icza / mjpeg

MJPEG video writer implementation in Go.

mjpeg

MJPEG video writer implementation in Go.

Examples

Let's see an example how to turn the JPEG files 1.jpg, 2.jpg, ..., 10.jpg into a movie file:

checkErr := func(err error) {
    if err != nil {
        panic(err)
    }
}

// Video size: 200x100 pixels, FPS: 2
aw, err := mjpeg.New("test.avi", 200, 100, 2)
checkErr(err)

// Create a movie from images: 1.jpg, 2.jpg, ..., 10.jpg
for i := 1; i <= 10; i++ {
    data, err := ioutil.ReadFile(fmt.Sprintf("%d.jpg", i))
    checkErr(err)
    checkErr(aw.AddFrame(data))
}

checkErr(aw.Close())

Example to add an image.Image as a frame to the video:

aw, err := mjpeg.New("test.avi", 200, 100, 2)
checkErr(err)

var img image.Image
// Acquire / initialize image, e.g.:
// img = image.NewRGBA(image.Rect(0, 0, 200, 100))

buf := &bytes.Buffer{}
checkErr(jpeg.Encode(buf, img, nil))
checkErr(aw.AddFrame(buf.Bytes()))

checkErr(aw.Close())