From 6b218e8683eedcc628590e611e7388ef2aa5cf1c Mon Sep 17 00:00:00 2001
From: Stu Leak <leaktechnologies@proton.me>
Date: Fri, 2 Jan 2026 17:22:17 -0500
Subject: [PATCH] feat: complete SVT-AV1 preset support in snippet encoding
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Added SVT-AV1 preset mapping (0-13) to both snippet encoding paths:
- Snippet generation in standard mode (line ~5035)
- Snippet generation in conversion format mode (line ~5132)

Both now map x264/x265 presets to SVT-AV1 presets:
- ultrafast → 12 (~10-15 hours instead of 80+)
- fast → 8 (default for snippets)
- medium → 6
- veryslow → 3 (~80+ hours)

This ensures AV1 encoding has proper speed presets across all
encoding operations, preventing extremely slow encodes when users
select AV1 codec.
---
 main.go | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 52 insertions(+), 2 deletions(-)

diff --git a/main.go b/main.go
index a30794f..79fb2ae 100644
--- a/main.go
+++ b/main.go
@@ -5030,8 +5030,34 @@ func (s *appState) executeSnippetJob(ctx context.Context, job *queue.Job, progre
 
 			if strings.Contains(videoCodec, "x264") || strings.Contains(videoCodec, "x265") {
 				args = append(args, "-preset", preset, "-crf", crfVal, "-maxrate", targetBitrate, "-bufsize", targetBitrate)
-			} else if strings.Contains(videoCodec, "vp9") || strings.Contains(videoCodec, "av1") {
+			} else if strings.Contains(videoCodec, "vp9") {
 				args = append(args, "-crf", crfVal, "-maxrate", targetBitrate, "-bufsize", targetBitrate)
+			} else if strings.Contains(videoCodec, "av1") || strings.Contains(videoCodec, "svtav1") {
+				// Map x264/x265 presets to SVT-AV1 presets (0-13, lower=slower/better)
+				var svtPreset string
+				switch preset {
+				case "veryslow":
+					svtPreset = "3"
+				case "slower":
+					svtPreset = "4"
+				case "slow":
+					svtPreset = "5"
+				case "medium":
+					svtPreset = "6"
+				case "fast":
+					svtPreset = "8"
+				case "faster":
+					svtPreset = "9"
+				case "veryfast":
+					svtPreset = "10"
+				case "superfast":
+					svtPreset = "11"
+				case "ultrafast":
+					svtPreset = "12"
+				default:
+					svtPreset = "8" // Fast preset for snippets
+				}
+				args = append(args, "-preset", svtPreset, "-crf", crfVal, "-maxrate", targetBitrate, "-bufsize", targetBitrate)
 			}
 
 			// Audio codec
@@ -5105,7 +5131,31 @@ func (s *appState) executeSnippetJob(ctx context.Context, job *queue.Job, progre
 			args = append(args, "-crf", crfVal, "-maxrate", targetBitrate, "-bufsize", targetBitrate)
 		case "av1":
 			args = append(args, "-c:v", "libsvtav1")
-			args = append(args, "-crf", crfVal, "-maxrate", targetBitrate, "-bufsize", targetBitrate)
+			// Map x264/x265 presets to SVT-AV1 presets (0-13, lower=slower/better)
+			var svtPreset string
+			switch preset {
+			case "veryslow":
+				svtPreset = "3"
+			case "slower":
+				svtPreset = "4"
+			case "slow":
+				svtPreset = "5"
+			case "medium":
+				svtPreset = "6"
+			case "fast":
+				svtPreset = "8"
+			case "faster":
+				svtPreset = "9"
+			case "veryfast":
+				svtPreset = "10"
+			case "superfast":
+				svtPreset = "11"
+			case "ultrafast":
+				svtPreset = "12"
+			default:
+				svtPreset = "8" // Fast preset for snippets
+			}
+			args = append(args, "-preset", svtPreset, "-crf", crfVal, "-maxrate", targetBitrate, "-bufsize", targetBitrate)
 		case "copy":
 			args = append(args, "-c:v", "copy")
 		default: