fezzik.dict: prioritize avformat over vorbis module for .ogg, at least until better...

[melted] / demo / mlt_slideshow_black

inigo Scotland/.all.jpg ttl=100 \
-filter watermark:colour:black reverse=1 composite.geometry="15%,15%:10%,10%;0.1625=0,0:100%x100%;-.1625=;-1=70%,70%:10%x10%" composite.mirror_off=1 composite.cycle=100 composite.fill=1 composite.valign=c composite.halign=c \
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