douchensou6969 2019-08-30 07:06
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如何将持续时间分成两半

I'm trying to find the midpoint of a video, in other words divide the total length by 2. ffmpeg gives time in format HOURS:MM:SS.MICROSECONDS, so ignoring microseconds, how could I get the half way point? I've tried dividing each number (hours/minutes/seconds) by 2 but this fails in the case of 0:01:00, for example.

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  • dongyongan9941 2019-08-30 07:54
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    This can be much simpler (and maybe even faster) if we use the parsing and formatting logic provided by the time package.

    func getDividedTime(times string, n int) (string, error) {
        t, err := time.Parse("15:04:05.000000", times)
        if err != nil {
            return "", err
        }
        d := t.Sub(time.Time{}) / time.Duration(n)
        return time.Time{}.Add(d).Format("15:04:05"), nil
    }
    

    Try it on the Go Playground. The weakness of this solution is that it "rejects" inputs having hours > 23.

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