首先放一个两路视频合并的例子
ffmpeg -pix_fmt rgb24 -s 960x960 -i bag_level_7_renderSize_1_960x960_8bits_rgb24i.rgb -pix_fmt rgb24 -s 960x960 -i bag_level_7_renderSize_1_960x960_8bits_rgb24i.rgb -filter_complex "[0:v]pad=iw*2:ih[a];[a][1:v]overlay=w*1" -pix_fmt rgb24 out.rgbffmpeg -pix_fmt rgb24 -s 960x9
