FFMPEG An Intermediate Guide/watermarks

FFmpeg offers the overlay filter as a way to overlay images (or even other videos) onto video streams. To centre overlay/watermark on a video, use this command:http://stackoverflow.com/questions/10918907/how-to-add-transparent-watermark-in-center-of-a-video-with-ffmpeg ffmpeg -i inputvideo.avi -i watermarklogo.png -filter_complex \ "overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2" -codec:a copy output.flv -vf is used for simple filtergraphs (one input, one output), and -filter_complex is used for complex filtergraphs (one or more inputs, one or more outputs). Using -filter_complex will allow you omit the movie multimedia source filter and have a shorter command. The audio is simply stream copied (remuxed) in this example with -codec:a copy instead of being re-encoded. You may have to re-encode depending on your output container format. See the documentation on the overlay video filter for more information and examples. For example, you could use aliases to shorten the command: overlay=(W-w)/2:(H-h)/2 See the FFmpeg H.264 Video Encoding Guide for more information on getting a good quality output. References