2011-08-01 95 views

回答

32

使用-t選項來指定一個時間限制:

`-t duration' 
    Restrict the transcoded/captured video sequence to the duration specified in seconds. hh:mm:ss[.xxx] syntax is also supported. 

http://www.ffmpeg.org/ffmpeg.html

+0

我們如何可以設置輸出持續時間一樣長的輸入,像規模possibilty與-1? – PeterCo

+1

注意:這需要放在命令中間的某處,如下所示:'ffmpeg -i input.mp3 -t 00:05:00 output.mp3' –

+0

如何計算持續時間取決於drawtext文本的寬度滾動? – manish1706

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