使用批处理脚本（BAT）调用FFMPEG批量编码视频
使用批处理脚本（BAT）编码视频非常方便，尤其当视频序列非常多的时候，更是省了不少简单重复性劳动。
只要学会批处理里面几个基本的命令就行了，感觉和c/c++差不多。
set：设置变量（注意：变量一般情况下是字符串，而不是整形或者其他类型）
%变量名%：可以取到变量的值
传上来一个做实验的批处理脚本做示范（其中调用了ffmpeg和x264）：
@echo off @rem 使用此脚本生成实验序列 @rem 设置序列名称 set xuliename=src08 @rem 帧率分辨率比特率参数 set resolution1=1920x1080 set resolution2=1280x720 set resolution3=848x480 set resolution4=640x360 set resolution5=480x272 set framerate1=25 set framerate2=20 set framerate3=15 set framerate4=12.5 set framerate5=10 set framerate6=5 set bitrate1=254 set bitrate2=508 set bitrate3=763 set bitrate4=1017 set bitrate5=1526 set bitrate6=2035 set bitrate7=2544 @rem 生成特定分辨率，然后再进行上变换 ffmpeg -s %resolution1% -i %xuliename%_%resolution1%.yuv -s %resolution2% %xuliename%_%resolution2%.yuv ffmpeg -s %resolution1% -i %xuliename%_%resolution1%.yuv -s %resolution3% %xuliename%_%resolution3%.yuv ffmpeg -s %resolution1% -i %xuliename%_%resolution1%.yuv -s %resolution4% %xuliename%_%resolution4%.yuv ffmpeg -s %resolution1% -i %xuliename%_%resolution1%.yuv -s %resolution5% %xuliename%_%resolution5%.yuv @rem ======================= ffmpeg -s %resolution2% -i %xuliename%_%resolution2%.yuv -s %resolution1% -vcodec rawvideo %xuliename%_reHD_%resolution2%.avi ffmpeg -s %resolution3% -i %xuliename%_%resolution3%.yuv -s %resolution1% -vcodec rawvideo %xuliename%_reHD_%resolution3%.avi ffmpeg -s %resolution4% -i %xuliename%_%resolution4%.yuv -s %resolution1% -vcodec rawvideo %xuliename%_reHD_%resolution4%.avi ffmpeg -s %resolution5% -i %xuliename%_%resolution5%.yuv -s %resolution1% -vcodec rawvideo %xuliename%_reHD_%resolution5%.avi @rem 原始分辨率 ======================= ffmpeg -s %resolution1% -i %xuliename%_%resolution1%.yuv -s %resolution1% -vcodec rawvideo %xuliename%_reHD_ori.avi @rem 生成特定帧率 ffmpeg -s %resolution3% -i %xuliename%_%resolution3%.yuv -r %framerate2% -vcodec rawvideo %xuliename%_fps_%framerate2%.avi ffmpeg -s %resolution3% -i %xuliename%_%resolution3%.yuv -r %framerate3% -vcodec rawvideo %xuliename%_fps_%framerate3%.avi ffmpeg -s %resolution3% -i %xuliename%_%resolution3%.yuv -r %framerate4% -vcodec rawvideo %xuliename%_fps_%framerate4%.avi ffmpeg -s %resolution3% -i %xuliename%_%resolution3%.yuv -r %framerate5% -vcodec rawvideo %xuliename%_fps_%framerate5%.avi ffmpeg -s %resolution3% -i %xuliename%_%resolution3%.yuv -r %framerate6% -vcodec rawvideo %xuliename%_fps_%framerate6%.avi @rem 原始帧率 ======================= ffmpeg -s %resolution3% -i %xuliename%_%resolution3%.yuv -r %framerate2% -vcodec rawvideo %xuliename%_fps_ori.avi @rem 生成特定比特率 x264 --bitrate %bitrate1% -o %xuliename%_bit_%bitrate1%.flv %xuliename%_%resolution3%.yuv x264 --bitrate %bitrate2% -o %xuliename%_bit_%bitrate2%.flv %xuliename%_%resolution3%.yuv x264 --bitrate %bitrate3% -o %xuliename%_bit_%bitrate3%.flv %xuliename%_%resolution3%.yuv x264 --bitrate %bitrate4% -o %xuliename%_bit_%bitrate4%.flv %xuliename%_%resolution3%.yuv x264 --bitrate %bitrate5% -o %xuliename%_bit_%bitrate5%.flv %xuliename%_%resolution3%.yuv x264 --bitrate %bitrate6% -o %xuliename%_bit_%bitrate6%.flv %xuliename%_%resolution3%.yuv x264 --bitrate %bitrate7% -o %xuliename%_bit_%bitrate7%.flv %xuliename%_%resolution3%.yuv @rem ffmpeg -i %xuliename%_bit_%bitrate1%.flv -vcodec rawvideo %xuliename%_bit_%bitrate1%.avi ffmpeg -i %xuliename%_bit_%bitrate2%.flv -vcodec rawvideo %xuliename%_bit_%bitrate2%.avi ffmpeg -i %xuliename%_bit_%bitrate3%.flv -vcodec rawvideo %xuliename%_bit_%bitrate3%.avi ffmpeg -i %xuliename%_bit_%bitrate4%.flv -vcodec rawvideo %xuliename%_bit_%bitrate4%.avi ffmpeg -i %xuliename%_bit_%bitrate5%.flv -vcodec rawvideo %xuliename%_bit_%bitrate5%.avi ffmpeg -i %xuliename%_bit_%bitrate6%.flv -vcodec rawvideo %xuliename%_bit_%bitrate6%.avi ffmpeg -i %xuliename%_bit_%bitrate7%.flv -vcodec rawvideo %xuliename%_bit_%bitrate7%.avi
