I then turned to google and was amazed (but pleased) to find that video-uploading troubles to blogger was a very common problem. A variety of suggestions were given: try a different browser; Google chrome was supposedly a better option (tried and it did not work; it was however an improvement in that it immediately informed me that my upload was not successful); use the updated blogger interface (no success), try at a less busy time of day (tried on a Sunday 8.30am, no success), the problem might be with the country you are posting from (nothing I could do about that), turning off the pop-up blocker, clearing the cache and disabling plugins as suggested also had no effect: the video clip was still not uploading to blogger.
The clip was then uploaded to my youtube account, and then embedded via html-code to blogger. Easy as pie! It worked! I found the physical dimensions of the clip to be just a bit too big for the blog and was able to trim it to a preferred size.
“Problems are Only Opportunities in Work Clothes.” Henry J. Kaiser