Run unified player in preview-only mode

internal/player/unified_ffmpeg_player.go

@@ -97,6 +97,12 @@ func NewUnifiedPlayer(config Config) *UnifiedPlayer {
 		},
 		audioBufferSize: 32768, // 170ms at 48kHz for smooth playback
 	}
+	if config.WindowWidth > 0 {
+		player.windowW = config.WindowWidth
+	}
+	if config.WindowHeight > 0 {
+		player.windowH = config.WindowHeight
+	}
 
 	ctx, cancel := context.WithCancel(context.Background())
 	player.ctx = ctx
@@ -155,6 +161,7 @@ func (p *UnifiedPlayer) Load(path string, offset time.Duration) error {
 		}
 	}
 
+	if !p.previewMode {
 		// Initialize audio context for playback
 		sampleRate := 48000
 		channels := 2
@@ -175,6 +182,7 @@ func (p *UnifiedPlayer) Load(path string, offset time.Duration) error {
 
 		p.audioContext = ctx
 		logging.Info(logging.CatPlayer, "Audio context initialized successfully")
+	}
 
 	// Start FFmpeg process for unified A/V output
 	err = p.startVideoProcess()
@@ -183,7 +191,9 @@ func (p *UnifiedPlayer) Load(path string, offset time.Duration) error {
 	}
 
 	// Start audio stream processing
+	if !p.previewMode {
 		go p.readAudioStream()
+	}
 
 	return nil
 }
@@ -545,6 +555,18 @@ func (p *UnifiedPlayer) startVideoProcess() error {
 		"-hide_banner", "-loglevel", "error",
 		"-ss", fmt.Sprintf("%.3f", p.currentTime.Seconds()),
 		"-i", p.currentPath,
+	}
+	if p.previewMode {
+		args = append(args,
+			"-map", "0:v:0",
+			"-an",
+			"-f", "rawvideo",
+			"-pix_fmt", "rgb24",
+			"-r", "24",
+			"pipe:1",
+		)
+	} else {
+		args = append(args,
 			// Video stream to pipe 4
 			"-map", "0:v:0",
 			"-f", "rawvideo",
@@ -557,6 +579,7 @@ func (p *UnifiedPlayer) startVideoProcess() error {
 			"-ar", "48000",
 			"-f", "s16le",
 			"pipe:5",
+		)
 	}
 
 	// Add hardware acceleration if available