[Kdenlive-devel] transitions

[Rolf Dubitzky]

What I think of looks something like the attached pic. 

Whatever it will look like in the end. There are some important features we 
should not miss:

- easy to see at which frame the effect starts/stops

- easy to see which tracks are actually involved in the effect.

- if the effect is a transition, it must be clearly visible if
  the direction is the right one (A->B or B->A)

- easy to select the transition object.
  if the effects is selected, the should be a dialog embedded
  somewhere to change the transition parameters.

- easy to move/resize the transition, i.e. there need to be mouse
  handles and/or the mouse cursor must indicate that the tarnsition
  will be modified with the following mouse action.

- if possible, show which kind of effect (name)


In the example I gave in the attached pic you can even modify the effect if 
you drag the red handles of the effect line. This is possible with audio in 
MovieDVPro and I like the feature pretty much, but it would be sufficient to 
present such a line in a separate dialog in case the effect is selected.

And before we thnk about three track effects, there is something much more 
important and maybe difficult. We need to think about how to visualize the 
audi part of the track. We need to visualize a transition there too. This is 
seperate to the video transition. Also the cut might be at a different place. 
A veary simple and common kind of cut is, to show video A and fade in sound 
from track B for a while. After a few seconds, switch the video from A to B 
to. That is a simple and powerfull way to soften rough cuts and I think it 
would be nice to have this possibility in kdenlive.


Cheers,
Rolf

***************************************************************
 Rolf Dubitzky          http://hep.phy.tu-dresden.de/~dubitzky
 e-mail:         Rolf.Dubitzky at Physik dot TU-Dresden dot de
***************************************************************


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