Newbie - custom video timeline controls
Newbie - custom video timeline controls
- Subject: Newbie - custom video timeline controls
- From: dan donaldson <email@hidden>
- Date: Mon, 31 May 2004 09:53:56 -0400
I'm sorry if this has been covered elsewhere. I haven't found what I'm
after in the archives.
I'm looking for an existing open source (or cheap...) control that
works the way the timeline controllers in (eg) After Effects or
FinalCut work. The essential features are:
- presents a timeline of flexible length that the user can move along,
by dragging or numeric entry, etc.;
- provides a means of controlling the amount of magnification of the
timeline;
- provides a means of setting and reading the center point on the
timeline that is magnified.
nice features would be:
- a way of indicating markers or points of interest like keyframes
along the timeline;
- a way of displaying multiple channels along the timeline;
really really nice features would be:
- drawing a bezier curve along the channels representing a quanitity
that changes over time in a channel;
- a way of allowing the user to modify those quantities by manipulating
the bezier curve.
- a means of copying/pasting sections of the timeline between channels.
Because this exists in quite a few applications, I wonder if anyone
knows where I could find one I can use for my (noncommercial) app. But
failing that, can someone offer comment on the likelihood that a
relative newbie (with lots of Flash, PHP and Lingo experience) could
pull this off? Tutorials or starting points? I've developed a interface
that works but lacks elegance, using the stock controls. But why use a
Mac if you aren't interested in elegance?
Your assistance/advice much appreciated.
FYI, the project is a sequencing controller for a series of
microcontroller cards talking via serial ports to the mac, and
controlling a slew of servos. for this I'm already indebted to the nice
folks at Harmless Cocoa whose serial code I've been using.
dan donaldson
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