video to bpm

qewrty's picture

Hi everyone. I need some suggestions on how to achieve a little video player that will be able to play clips to a tempo, BPM. I need to be able to either type the tempo in or be able to tap it in via midi or some sort of controller. I don’t know if there’s any thing similar out there already. Please let me know if you have any ideas.

Thanks

GL's picture
Re: video to bpm

Hi, I work with two principles . . . .

  1. I cut my movies on 120 BPM.

  2. program all timebased events on 120BPM. Together with vades Movieplayer, interpolation and some math I can sync a movie to the BPM. Works good for the flow. If you make your sliders as an index you can multiply the time / period in a nice way (twice fast of four times slower, etc etc) . . . . if you publish just two or three sliders you can allready make a lot of variation.

I set the BPM manually (look to the DJ's software or with a BPM-tap-app) and it's connected to all parts with I want to sync to the BPM

harrisonpault's picture
Re: video to bpm

hi qerty,

This sort of thing is generic in vj apps, and the CoGe application actually uses little quartz compositions for its movie players. I am attaching a slightly hacked copy of one from a long ago beta of that software, before it got very sophisticated. It may help you sort out what you want to do, although even this simple one is designed to work in an environment where beat, current bpm, the source media file path, and whether the media has changed are all being fed to the patch.

That said, depending on what you need to do in full you might consider looking at the current CoGe software http://www.cogevj.hu/, which can be demoed for free and runs fine (just no saving projects). That will give you already the bpm tap in or type in, midi controller sensitivity, and movie players with built in speed controls. So you don't have to write any code. You can also examine the player compositions for more ideas.

Paul

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BPM_Adjust_and_Stretch.qtz8.75 KB