jit.qt.record - realtime issues and sound


    Mar 04 2006 | 12:34 pm
    I've found a whole bunch of stuff online about jit.qt.record, and I'm
    pretty sure I understand how it works, but I'm not too sure about a
    workaround for what I want. It seems like this should be easy, but....
    Yesterday, I started what I thought would be a simple patch.
    Basically, I want to take a source movie and remove all frames that
    have an amplitude above or below a certain number (maybe both, but
    that's the easy part), keeping the sound for the frames that pass
    through intact. My first problem was that spigot~ doesn't work on
    10.4.4, but I got around that with soundflower. I have two other
    problems:
    1. If I enable realtime, I get static frames (keeps sending the same
    one through) when the amplitude does not pass my test. If I disable
    realtime, the time distorts. Happy medium of only record when
    actually sending frames but do it in real time? Other suggestions?
    2. No sound - I can't just record an aiff, as I only want sound when
    a frame gets sent through, and I want it perfectly synced.
    I really thought this would just be jit.qt.movie, spigot~ and meter~
    with < and sel, jit.qt.record, and a few spares. I guess I completely
    misunderstood jit.qt.record's capabilities, cuz with the above
    issues, it seems like a much longer project that might require a fair
    amount of Final Cut intervention (taking away the generative aspect I
    kind of liked about this short-term patch play). Can anyone help with
    an elegant solution(s)? I'd really appreciate any and all help.
    my test patch so far (note that I'm using soundflower to route max's
    sound back into itself):
    thanks so much in advance,
    nathaniel

    • Mar 04 2006 | 1:36 pm
      ok. I mostly figured out the timing issue (just some calculations
      with messages boxes to write, metro and meter~); it's just that both
      peakamp and meter~ truncate the interval decimals, and I'm not sure
      how that'll work out with sound when I try to sync it. Anyone have
      any ideas about this and/or how to record the sound only when frames
      are passed through? Thanks again,
      nathaniel
    • Mar 04 2006 | 3:16 pm
      Apologies for list-clog. I feel like this patch should do it, but not
      so much.