ffmpeg overlay size

Question

I have the following ffmpeg command which puts an overlay image over the video. After ffmpeg encoding is done the overlay image appears too big, bigger then it's actual size. How do i control width and height dimensions for the overlay image.

ffmpeg -i 1.wmv -s 640x360 -f mp4 -b 800k -acodec libfaac -ab 64k -vf "movie=0:png:dollar.png [wm];[in][wm] overlay=0:0:1 [out]" out.mp4

Answer 1

Try this worked for me : ffmpeg -i basevideo.xxx -vf "movie=overlayvid.xxx [in]; [in] scale=width:height [scale]; [in][scale] overlay=x:y [out]" output.xxx

Answer 2

Try appending filter settings with scale=width:height clause like this:

ffmpeg -i 1.wmv -s 640x360 -f mp4 -b 800k -acodec libfaac -ab 64k -vf "movie=0:png:dollar.png, scale=120:120 [wm];[in][wm] overlay=0:0:1 [out]" out.mp4