fix: udta write

plugin/mp4/pkg/box/udta.go

@@ -50,15 +50,7 @@ func CreateStreamPathBox(streamPath string) *StreamPathBox {
 
 // WriteTo writes the UserDataBox to the given writer
 func (box *UserDataBox) WriteTo(w io.Writer) (n int64, err error) {
-	for _, entry := range box.Entries {
-		var nn int64
-		nn, err = entry.WriteTo(w)
-		n += nn
-		if err != nil {
-			return
-		}
-	}
-	return
+	return WriteTo(w, box.Entries...)
 }
 
 // Unmarshal parses the given buffer into a UserDataBox

publisher.go

@@ -360,7 +360,7 @@ func (p *Publisher) WriteVideo(data IAVFrame) (err error) {
 	var idr *util.Ring[AVFrame]
 	if t.IDRingList.Len() > 0 {
 		idr = t.IDRingList.Back().Value
-		if t.CheckIfNeedDropFrame(p.MaxFPS) {
+		if p.Speed != 1 && t.CheckIfNeedDropFrame(p.MaxFPS) {
 			p.dropAfterTs = t.LastTs
 			return ErrSkip
 		} else {