diff --git a/cmd/mxl-pattern/main.go b/cmd/mxl-pattern/main.go
index 04c7148..d48da7d 100644
--- a/cmd/mxl-pattern/main.go
+++ b/cmd/mxl-pattern/main.go
@@ -160,8 +160,7 @@ func checkArgs(args appArgs) {
 
 	if !audioFlowDefProvided {
 		if args.audioChannels == 0 {
-			fmt.Fprintln(os.Stderr, "Audio channels amount must be > 0")
-			printUsageAndExit()
+			// TODO: ignore audio
 		}
 		if _, exists := samplingRates[args.audioSamplingFreq]; !exists {
 			fmt.Fprintf(os.Stderr, "Sample rate %s is not in available list.\n", args.audioSamplingFreq)
@@ -201,7 +200,7 @@ var patterns = map[string]pattern{
 		name:        "ebu75-move",
 		description: "EBU 75% Color Bar Signal with moving square",
 		kernelPath:  "kernels/dynamic/ebu75.wgsl",
-		motion:      false,
+		motion:      true,
 	},
 	"ebu100": {
 		name:        "ebu100",
@@ -213,7 +212,7 @@ var patterns = map[string]pattern{
 		name:        "ebu100-move",
 		description: "EBU 100% Color Bar Signal with moving square",
 		kernelPath:  "kernels/dynamic/ebu100.wgsl",
-		motion:      false,
+		motion:      true,
 	},
 	"smpte": {
 		name:        "smpte",
@@ -225,7 +224,7 @@ var patterns = map[string]pattern{
 		name:        "smpte-move",
 		description: "SMPTE RP-219 Color Bar Signal with moving square",
 		kernelPath:  "kernels/dynamic/smpteBars.wgsl",
-		motion:      false,
+		motion:      true,
 	},
 	"gray-bars": {
 		name:        "gray-bars",
@@ -237,7 +236,7 @@ var patterns = map[string]pattern{
 		name:        "gray-bars-move",
 		description: "13-step grayscale bars (Y 64..940) with moving square",
 		kernelPath:  "kernels/dynamic/yBars.wgsl",
-		motion:      false,
+		motion:      true,
 	},
 	"gray-ramp": {
 		name:        "gray-ramp",
@@ -249,7 +248,7 @@ var patterns = map[string]pattern{
 		name:        "gray-ramp-move",
 		description: "Y gradient with moving square",
 		kernelPath:  "kernels/dynamic/yRamp.wgsl",
-		motion:      false,
+		motion:      true,
 	},
 }
 
@@ -299,12 +298,12 @@ func flagSetAddFlags(fs *pflag.FlagSet, args *appArgs) {
 			"br - bottom-right corner",
 	)
 
-	fs.UintVar(&args.videoWidth, "width", 1920, "Video pattern width")
+	fs.UintVar(&args.videoWidth, "width", 1920, "Video pattern width. Zero = no video [TODO]")
 	fs.UintVar(&args.videoHeight, "height", 1080, "Video pattern height")
 	fs.StringVar(&args.videoFPS, "fps", "25", "Video pattern FPS")
 	fs.StringVar(&args.videoUUID, "video-id", "", "Video UUID. Will be created, if not provided")
 	// Audio pattern flags
-	fs.Uint8VarP(&args.audioChannels, "channel", "c", 2, "Amount of audio channels. Each channel: num * 1kHz [TODO]")
+	fs.Uint8VarP(&args.audioChannels, "channel", "c", 0, "Amount of audio channels. Each channel: num * 1kHz. Zero = no sound")
 	fs.StringVarP(&args.audioSamplingFreq, "freq", "f", "48", "Sampling frequency of test audio feed in kHz [TODO]")
 	fs.StringVar(&args.audioUUID, "audio-id", "", "Audio UUID. Will be created, if not provided [TODO]")
 }
diff --git a/internal/generator/text_test.go b/internal/generator/text_test.go
index 5a12ba3..e7224e0 100644
--- a/internal/generator/text_test.go
+++ b/internal/generator/text_test.go
@@ -22,7 +22,7 @@ func testFace(t *testing.T, size float64) font.Face {
 func TestNewTextOverlay(t *testing.T) {
 	const frameW, frameH = 1920, 1080
 
-	o, err := NewTextOverlay("AB", frameW, frameH, testFace(t, 48))
+	o, err := NewTextOverlay("AB", frameW, frameH, 0, 0, "", testFace(t, 48))
 	if err != nil {
 		t.Fatalf("NewTextOverlay: %v", err)
 	}
@@ -69,7 +69,7 @@ func TestNewTextOverlay(t *testing.T) {
 		{"AB", false},
 		{"Ag", true},
 	} {
-		o, err := NewTextOverlay(tc.text, frameW, frameH, testFace(t, 48))
+		o, err := NewTextOverlay(tc.text, frameW, frameH, 0, 0, "", testFace(t, 48))
 		if err != nil {
 			t.Fatalf("NewTextOverlay(%q): %v", tc.text, err)
 		}
@@ -89,7 +89,7 @@ func TestNewTextOverlay(t *testing.T) {
 
 func TestTextOverlayApplyV210(t *testing.T) {
 	const frameW, frameH = 1920, 1080
-	o, err := NewTextOverlay("MXL", frameW, frameH, testFace(t, 48))
+	o, err := NewTextOverlay("MXL", frameW, frameH, 0, 0, "", testFace(t, 48))
 	if err != nil {
 		t.Fatalf("NewTextOverlay: %v", err)
 	}