[Mlt-devel] Git: Enhance luma filter to work with animated filters.

[Dan D. <da...@de...>]

 demo/mlt_slideshow2            |    8 ++++++
 src/modules/core/filter_luma.c |   49 ++++++++++++++++-----------------------
 2 files changed, 28 insertions(+), 29 deletions(-)

New commits:
commit 700436764eeb2f4cc0c48fc9763d9bf4375f273f
Author: Dan Dennedy <da...@de...>
Date:   Sat Aug 21 01:44:49 2010 -0700

    Enhance luma filter to work with animated filters.
    
    Previously, in a slideshow the luma filter would apply the dissolve or
    wipe repeatedly over a slide. For example, with a slide duration of 75
    frames and a luma period of 25 (expressed as 24), the wipe occurs 3
    times. However, since the slides were static, you did not notice it
    until the transition at the beginning of a new slide - when you do want
    to see it. However, upon adding an affine filter to animate a smooth
    pan/zoom, you do notice the extra repetitions - the slides appear to
    blend with one another when they are not transitioning.
    
    This change fixes that with new properties 'cycle' and 'duration'. Cycle
    is basically a replacement for 'period' that fixes the semantics to
    properly represent a duration. Where you would previously express, for
    example, period=24, you now say cycle=25. The 'duration' property
    prevents the repeating and expresses that the transition should only
    occur within the first N frames of the cycle. See demo/mlt_slideshow2
    for an example of using it in conjunction with the affine filter!