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提取视频某一帧并和现有图像叠加 #10

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xhlove opened this issue Oct 6, 2019 · 0 comments

xhlove commented Oct 6, 2019 •

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目的：
提取input.mp4的第1024帧，并叠加在backround.jpg的(100,50)处
我尝试使用如下命令，但它生成的图和backround.jpg是一样的

ffmpeg -i "input.mp4" -i backround.jpg -filter_complex [0:v]select=eq(n\,1024)[frame];[1:v][frame]overlay=100:50 -frames:v 1 output.jpg -y

快速生成一个backround.jpg

ffmpeg -f lavfi -i color=c=0xcaff70:s=3840x2160 -vframes 1 backround.jpg -y

如果单独提取指定帧生成图像文件，再作为输入是可行的，如果想直接得到最终输出，有办法实现吗？

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