Improve play audio on RTSP backchannel

internal/ffmpeg/README.md

@@ -45,6 +45,13 @@
 [video4linux2,v4l2 @ 0x7f7de7c58bc0] Compressed:       mjpeg :          Motion-JPEG : 640x480 160x120 176x144 320x176 320x240 352x288 432x240 544x288 640x360 752x416 800x448 800x600 864x480 960x544 960x720 1024x576 1184x656 1280x720 1280x960
 ```
 
+## TTS
+
+```yaml
+streams:
+  tts: ffmpeg:#input=-re -f lavfi -i "flite=text='1 2 3 4 5 6 7 8 9 0'"#audio=pcma
+```
+
 ## Useful links
 
 - https://superuser.com/questions/564402/explanation-of-x264-tune

internal/streams/play.go

@@ -2,6 +2,8 @@ package streams
 
 import (
 	"errors"
+	"time"
+
 	"github.com/AlexxIT/go2rtc/pkg/core"
 )
 
@@ -80,18 +82,20 @@ func (s *Stream) Play(source string) error {
 		s.AddInternalProducer(src)
 		s.AddInternalConsumer(cons)
 
-		go func() {
-			_ = src.Start()
-			_ = dst.Stop()
-			s.RemoveProducer(src)
-		}()
-
 		go func() {
 			_ = dst.Start()
 			_ = src.Stop()
 			s.RemoveInternalConsumer(cons)
 		}()
 
+		go func() {
+			_ = src.Start()
+			// little timeout before stop dst, so the buffer can be transferred
+			time.Sleep(time.Second)
+			_ = dst.Stop()
+			s.RemoveProducer(src)
+		}()
+
 		return nil
 	}