[FFmpeg-user] ffmpeg: slide show on Windows

[Michael Koch]

Am 17.11.2020 um 14:09 schrieb RAPPAZ Francois via ffmpeg-user:
> Thanks that was it
>
> And if I Would like to have each image shown during 15 seconds (I have 15 pictures and  whants the total time being 225 sec), How should I specified the -framerate and -r ? I tried
> ffmpeg -y -f image2 -framerate 1/5 -i %%02d.JPG -i SligoAir_WhiteBlanket.mp3 -vsync vfr  -r 15 -pix_fmt yuv420p output.mkv
>
> But that it's too short a time for each picture

"-framerate 1/5" specifies the framerate at which you read the pictures, 
1/5 means 5 seconds.
"-r" is the output framerate. If you omit this option, then the default 
25fps is used. Some players have problems with small framerates.
If you want crossfadings between the pictures, have a look at chapter 
2.3 in my book:
http://www.astro-electronic.de/FFmpeg_Book.pdf

Michael