Matt, "Wooden wonders to whisper jets", a truely excellent documentary which I've had for at least 20 years now. First thing I did when video to dvd was invented was to transfer things like this to digital. Videotape is barely playable nowadays and every time you stick a videotape into a vcr, you may not get it back in one piece again. Just do it before you regret it, and the copyright thing is a non issue, its your videotape to do as you like.
When I got mine all those moons ago, it was distributed by a company called "DD Video" which specialised in military and aviation documentaries. I don't believe they exist any more. So transfer yours over before you lose it forever. There are other deHavilland videos also. I have one called "A Tigers Tale-The tiger Moth story" which is present by the late Christopher Reeve (Superman actor). There is also a Trident documentary.
And, as you mention deHavilland, you bring back happy memories of flights I had in the deHavilland Heron a few years ago.