Right - I'm back - update to the post #16 above - simple maths ( well, arithmetic ) tells us this from the score -
First part -
1/4 note = 75bpm for 8 bars
i.e. 8 bars = 32 x 1/4 notes, each 1/4 note lasting 60/75 seconds = 0.8 seconds
So, Opening 8 bars lasts (0.8 * 32) seconds = 25.6 seconds
1/4 note = 80bpm for 57 - 8 = 49 bars
i.e. 49 bars = 196 x 1/4 notes, each 1/4 note lasting 60/80 seconds = 0.75 seconds
So, final 49 bars lasts (0.75 * 196) seconds = 147 seconds
Total duration should be 147 + 25.6 seconds = 172.6 seconds
= 172.6/60 = 2.88 minutes = 2 mins 53 seconds
And that's exactly how long the entered MuseScore version runs for. You'll understand - I just HAD to do this check in case something HORRID had happened within the underlying timing of MuseScore ( I do a lot of wicked things with the sound and low-level MIDI drivers and I had to convince myself that nothing untoward had happened !!! ).
The upshot of this little experiment is - no - you cannot rely on the video, or the extracted MP3 I provided above for anything other than early practice - do NOT use it for submissions - we'll need a properly created MIDI/MP3 to work from as a click/backing track - as @Fiddlerman says in post #17 above...
This has been a busy day - and now I have to go out again... rats.... laters
Perhaps the recording is actual humans with a real-life drummer. That would account for it.
Q: How do you know when a drummer is at the door?
A: The knock speeds up.
Q: Why are drummers in bands?
A: They like to hang out with musicians.
A positive attitude may not solve all your problems, but it will annoy enough people to make it worth the effort. ~Herm Albright
LOL @Uzi ! Baaaad (aka 'good' ) drummer jokes ! I had pictured like a "conductor" ( too grand a word ) marking time somewhere - it was only a few percent out. It's amazing how accurately we can count seconds - well many of us can - if I count to 60, I'll be out by only +/- 2 seconds. They might have just "winged it" of course.... LOL
I seriously recommend not copying my mistakes. D'oh -
Please make your own, different mistakes, and help us all learn :-)