Unable to find a suitable output format for 'overlay=main_w-overlay_w-10:main_h-overlay_h-0"' overlay=main_w-overlay_w-10:main_h-overlay_h-0": Invalid argument

[NULL @ 0x204c7a0] Unable to find a suitable output format for 'overlay=main_w-overlay_w-10:main_h-overlay_h-0"' overlay=main_w-overlay_w-10:main_h-overlay_h-0": Invalid argument

ffmpeg 加水印结果出现这种情况

原来的：

ffmpeg -i 16119049992dac38f0730b81df.mp4  -vf "movie=watermark.png[watermark];[in][watermark] overlay=main_w-overlay_w-10:main_h-overlay_h-0[out] " f49c1930e3f92298b35e22afe87705fe.mp4

解决方法：

ffmpeg -i 16119049992dac38f0730b81df.mp4 -itsoffset 8.6 -i watermark.png  -filter_complex overlay=W-w:56 f49c1930e3f92298b35e22afe87705fe.mp4