Re: Low precision on time remap
site_archiver@lists.apple.com Delivered-To: pro-apps-dev@lists.apple.com Just my 2 cents on this, 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: Darrin -- Darrin Cardani dcardani@apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.ap... 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. 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? _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/pro-apps-dev/kiel% 40spherico.com This email sent to kiel@spherico.com This email sent to site_archiver@lists.apple.com
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Andreas Kiel