A nice little video - thanks, Swiss!
Viewing videos can sometimes be problematic, depending on their format and what the would-be viewer has available on his PC.
For instance, I can view this video using my favourite VLC Player, but it has no audio. If I play it in Quicktime, I do get audio but no video! Same situation in PowerDVD. Windows Media Player will handle neither audio nor video. It's all to do with what software one is running, what codecs one has available and where those codecs are installed on the PC. It's a bit of a minefield!
Inability to view properly sometimes leads to limited responses after a video is made available.