[gocv][golang-opencv]示例教程(1-13)在多个视频文件中跳转

package main

import (
 "gocv.io/x/gocv"
 "log"
)

func main() {
 capture, err := gocv.VideoCaptureFile("../../data/drop.avi")
 if err != nil {
  log.Panic("Can not find video")
  return
 }
 defer capture.Close()

 frameCount := capture.Get(gocv.VideoCaptureFrameCount)
 log.Println("Frame Count:", frameCount)

 log.Println("Position:", int(capture.Get(gocv.VideoCapturePosFrames)))

 window1 := gocv.NewWindow("Window1")
 defer window1.Close()

 window2 := gocv.NewWindow("Window2")
 defer window2.Close()

 window3 := gocv.NewWindow("Window3")
 defer window3.Close()

 mat := gocv.NewMat()

 // window1
 log.Println("Position:", capture.Get(gocv.VideoCapturePosFrames))
 ok := capture.Read(&mat)
 if !ok {
  log.Fatal("Can not read frame")
  return
 }

 window1.IMShow(mat)

 // window2
 log.Println("Position:", capture.Get(gocv.VideoCapturePosFrames))
 ok = capture.Read(&mat)
 if !ok {
  log.Fatal("Can not read frame")
  return
 }

 window2.IMShow(mat)

 // window3
 capture.Set(gocv.VideoCapturePosFrames, 100)
 log.Println("Position:", capture.Get(gocv.VideoCapturePosFrames))
 ok = capture.Read(&mat)
 if !ok {
  log.Fatal("Can not read frame")
  return
 }

 window3.IMShow(mat)

 for {
  key := gocv.WaitKey(3)
  if key == 27 {
   log.Println("Pressed ESC")
   break
  }
 }
}

Execute Result