forked from deluan/vnc2video
/
x264-enc.go
119 lines (106 loc) · 2.64 KB
/
x264-enc.go
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package encoders
import (
"errors"
"image"
"io"
"os"
"os/exec"
"strconv"
"strings"
"github.com/amitbet/vnc2video/logger"
)
type X264ImageEncoder struct {
FFMpegBinPath string
cmd *exec.Cmd
input io.WriteCloser
closed bool
Framerate int
}
func (enc *X264ImageEncoder) Init(videoFileName string) {
fileExt := ".mp4"
if enc.Framerate == 0 {
enc.Framerate = 12
}
if !strings.HasSuffix(videoFileName, fileExt) {
videoFileName = videoFileName + fileExt
}
//binary := "./ffmpeg"
cmd := exec.Command(enc.FFMpegBinPath,
"-f", "image2pipe",
"-vcodec", "ppm",
//"-r", strconv.Itoa(framerate),
"-r", strconv.Itoa(enc.Framerate),
//"-re",
//"-i", "pipe:0",
"-an", //no audio
//"-vsync", "2",
///"-probesize", "10000000",
"-y",
"-i", "-",
//"–s", "640×360",
"-vcodec", "libx264", //"libvpx",//"libvpx-vp9"//"libx264"
//"-b:v", "0.33M",
"-threads", "8",
///"-coder", "1",
///"-bf", "0",
///"-me_method", "hex",
//"-speed", "0",
//"-lossless", "1", //for vpx
// "-an", "-f", "webm",
"-preset", "veryfast",
//"-tune", "animation",
// "-maxrate", "0.5M",
// "-bufsize", "50M",
"-g", "250",
//"-crf", "0", //for lossless encoding!!!!
//"-rc_lookahead", "16",
//"-profile", "0",
"-crf", "37",
//"-qmax", "51",
//"-qmin", "7",
//"-slices", "4",
//"-vb", "2M",
videoFileName,
)
//cmd := exec.Command("/bin/echo")
//io.Copy(cmd.Stdout, os.Stdout)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
encInput, err := cmd.StdinPipe()
enc.input = encInput
if err != nil {
logger.Error("can't get ffmpeg input pipe")
}
enc.cmd = cmd
}
func (enc *X264ImageEncoder) Run(videoFileName string) error {
if _, err := os.Stat(enc.FFMpegBinPath); os.IsNotExist(err) {
if _, err := os.Stat(enc.FFMpegBinPath + ".exe"); os.IsNotExist(err) {
logger.Error("encoder file doesn't exist in path:", enc.FFMpegBinPath)
return errors.New("encoder file doesn't exist in path" + videoFileName)
} else {
enc.FFMpegBinPath = enc.FFMpegBinPath + ".exe"
}
}
enc.Init(videoFileName)
logger.Debugf("launching binary: %v", enc.cmd)
err := enc.cmd.Run()
if err != nil {
logger.Errorf("error while launching ffmpeg: %v\n err: %v", enc.cmd.Args, err)
return err
}
return nil
}
func (enc *X264ImageEncoder) Encode(img image.Image) {
if enc.input == nil || enc.closed {
return
}
err := encodePPM(enc.input, img)
if err != nil {
logger.Error("error while encoding image:", err)
}
}
func (enc *X264ImageEncoder) Close() {
enc.closed = true
//enc.cmd.Process.Kill()
}