如何使用ffmpeg快速分割批量視頻？

Question

我有很多視頻，所以我想自動分割它們。他們將分爲兩個部分：

• 第1部分：15分鐘
• 2部分：其餘

搜索了很多，但沒有找到。請幫忙。

Answer 1

使用-ss和-t選項：

ffmpeg -i input -t 00:15:00 -codec copy output 
ffmpeg -ss 00:15:00 -i input -codec copy output 

從FFmpeg documentation：

-ss position (input/output) 
     When used as an input option (before "-i"), seeks in this input 
     file to position. Note the in most formats it is not possible to 
     seek exactly, so ffmpeg will seek to the closest seek point before 
     position. When transcoding and -accurate_seek is enabled (the 
     default), this extra segment between the seek point and position 
     will be decoded and discarded. When doing stream copy or when 
     -noaccurate_seek is used, it will be preserved. 

     When used as an output option (before an output filename), decodes 
     but discards input until the timestamps reach position. 

     position may be either in seconds or in "hh:mm:ss[.xxx]" form. 

    -t duration (output) 
     Stop writing the output after its duration reaches duration. 
     duration may be a number in seconds, or in "hh:mm:ss[.xxx]" form. 

     -to and -t are mutually exclusive and -t has priority. 

的例子使用-codec copy使用stream copy模式，而不是再編碼的。