Frame Merger 0.1

    Frame Merger filter for virtualdub - Copyright 2002 Valentim Batista
    
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

    The author can be contacted at:
    Valentim Batista
    vb@timsara.freeservers.com
    timsara.freeservers.com


This filter was built to smooth temporally the picture (blending each frame with the previous one) in order to reduce noise, artefacts and the bitrate needed to encode the stream.
Propagation sets that each frame is to be blended with either the previous filter input frame (propagation off) or with the previous filter output frame (propagation on). The first frame is not blended.
Strengths equate to blending proportions: 1 - 12,5% / 87,5 %; 2 - 25% / 75%; 3 - 37,5% / 62,5%; 4 - 50% / 50%.
Propagation effect is visible in the following table showing input frame contributions values to the current output frame with propagation off and propagation on respectively:


2002/04/03