/
video.go
162 lines (135 loc) · 4.28 KB
/
video.go
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package goincv
import (
"errors"
"fmt"
"image"
"image/draw"
"io/ioutil"
"log"
"math/rand"
"os"
"os/exec"
"path/filepath"
"time"
"github.com/anthonynsimon/bild/effect"
"github.com/anthonynsimon/bild/segment"
)
var FFmpegPath = "ffmpeg"
func FFmpegCap(videoPath string, picFormat string, r int, temp string, extArgs []string) ([]string, error) {
args := []string{"-i", videoPath, "-r", fmt.Sprint(r), "-f", "image2"}
args = append(args, extArgs...)
args = append(args, filepath.Join(temp, "%05d."+picFormat))
log.Println("args:", args)
_, err := exec.Command(FFmpegPath, args...).CombinedOutput()
if err != nil {
return nil, err
}
absTemp, _ := filepath.Abs(temp)
fs, err := os.ReadDir(absTemp)
if err != nil {
return nil, err
}
ret := []string{}
for i := range fs {
ret = append(ret, filepath.Join(absTemp, fs[i].Name()))
}
return ret, nil
}
func FFmpegWav(videoPath string, wav string) error {
_, err := exec.Command(FFmpegPath, "-i", videoPath, "-f", "wav", wav).CombinedOutput()
if err != nil {
return err
}
return nil
}
func FFmpegSynthesis(outVideoPath string, picFormat string, r int, temp string, wavFile string) error {
return WriteFileWithURICallback(outVideoPath, func(tmpFile string) error {
args := []string{"-r", fmt.Sprint(r), "-i", filepath.Join(temp, "%05d."+picFormat), "-i", wavFile, "-c:a", "aac", "-strict", "experimental", "-vcodec", "libx264", "-pix_fmt", "yuv420p", "-y", tmpFile}
if wavFile == "" {
args = []string{"-r", fmt.Sprint(r), "-i", filepath.Join(temp, "%05d."+picFormat), "-vcodec", "libx264", "-pix_fmt", "yuv420p", "-y", tmpFile}
}
log.Println("FFmpegSynthesis:", args)
data, err := exec.Command(FFmpegPath, args...).CombinedOutput()
if err != nil {
return errors.New(string(data))
}
return nil
})
}
func FFmpegWorking(inVideoPath string, outVideoPath string, picFormat string, r int, temp string, ext []string, do func(imgPath string) error) error {
log.Println("解码视频中...")
data, err := FFmpegCap(inVideoPath, picFormat, r, temp, ext)
if err != nil {
return err
}
tmpWavFile := filepath.Join(os.TempDir(), "tmp.wav")
FFmpegWav(inVideoPath, tmpWavFile)
defer os.RemoveAll(tmpWavFile)
log.Println("解码完成...")
for i := range data {
err := do(data[i])
if err != nil {
return err
}
}
return FFmpegSynthesis(outVideoPath, picFormat, r, temp, tmpWavFile)
}
func FFmpegCapOnec(videoPath string, s int) (string, error) {
tmp := filepath.Join(os.TempDir(), fmt.Sprint(time.Now().Format("20060102150405"), "_", time.Now().UnixNano(), "_", rand.Intn(999999), ".jpg"))
args := []string{"-i", videoPath, "-y", "-ss", fmt.Sprint(s), tmp}
data, _ := exec.Command(FFmpegPath, args...).CombinedOutput()
picRaw, _ := ioutil.ReadFile(tmp)
if len(picRaw) == 0 {
log.Println("FFmpegCapOnec :", string(data))
return "", fmt.Errorf("图片未生成")
}
return tmp, nil
}
func FFmpegMultiImageFusion(videoPath string, width, height, r int, temp string) (image.Image, error) {
data, err := FFmpegCap(videoPath, "png", r, temp, []string{
"-vf", fmt.Sprintf("scale=%d:%d", width, height),
})
if err != nil {
return nil, err
}
imgs := []image.Image{}
for i := range data {
item := File2Image(data[i])
imgs = append(imgs, item)
}
img := MultiImageFusion(imgs, 1)
img = effect.Sobel(img)
img = segment.Threshold(img, 128)
return img, nil
}
func FFmpegMultiImageFusion4s(videoPath string, width, height int, temp string) (ret []image.Image, err error) {
r := 8
secInterval := 1
data, err := FFmpegCap(videoPath, "png", r, temp, []string{
"-vf", fmt.Sprintf("scale=%d:%d", width, height),
})
if err != nil {
return nil, err
}
imgs := []image.Image{}
for i := range data {
item := File2Image(data[i])
imgs = append(imgs, item)
if len(imgs) >= r*2 {
img := MultiImageFusion(imgs, 1)
img = effect.Sobel(img)
img = segment.Threshold(img, 128)
canvas := ToRGBA(imgs[0])
draw.DrawMask(canvas, canvas.Bounds(), img, image.ZP, BWMask2AMask(img), image.ZP, draw.Over)
ret = append(ret, canvas)
imgs = imgs[r*secInterval:]
}
}
img := MultiImageFusion(imgs, 1)
img = effect.Sobel(img)
img = segment.Threshold(img, 128)
canvas := ToRGBA(imgs[0])
draw.DrawMask(canvas, canvas.Bounds(), img, image.ZP, BWMask2AMask(img), image.ZP, draw.Over)
ret = append(ret, canvas)
return ret, nil
}