Add DVD authoring placeholder and adjust snippet defaults

DONE.md

@@ -833,6 +833,7 @@ This file tracks completed features, fixes, and milestones.
 - ✅ Hide quality presets when bitrate mode is not CRF
 - ✅ Snippet UI now shows Convert Snippet + batch + options with context-sensitive controls
 - ✅ Reduced module video pane minimum sizes to allow GNOME window snapping
+- ✅ Snippet defaults now use conversion settings (not Match Source)
 - ✅ Stabilized video seeking and embedded rendering
 - ✅ Improved player window positioning
 - ✅ Fixed clear video functionality

TODO.md

@@ -109,6 +109,13 @@ This file tracks upcoming features, improvements, and known issues.
   - Creative effects (grayscale, vignette)
   - Real-time preview system
 
+- [ ] **DVD Authoring module**
+  - Output VIDEO_TS folder + burn-ready ISO
+  - Auto-detect NTSC/PAL with manual override
+  - Preserve all audio tracks
+  - Subtitle support (start with SRT)
+  - Chapter sources: existing, manual markers, auto scene length
+
 ### Quality & Compression Improvements
 - [x] **Automatic black bar detection and cropping** (v0.1.0-dev13 - COMPLETED)
   - Implement ffmpeg cropdetect analysis pass

internal/modules/handlers.go

@@ -44,6 +44,12 @@ func HandleAudio(files []string) {
 	fmt.Println("audio", files)
 }
 
+// HandleDVDAuthor handles the DVD authoring module (placeholder)
+func HandleDVDAuthor(files []string) {
+	logging.Debug(logging.CatModule, "dvd author handler invoked with %v", files)
+	fmt.Println("dvd author", files)
+}
+
 // HandleSubtitles handles the subtitles module (placeholder)
 func HandleSubtitles(files []string) {
 	logging.Debug(logging.CatModule, "subtitles handler invoked with %v", files)

main.go

@@ -88,6 +88,7 @@ var (
 		{"filters", "Filters", utils.MustHex("#44FF88"), "Convert", modules.HandleFilters},       // Green
 		{"upscale", "Upscale", utils.MustHex("#AAFF44"), "Advanced", modules.HandleUpscale},      // Yellow-Green
 		{"audio", "Audio", utils.MustHex("#FFD744"), "Convert", modules.HandleAudio},             // Yellow
+		{"dvd-author", "DVD Author", utils.MustHex("#FFAA44"), "Convert", modules.HandleDVDAuthor}, // Orange
 		{"subtitles", "Subtitles", utils.MustHex("#44A6FF"), "Convert", modules.HandleSubtitles}, // Azure
 		{"thumb", "Thumb", utils.MustHex("#FF8844"), "Screenshots", modules.HandleThumb},         // Orange
 		{"compare", "Compare", utils.MustHex("#FF44AA"), "Inspect", modules.HandleCompare},       // Pink
@@ -1410,7 +1411,7 @@ func (s *appState) showMainMenu() {
 			Label:    m.Label,
 			Color:    m.Color,
 			Category: m.Category,
-			Enabled:  m.ID == "convert" || m.ID == "compare" || m.ID == "inspect" || m.ID == "merge" || m.ID == "thumb" || m.ID == "player" || m.ID == "filters" || m.ID == "upscale", // Enabled modules (subtitles placeholder stays disabled)
+		Enabled:  m.ID == "convert" || m.ID == "compare" || m.ID == "inspect" || m.ID == "merge" || m.ID == "thumb" || m.ID == "player" || m.ID == "filters" || m.ID == "upscale", // Enabled modules (authoring/subtitles placeholders stay disabled)
 		})
 	}
 
@@ -7064,10 +7065,6 @@ func buildConvertView(state *appState, src *videoSource) fyne.CanvasObject {
 	if state.snippetLength == 0 {
 		state.snippetLength = 20 // Default to 20 seconds
 	}
-	// Default to source format if not set
-	if !state.snippetSourceFormat {
-		state.snippetSourceFormat = true
-	}
 
 	// Snippet length configuration
 	snippetLengthLabel := widget.NewLabel(fmt.Sprintf("Snippet Length: %d seconds", state.snippetLength))