Quote Originally Posted by bplex View Post
It's pretty simple to do. However, it isn't as simple to setup and get going. The problem is that ffmpeg comes with an avfilter that is slightly outdated compared to the avfilter that supports the "movie" filter (the movie filter allows for you to overlay watermarks over your videos). You would need to uninstall ffmpeg, checkout the latest avfilter (on the ffmpeg svn server), run the checkout script in the avfilter directory (which pulls the latest ffmpeg), then recompile ffmpeg enabling avfilter (--enable-avfilter) and the movie filter (--enable-filter=movie). Once you do that, you can then add:

Code:
vf "movie=0:png:yourwatermark.png [wm];[in][wm] overlay=0:0:1 [out]"
To your conversion string. I have not seen a tutorial on this anywhere, but this does work as I use it for a site that I manage.

Very true! I searched this topic on google for over 4 hours. Could not find any tutorials on it at all!