Expand and rename bitrate presets

DONE.md

@@ -827,6 +827,7 @@ This file tracks completed features, fixes, and milestones.
 - ✅ Bitrate mode now strictly hides unrelated controls (CRF only in CRF mode)
 - ✅ Removed CRF visibility toggle from quality updates to prevent CBR/VBR bleed-through
 - ✅ Added CRF preset dropdown with Manual option
+- ✅ Added 0.5/1.0 Mbps bitrate presets and simplified preset names
 - ✅ Stabilized video seeking and embedded rendering
 - ✅ Improved player window positioning
 - ✅ Fixed clear video functionality

TODO.md

@@ -60,6 +60,7 @@ This file tracks upcoming features, improvements, and known issues.
   - Bitrate mode hides unrelated controls (CRF only in CRF mode)
   - CRF visibility no longer overridden by quality updates
   - CRF preset dropdown added with Manual option
+  - Bitrate presets expanded to include 0.5/1.0 Mbps and renamed for clarity
 
 *Last Updated: 2025-12-20*
 

main.go

@@ -6073,12 +6073,14 @@ func buildConvertView(state *appState, src *videoSource) fyne.CanvasObject {
 	}
 
 	presets := []bitratePreset{
-		{Label: "1.5 Mbps - Low Quality", Bitrate: "1500k", Codec: ""},
-		{Label: "2.0 Mbps - Medium-Low Quality", Bitrate: "2000k", Codec: ""},
-		{Label: "2.5 Mbps - Medium Quality", Bitrate: "2500k", Codec: ""},
-		{Label: "4.0 Mbps - Good Quality", Bitrate: "4000k", Codec: ""},
-		{Label: "6.0 Mbps - High Quality", Bitrate: "6000k", Codec: ""},
-		{Label: "8.0 Mbps - Very High Quality", Bitrate: "8000k", Codec: ""},
+		{Label: "0.5 Mbps - Ultra Low", Bitrate: "500k", Codec: ""},
+		{Label: "1.0 Mbps - Very Low", Bitrate: "1000k", Codec: ""},
+		{Label: "1.5 Mbps - Low", Bitrate: "1500k", Codec: ""},
+		{Label: "2.0 Mbps - Medium-Low", Bitrate: "2000k", Codec: ""},
+		{Label: "2.5 Mbps - Medium", Bitrate: "2500k", Codec: ""},
+		{Label: "4.0 Mbps - Good", Bitrate: "4000k", Codec: ""},
+		{Label: "6.0 Mbps - High", Bitrate: "6000k", Codec: ""},
+		{Label: "8.0 Mbps - Very High", Bitrate: "8000k", Codec: ""},
 		{Label: "Manual", Bitrate: "", Codec: ""},
 	}