Re: Low precision on time remap
Re: Low precision on time remap
- Subject: Re: Low precision on time remap
- From: Andreas Kiel <email@hidden>
- Date: Tue, 17 Feb 2009 00:53:18 +0100
Just my 2 cents on this,
The speed change - which will be okay in most cases - does work fine.
You should use the timecode entry in the panel instead of the percent
entry.
The XML allows you set up pretty exact the speed changes by keyframe,
but it's complicated as you have to calculate the Bezier handlers of
the keyframes In/Out to get a smooth match if you got more than 2
(beginning and end). I wouldn't recommend do something like that.
Check the actual "off", recalc the real time and it works. You also
can put the audio into a QT-Wrapper file and go from there.
It's easier and cheaper to get a device which runs a good quartz
clock to keep the sampling rate. Even my little 200 USD ZOOM does it
it for a concert.
As said just my 2 cents
Andreas
On 16.02.2009, at 18:34, Darrin Cardani wrote:
On Feb 14, 2009, at 11:50 PM, Bruce Sharpe wrote:
I want to overlay clips from recording devices that are free-running
(not jam-synched). Even though most of the clocks are pretty
accurate, these are clips of live events that last a long time and
over the course of many minutes it is not unusual for them to drift
apart from one another by an amount that needs to be corrected. Time
remap seems like a good mechanism to adjust things back into sync.
But the speed value only seems to be able to retain numbers up to a
precision of two decimal places. For example, enter 100.12345 in the
user interface and 100.133 is what gets stored in the XML, which is
not even rounded properly. The residual error over the length of an
hour can be hundreds of milliseconds, which is not acceptable for
many
synchronization purposes.
I can't figure out if this is an artifact of the user interface or
some fundamental limitation. Is there a sneaky way to specify a
remap
speed with greater precision?
Just curious - what happens if you modify the XML by hand and put
in the extra precision digits? Does the app actually use them?
Darrin
--
Darrin Cardani
email@hidden
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