stash/pkg/ffmpeg/image.go

35 lines
748 B
Go

package ffmpeg
import (
"bytes"
"fmt"
)
func (e *Encoder) ImageThumbnail(image *bytes.Buffer, format string, maxDimensions int, path string) ([]byte, error) {
// ffmpeg spends a long sniffing image format when data is piped through stdio, so we pass the format explicitly instead
var ffmpegformat string
switch format {
case "jpeg":
ffmpegformat = "mjpeg"
case "png":
ffmpegformat = "png_pipe"
case "webp":
ffmpegformat = "webp_pipe"
}
args := []string{
"-f", ffmpegformat,
"-i", "-",
"-vf", fmt.Sprintf("scale=%v:%v:force_original_aspect_ratio=decrease", maxDimensions, maxDimensions),
"-c:v", "mjpeg",
"-q:v", "5",
"-f", "image2pipe",
"-",
}
data, err := e.run(path, args, image)
return []byte(data), err
}