Thanks to everyone who commented on this post - your ideas are very
helpful and remind me how great the "open source" movement is.
Happy Holidays!
Keith
p...@ichthyostega.de wrote:
Keith Gudger schrieb:
If I just use "jump" cuts between stills, there are about 2 frames where I
have the wrong camera settings. This seems to be because Cinelerra can not
instantaneously (i.e., at the beginning of 1 frame) change the camera
settings.
yeah, indeed, that is due to a deeply rooted design decision in the
existing Cinelerra codebase. My guess would be that this part has been
designed from a developers point of view (because, when viewed from
"within" the source code, it looks quite reasonable). But due to
this decision, using keyframes precisely in Cinelerra very tedious.
Basically, in Cinelerra a frame is displayed *after* the current
position has passed over this frame. Moreover, any keyframe's
values are effective for any time *after* the keyframe.
It is indeed possible to get an instantanous change of Parameters,
but you need to do it exactly in the following way:
+----+----+----+--
K1 K2
^Start of the new footage
^first frame of new gets visible
There, K1 would be a keyframe with the old settings and K2
should contain the new settings.
When working with this kind of stuff in single-step mode, the
currently displayed frame is inconsistent with the above, but
this is just the display. The same holds true when playing/stepping
backwards (because then the direction of the logic is completely
reversed). Again, rendering proceeds forward and finally that's
what counts.
hope that helps
Cheers,
Hermann V.
