[FFmpeg-user] Slide show with transition

RAPPAZ Francois francois.rappaz at unifr.ch
Tue Nov 17 17:05:56 EET 2020

I have 15 JPEG file to be used for a slide (duration: 135 sec): Each image is display 9 seconds and without transition the mkv file is ok.
I tried this for a transition 1 second long

ffmpeg -y -framerate 1/9 -i %%02d.JPG -i SligoAir_WhiteBlanket.mp3 ^
-vf zoompan=d=9:fps=1,framerate=fps=15:interp_start=0:interp_end=255:scene=100 ^
-r 15 -vsync vfr -pix_fmt yuv420p output.mkv

The transition is ok for the first 3 image then the slide jump to image at position 10 and that picture remains blocked...
What am I doing wrong ?


François Rappaz

Bibliothek der Mathematisch-Naturwissenschaftlichen und Medizinischen Fakultät
Bibliothèque de la Faculté des sciences et de médecine
Rue du musée 4
Université de Fribourg CH-1700 Fribourg Switzerland
Tel.: 41 (0)26 300 92 60
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