cmd: Update transcoding example to use new API.

cmd/transcoding/transcoding.go

@@ -67,7 +67,7 @@ func main() {
 	ffmpeg.InitFFmpeg()
 
 	fmt.Printf("Setting fname %s encoding %d renditions with %v\n", fname, len(options), lbl)
-	err := ffmpeg.Transcode2(&ffmpeg.TranscodeOptionsIn{
+	res, err := ffmpeg.Transcode3(&ffmpeg.TranscodeOptionsIn{
 		Fname:  fname,
 		Accel:  accel,
 		Device: dev,
@@ -75,4 +75,7 @@ func main() {
 	if err != nil {
 		panic(err)
 	}
+	for i, r := range res {
+		fmt.Printf("profile=%v frames=%v pixels=%v\n", profiles[i].Name, r.Frames, r.Pixels)
+	}
 }