how to watermark mp4 video with ffmpeg php

Question

我需要为 mp4 视频加水印，目前我正在使用此代码，但它不起作用，请解决此问题

<? exec('ffmpeg -i movie.mp4 -i logo.png -filter_complex overlay output.mp4');?>

Answer 1

You need to put the filter code within double quotes. If you could share more about the error you're facing, I'll be able to help you better.

<? exec('ffmpeg -i movie.mp4 -i logo.png -filter_complex "overlay" output.mp4');?>