视频切片技术【转载】-Hpeak.cn

最近接触视频的比较多，发现一种视频转码，有助于防止浏览器获得视频的链接，以防止下载视频（适用于数量不多的视频上传）Ffmpeg：是一套可以用来记录、转换数字音频、视频，并能将其转化为流的开源计算机程序。采用LGPL或GPL许可证。它提供了录制、转换以及流化音视频的完整解决方案。

Windows下安装ffmpeg：

1.FFmpeg下载：http://ffmpeg.zeranoe.com/builds/

2.下载并解压FFmpeg文件夹，它会生成一个类似名为“ffmpeg-20170605-4705edb-win64-static.zip”的新文件夹，解压到d盘。

3.配置FFmpeg环境变量：

点击“开始菜单”，再点击“控制面板”，再点击“系统”，然后点击“高级系统设置”，跳出“系统属性”窗口后，最后点击“环境变量”按钮，在“Path”变量原有变量值内容上加上“;d:\ffmpeg\bin”：（如下图所示）

4.打开命令提示符窗口（cmd）。输入命令“ffmpeg –version”。如果命令提示窗口返回FFmpeg的版本信息（如下图所示），那么就说明安装成功了，你可以在命令提示行中任意文件夹下运行FFmpeg。

使用：MP4转为m3u8我也是初学，只了解了一点点下面是MP4转为m3u8的代码，贴出来，讲讲其中参数的含义ffmpeg -i 1.mp4 -f segment -segment_time 60 -segment_format mpegts -segment_list list_file.m3u8 -c copy -bsf:v h264_mp4toannexb -map 0 output_file-%d.ts
参数说明：
-i : 引入视频源（1.mp4: 视频名称）
-segment_time: 切片的时长（60秒）
-segment_format: 来指定输出格式为mpegts
-segment_list: 用来配置输出的列表文件名（输出list_file.m3u8文件）
-c copy: 拷贝原文件
-map file:stream 设置输入流映射
-codec:v : 视频格式
-codec:a : 音频格式

本文转载于：https://blog.yayuanzi.com/21482.html

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