安装ffmpeg
https://github.com/BtbN/FFmpeg-Builds/releases
或者
https://www.gyan.dev/ffmpeg/builds/
Windows最新版：
https://www.gyan.dev/ffmpeg/builds/ffmpeg-release-full.7z
设置Windows系统变量
Environment Variables -> User variables for USERNAME -> path -> new( or edit on windows7)
添加mmpeg安装路径 例如：
c:/mmpeg/bin/
建立目录结构
目标结构
定位到Video文件夹之后，新建一个同视频名称的目录
md media\some_fun_video_name\hls
使用mmpeg命令生成多种尺寸码率视频及m3u8列表
ffmpeg -i some_fun_video_name.mp4 -profile:v baseline -level 3.0 -s 640x360 -start_number 0 -hls_time 10 -hls_list_size 0 -f hls ./media/some_fun_video_name/hls/360_out.m3u8
ffmpeg -i some_fun_video_name.mp4 -profile:v baseline -level 3.0 -s 800x480 -start_number 0 -hls_time 10 -hls_list_size 0 -f hls ./media/some_fun_video_name/hls/480_out.m3u8
ffmpeg -i some_fun_video_name.mp4 -profile:v baseline -level 3.0 -s 1280x720 -start_number 0 -hls_time 10 -hls_list_size 0 -f hls ./media/some_fun_video_name/hls/720_out.m3u8
ffmpeg -i some_fun_video_name.mp4 -profile:v baseline -level 3.0 -s 1920x1080 -start_number 0 -hls_time 10 -hls_list_size 0 -f hls ./media/some_fun_video_name/hls/1080_out.m3u8
ffmpeg -i 输入文件名.mp4 -profile:v baseline -level 3.0 -s 长x宽 -start_number 0 -hls_time 切割单文件时长秒 -hls_list_size 0 -f hls 输出路径/输出文件名.m3u8
然后在转换好的目录 hls 下，新建一个文件作为主播放列表
some_fun_video_name.m3u8
内容如下
#EXTM3U
#EXT-X-STREAM-INF:BANDWIDTH=375000,RESOLUTION=640x360
360_out.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=750000,RESOLUTION=854x480
480_out.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=2000000,RESOLUTION=1280x720
720_out.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=3500000,RESOLUTION=1920x1080
1080_out.m3u8
批处理
手动输入比较麻烦，可以使用批处理对单个视频进行转换。
将下面的代码保存为一个.bat文件，在windows中将想要处理的文件拖放到这个bat里，就会自动执行。
前提是，视频文件必须是mp4 h264格式视频，且视频文件bat文件必须在同一个目录中。
@echo off
echo The filename: %~n1
echo The extention: %~x1
REM Make new directories in the same folder.
md media\%~n1\hls
REM Get the cover jpg and preview gif from video
ffmpeg -i %~n1%~x1 -ss 20.00 -vframes 1 ./media/%~n1/hls/cover_h1.jpg
ffmpeg -i %~n1%~x1 -ss 20.00 -vframes 1 -s 760x428 ./media/%~n1/hls/cover_l1.jpg
ffmpeg -ss 00:00:10 -t 3 -i %~n1%~x1 -s 640x360 -r 2 ./media/%~n1/hls/preview.gif
REM Start to work on videos
ffmpeg -i %~n1%~x1 -profile:v baseline -level 3.0 -s 640x360 -start_number 0 -hls_time 10 -hls_list_size 0 -threads 5 -preset ultrafast -f hls ./media/%~n1/hls/360_out.m3u8
ffmpeg -i %~n1%~x1 -profile:v baseline -level 3.0 -s 800x480 -start_number 0 -hls_time 10 -hls_list_size 0 -threads 5 -preset ultrafast -f hls ./media/%~n1/hls/480_out.m3u8
ffmpeg -i %~n1%~x1 -profile:v baseline -level 3.0 -s 1280x720 -start_number 0 -hls_time 10 -hls_list_size 0 -threads 5 -preset ultrafast -f hls ./media/%~n1/hls/720_out.m3u8
ffmpeg -i %~n1%~x1 -profile:v baseline -level 3.0 -s 1920x1080 -start_number 0 -hls_time 10 -hls_list_size 0 -threads 5 -preset ultrafast -f hls ./media/%~n1/hls/1080_out.m3u8
REM Check if any error
if %ERRORLEVEL% == 0 goto :next
echo "Errors encountered during execution. Exited with status: %errorlevel%"
goto :endofscript
:next
echo "Generating overall m3u8 play list...."
REM Generate an overall play list.
(
echo #EXTM3U
echo #EXT-X-STREAM-INF:BANDWIDTH=375000,RESOLUTION=640x360
echo 360_out.m3u8
echo #EXT-X-STREAM-INF:BANDWIDTH=750000,RESOLUTION=854x480
echo 480_out.m3u8
echo #EXT-X-STREAM-INF:BANDWIDTH=2000000,RESOLUTION=1280x720
echo 720_out.m3u8
echo #EXT-X-STREAM-INF:BANDWIDTH=3500000,RESOLUTION=1920x1080
echo 1080_out.m3u8
) > ./media/%~n1/hls/%~n1.m3u8
echo "Overall m3u8 play list generated."
goto :endofscript
:endofscript
echo "Work complete."
pause
#HLS #流媒体
引用关闭，但你能.