YUV文件的操作：10bit转8bit，分辨率下采样

1.10bityuv转8bit

./ffmpeg -s 3840*1920 -pix_fmt yuv420p10le -i input.yuv -s 3840*1920 -pix_fmt yuv420p out_yuv420p.yuv

2.4k分辨率转1080p，同时10bit转8bit

./ffmpeg -s 3840*1920 -pix_fmt yuv420p10le -i input.yuv -filter_complex scale=1920:1080 -pix_fmt yuv420p out_yuv420p.yuv

3.待添加