ffmpeg -y -i test.mp4 -i bkg.png -filter_complex “[0:v]drawtext=fontfile=PingFang-SC-Regular.ttf:text='检查.....':fontcolor=white:fontsize=36:x=200:y=200:enable='如果(gt(t,10),lt(t,20))'[text];[text][1:v]overlay=x=180:y=180:enable='如果(gt(t,9.9),lt(t,20))'[out]” -map “[out]” out.mp4
怎么把图片水印放在最前面?我要把文字放在图片上