[PD] line~ for syncing to video

[Hans-Christoph Steiner]

What I am working on are tools for composing audio to someone else's  
video.   I've worked on a couple projects like this, I am in the  
midst of one know.  Basically, think sound design for a movie and  
things like it.  They generate the movie, and so far, I have found  
the easiest way to communicate with the people making the video is to  
use frame numbers.

Therefore, to compose my sound, I need to frame numbers as a  
reference.  Therefore, I need to generate line data from video frame  
numbers, unless someone has a better idea.  If the video guys tell  
me, "this animation starts on frame 1234 and ends on 1623", then it  
seems to me that I want to be using frame numbers as my triggers.

.hc

On Oct 31, 2008, at 11:08 AM, chris clepper wrote:

> Cyrille points out the correct method of syncing video to an audio  
> clock.  All hardware devices and professional software use the  
> audio to clock the video.
>
> On Fri, Oct 31, 2008 at 4:48 AM, cyrille henry <cyrille.henry at la- 
> kitchen.fr> wrote:
> hello,
>
> i'm wondering why did you sync audio on video : i think it is  
> easier to sync the video on the audio.
> just make all the line~ as you wish for the audio, then snapshot~  
> periodically and convert audio position to frame number...
>
> cyrille
>
>
> Hans-Christoph Steiner a écrit :
> > I am trying to make a version of [line~] that gives me a line based
> > on the frame numbers I give it.  Basically, I give it a frame  
> counter
> > in the first inlet, then start frame and stop frame as arguments.
> > The hard part is that I want it to behave like [line] in that the
> > last value stays in effect until something else overrides it.
> >
> > How do I do that with DSP data?  If I use [switch~], then the
> > [outlet~] will just retain its last value.
> >
> > .hc
> >
> >
> >  
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