diff --git a/internal/app/session/session.go b/internal/app/session/session.go
index bcaa1d4..b800531 100644
--- a/internal/app/session/session.go
+++ b/internal/app/session/session.go
@@ -49,6 +49,10 @@ var (
 	ErrVideoBitrateRequired = errors.New("video bitrate required for videochannel (use -video-bitrate)")
 	ErrVideoHWRequired      = errors.New("video hardware acceleration required for videochannel (use -video-hw none/nvenc)")
 
+	// VP8channel errors
+	ErrVP8FPSRequired       = errors.New("vp8 fps required for vp8channel (use -vp8-fps)")
+	ErrVP8BatchSizeRequired = errors.New("vp8 batch size required for vp8channel (use -vp8-batch)")
+
 	// CNC errors
 	ErrSOCKSHostRequired = errors.New("socks host required for cnc mode (use -socks-host)")
 	ErrSOCKSPortRequired = errors.New("socks port required for cnc mode (use -socks-port)")
@@ -174,6 +178,15 @@ func Validate(cfg Config) error {
 		}
 	}
 
+	if cfg.Transport == "vp8channel" {
+		if cfg.VP8FPS == 0 {
+			return ErrVP8FPSRequired
+		}
+		if cfg.VP8BatchSize == 0 {
+			return ErrVP8BatchSizeRequired
+		}
+	}
+
 	if cfg.Mode == "cnc" {
 		if cfg.SOCKSHost == "" {
 			return ErrSOCKSHostRequired
diff --git a/internal/transport/vp8channel/transport.go b/internal/transport/vp8channel/transport.go
index afb6f3c..6c716f7 100644
--- a/internal/transport/vp8channel/transport.go
+++ b/internal/transport/vp8channel/transport.go
@@ -19,8 +19,6 @@ import (
 
 const (
 	defaultMaxPayloadSize = 60 * 1024
-	defaultFPS            = 25
-	defaultBatchSize      = 1
 	defaultConnectTimeout = 30 * time.Second
 	dataMarker            = 0xFF
 	rtpBufSize            = 65536
@@ -87,13 +85,7 @@ func New(ctx context.Context, cfg transport.Config) (transport.Transport, error)
 	}
 
 	fps := cfg.VP8FPS
-	if fps <= 0 {
-		fps = defaultFPS
-	}
 	batchSize := cfg.VP8BatchSize
-	if batchSize <= 0 {
-		batchSize = defaultBatchSize
-	}
 
 	tr := &streamTransport{
 		stream:        stream,