Add 2.0 Mbps preset and default to 2.5 Mbps

DONE.md

@@ -822,6 +822,7 @@ This file tracks completed features, fixes, and milestones.
 - ✅ Reset now forces resolution and frame rate back to Source
 - ✅ Fixed reset handler scope for convert tabs
 - ✅ Restored 25%/33%/50%/75% target size reduction presets
+- ✅ Default bitrate preset set to 2.5 Mbps and added 2.0 Mbps option
 - ✅ Stabilized video seeking and embedded rendering
 - ✅ Improved player window positioning
 - ✅ Fixed clear video functionality

TODO.md

@@ -55,6 +55,7 @@ This file tracks upcoming features, improvements, and known issues.
   - Reset forces resolution/frame rate back to Source
   - Reset handler scope fixed for convert tabs
   - Target size reduction presets restored (25/33/50/75%)
+  - Default bitrate preset set to 2.5 Mbps with added 2.0 Mbps option
 
 *Last Updated: 2025-12-20*
 

main.go

@@ -518,7 +518,7 @@ func defaultConvertConfig() convertConfig {
 		EncoderPreset:          "medium",
 		CRF:                    "",
 		BitrateMode:            "CRF",
-		BitratePreset:          "Manual",
+		BitratePreset:          "2.5 Mbps - Medium Quality",
 		VideoBitrate:           "5000k",
 		TargetFileSize:         "",
 		TargetResolution:       "Source",
@@ -6012,6 +6012,7 @@ 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: ""},