如何重新缩放输入视频，然后使用Ffmpeg缩放和覆盖水印？

Question

How to rescale input video then scale and overlay watermark with Ffmpeg?

I've tried both these commands and they don't work. Can someone help me with the process?

-vf \"movie={watermarkPath}[watermark]; [in] scale=720:-1 [scale]; [scale] [watermark] overlay=main_w-overlay_w-10:10 \"
-filter_complex \"[0:v]scale={wm.Item3}:{wm.Item4}[bg];[bg][1:v]movie='{watermarkPath}'[wm];[wm][0] scale2ref={wm.Item1}:{wm.Item2}[wm] [v];[wm] setsar=1[logo];[v] [logo] overlay=main_w-overlay_w-10:10\"

Answer 1

此答案可能与此处重复，您可以参考以下命令进行缩放和覆盖

ffmpeg -i input.mp4 -i logo.png -filter_complex "[0:v]scale=512:-1[bg];[bg][1:v]overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2" output