Applying Watermark With FFMpeg

Assuming you have a watermark png file 'watermarklogo.png' and a input file 'screenCap.mpg', you can apply a watermark in the upper right hand corner by running the following command:

$ ffmpeg -i screenCap.mpg -vf "movie=watermarklogo.png [watermark]; [in] [watermark] overlay=main_w-overlay_w-10:10 [out]" /var/tmp/foo.mpg

Cheers.