On Sat, May 29, 2010 at 6:39 PM, Jeremy Henty <onepoint(a)starurchin.org> wrote: You might be able to use something like Papagayo: http://www.lostmarble.com/papagayo/index.shtml It doesn't determine beats per se, but is a tool for creating synchs for animation (usually dialog, but you could use it for this also). -- Brett ------------------------------------------------------------ "In the rhythm of music a secret is hidden; If I were to divulge it, it would overturn the world." -- Jelaleddin Rumi

On 05/30/2010 12:39 AM, Jeremy Henty wrote: likely even more than one :) Ardour has the "Rhythm Ferret" (Menu -> Window -> Rhythm Ferret) which can split a track into pieces on Note or Percussive onset. There's also an option to set the tempo-map (instead of splitting the track) but I never go this to work.. AFAIK the RF is still work in progress. To 'spit out' the times: I dunno if ardour can do that these days. But you can always save the ardour session and extract the start-time of each region with something alike this: cat /path/to/session.ardour \ | grep "<Region " \ | grep "Audio 1" \ | sed 's/^.* start="\([0-9]*\)".*$/\1/' \ | awk '//{print $0/44100.0;}' \ | awk '//{printf "%02i:%02i:%02i:%02i\n", \ $0/3600, ($0/60)%60, $0%60, ($0*25)%25;}' Replace the 44100.0 with your sample-rate (48000?), 25 with your video-fps. and "Audio 1" with the track-name.. In principle this could be an awk one-liner; but the above is a bit more readable.. (-; robin

Wow, that's a lot of really prompt replies. I'm impressed! I've got a load of beat times out of the file using aubioonset (thanks to everyone who suggested looking at aubio). Now I need to identify which of these beats are actually on the beat of the tune, as opposed to grace notes etc. Are there programs or algorithms to do this? I surely can't be the first person to need this. Thanks again for all your help. Jeremy Henty