package main import ( "github.com/nareix/mp4" "os" "fmt" ) func DemuxExample() { file, _ := os.Open("test.mp4") demuxer := &mp4.Demuxer{ R: file, } demuxer.ReadHeader() fmt.Println("Duration: ", demuxer.TrackH264.Duration()) count := demuxer.TrackH264.SampleCount() fmt.Println("SampleCount: ", count) } func main() { DemuxExample() }