Re: Start frame number of a clip
Re: Start frame number of a clip
- Subject: Re: Start frame number of a clip
- From: Lyndon Hill <email@hidden>
- Date: Mon, 04 May 2015 17:16:25 +0100
Hi Darrin,
> But I believe that many other developers have been successfully using -startTimeForEffect: and -durationForEffect: in the meantime.
That doesn’t work for me: I need to know the start frame number relative to the clip the filter is being applied to. -startTimeForEffect gives the frame number relative to the timeline.
My filter needs to calculate some weighty frame analysis for all frames in the clip. If I know the start and end frames I can re-use analysis that covers frames in that range whenever trim is changed. Without knowing start and end frames my filter will have to recompute everything each time the clip is trimmed. The user experience will be like running in mud.
thanks
Lyndon Hill
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