From: Jason W. <jas...@bl...> - 2003-05-18 18:45:01
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On Sunday 18 May 2003 4:19 pm, Reinhard Amersberger wrote: > Hi Jason, > > you can call me penetrant if you want ;-)) ...... but you still haven't > give your opinion about how do you plan to realize transition stuff? That's because I have not really got a plan at this stage :-) All I have is a feature list of what I want to be possible : * It should be possible to perform a transition based upon three or more clips on the timeline. I don't think there is such a thing as a simple example :-) but here is one : a specialised crossfade in which one image crossfades to another on a pixel-by-pixel basis, dictated by the brightness of the pixel in a third movie. * Each clip involved in a transition may itself be a compound clip of transitions.For example, it should be possible to have clip A crossfading into clip B, and then have that sequence wipe into clip C. Of most importance, it should be possible to do this without rendering down the Clip A -> clip B first. * The case of transitioning from one clip to another should be *EXTREMELY SIMPLE* :-) I have before wished that when I was using Adobe Premier that it was capable of doing the first two points, and the third point is enforced by the desire for Kdenlive to be 'user friendly' ;-) The aim is that simple stuff should be easy and hard stuff should be possible. Now, current thoughts going through my head on how to deal with this : firstly, the possible solutions for the simple case of one clip transitioning into another : 1. We have two separate tracks for clips, and a transition track between them. Drag a clip to each track, slightly overlapping, and drag a "transition clip" to the transition track. Advantages : Quite simple. Disadvantages : Doesn't take into account transitions with more than two clips. 2. We use a single track. Drag one clip on to it, drag another clip on and place so that they slightly overlap. The overlapping area automatically turns into a "transition area", which can then be selected to adjust it's properties. Advantages : Simple and efficient. There is no need for a third operation to create a transition, you simply need to overlap to clips on a track. There is no confusion over which track is currently "live" as can happen in AB editing (at least in Premier), since everything occurs on a single track. Disadvantages : When two clips overlap completely, how do you allow selection of the two clips again? We have compressed our timeline from two tracks to one - is that a good thing, or more confusing? There is a third solution which I am thinking of, sort of a cross between the above two ideas, in which a transition would be 'drawn' across multiple tracks (I envisage it as a translucent blue rectangle spanning multuiple clips). This would have the advantage of allowing the transition to touch multiple tracks, but might be complicated to use, I am not sure yet. So as you can see, my thoughts are still pretty fuzzy on the issue :=) Cheers, Jason -- Jason Wood Homepage : www.uchian.pwp.blueyonder.co.uk |