27 lines
670 B
Go
27 lines
670 B
Go
package ffmpeg
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import "time"
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// PreviewTimeOffset returns an appropriate time offset depending on the duration for extracting a preview image.
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func PreviewTimeOffset(d time.Duration) string {
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// Default.
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result := "00:00:00.001"
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// If the video is long enough, don't use the first frames to avoid completely
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// black or white thumbnails in case there is an effect or intro.
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switch {
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case d > time.Hour:
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result = "00:02:30.000"
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case d > 10*time.Minute:
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result = "00:01:00.000"
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case d > 3*time.Minute:
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result = "00:00:30.000"
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case d > time.Minute:
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result = "00:00:09.000"
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case d > time.Millisecond*3100:
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result = "00:00:03.000"
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}
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return result
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}
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