matlab - 下面的截图功能是否可能比一秒更准确？ (MATLAB，ffmpeg)

Question

snip = 'ffmpeg -i %s -ss %d:%d:%d -t %d:%d:%d -async 1 -strict -2 %s';
snipstr = sprintf(snip,UncutFile,StartHRS,StartMIN,StartSEC,DurHRS,DurMIN,DurSEC,CutFile);
runsnip = system(snipstr);

这些行根据开始时间输入和持续时间输入来剪辑视频。我需要将我的视频剪辑到比一秒更准确的时间。
谢谢你。

Answer 1

time duration 的文档说:

There are two accepted syntaxes for expressing time duration.

[-][HH:]MM:SS[.m...]

HH expresses the number of hours, MM the number of minutes for amaximum of 2 digits, and SS the number of seconds for a maximum of 2digits. The m at the end expresses decimal value for SS.

or

[-]S+[.m...][s|ms|us]

S expresses the number of seconds, with the optional decimal part m.The optional literal suffixes s, ms or us indicate to interpretthe value as seconds, milliseconds or microseconds, respectively.

In both expressions, the optional - indicates negative duration.

示例: -ss 01:23:45.4或 -ss 5025.4