Hi :)
I’m trying to setup an eviroment in VVVV for making Real Time rendered Music videos streaming an audio Track and its midi file along side each other, The addition of the new midi nodes in the latest release is awesome ! ;) cheers guys! But… I still wishing that the filestream node would output more data for midi files like, BPM, Beat type, Position in measure etc… (just like the midiclock node) instead of just the duration and position in seconds… At the moment the only ways I can think of would be to grab the BPM from the midi file somehow, and use it as a divisor for the duration in seconds (pain). Or stream the midi and/or audio files from another app also sending a midiclock signal… So for the Gods of VVVV i have 3 questions
will the filestream or any other node output BPM or Measure info from midi files streamed from inside VVV??
will the new Timeliner App (which is an awesome idea by the way) be able to load midi files and display/send BPM measure info ?
Is there a work around to this that I have totally over looked or just not realised because I am a total noob… ;)
looking at the MIDI file specification i bet you could use Reader and RegExpr to parse out the Tempo messages directly from the file data. But i agree this is a little tedious.
I might give it a go tonight, I guess once its setup it wont be so tedious BPM -> MPB -> SPB and then use seconds per beat in conjuction with the position output pin from filestream, and divide away to get different beat resolutions lengths in seconds… It’ll be interesting to see how accurate this method is :)
Ok… I’ve made a bit of progress… and taken your advice, cheers oschatz.
I’ve managed to isolate the two hex bytes that specify the “division” in the midi file. but I can’t figure out how to decode them as an integer value in the (Motorola) “Big Endian” byte order within VVVV, (as specified in the MIDI file specification info oschatz so kindly posted a link to :)
