Hi Lloyd - sorry for the delay, I have been away for a few days.
At the risk of being laughed off this website I have to tell you that I have made a stupid mistake! When I started my filming in April this year I was using a Panasonic camcorder which has given me endless problems since I purchased it in 2001, going backwards and forwards for repair for always the same problem, losing power. The day I started filming, guess what, after about 30 seconds the camcorder lost power! That was one time too many for it to break down and I decided to buy another camcorder - Sony. I started filming with a new tape - I think you have guessed by now what happened. I stupidly put the first tape with only 30 secs of film in a box with my project label on it. There was a gap of some weeks between finishing my project and sitting down to transfer it on to DVD. When I did, yes - the tape I took out of the box, convinced that was the tape with my footage, was the wrong one - it was in fact the tape that only had 30 seconds on it! I had this 'eureka' moment last weekend when I remembered what happened in April with the Panasonic. Searched my box of tapes and found the right one! Talk about feeling an idiot! All is well that ends well as I am really pleased with my filming, it's the best I have taken over a period of 4 years at the same site (swans, ducks, coots etc breed by the canal below my office window and every year I film them from birth to adolescence). So Lloyd I am sorry to have 'wasted' your time - thanks so very much for trying to help, I really really appreciate it. Best wishes Joangemma