Next this scaled pip video and video at index=0 i.e. The scaled version of pipInput2.flv video has named as pip in the filter chain. pipInput1.flv has index 0 and pipInput2.flv has index 1. Scale option will reduce the size of the video having index=1 to width=w/5 and height=h/5.Indexing of files starts with 0 i.e. filter_complex 'scale=iw/5:ih/5 overlay=main_w-overlay_w-10:main_h-overlay_h-10'

In this command, there are two filters one after the other in chain.First filter scale down one video, and second filter overlays one video on another. Filters in the same linear chain are separated by commas, and distinct linear chains of filters are separated by semicolons.The points where the linear chains join are labelled by names enclosed in square brackets.

Ffmpeg -i pipInput1.flv -i pipInput2.flv -filter_complex 'scale=iw/5:ih/5 overlay=main_w-overlay_w-10:main_h-overlay_h-10' -profile:v main -level 3.1 -b:v 440k -ar 44100 -ab 128k -s 720x400 -vcodec h264 -acodec libfaac PIP_output1.mp4įilters in ffmpeg are used configure input file parameters based on some multiple parallel processing.Filters can have multiple inputs and multiple outputs.

Ffmpeg mp4 to image