edit:
Since I couldnt figure out how to show it right in MediaInfo, I extracted video (and audio) track(s) separately, and put them in MediaInfo.
Video alone seems to be 13.5 Mbps.Video:
Audio:
Hope this helps.
Well maybe it would help you if you would select a different mode, e.g. View->Tree and you would get the required information without demuxing the file 😃