From 08f556986a5a74a8425100813951697d169b4d31 Mon Sep 17 00:00:00 2001
From: abhinav-atul <abhinav_atul@outlook.com>
Date: Sun, 31 May 2026 02:13:43 +0530
Subject: [PATCH] fix: replace invalid fontweight param with bold=1 and fix
 fontfile set to name instead of path

---
 src/lib/text-overlay.ts | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/src/lib/text-overlay.ts b/src/lib/text-overlay.ts
index b7ca5c5c..ae3981db 100644
--- a/src/lib/text-overlay.ts
+++ b/src/lib/text-overlay.ts
@@ -89,16 +89,19 @@ export function buildTextFilter(
   const fontFileParam = getFFmpegFontArg(overlay.fontFamily, overlay.fontPath);
 
   // Build the drawtext filter with font support
-  let filter = `drawtext=text='${escapedText}':x=${pixelX}:y=${pixelY}:fontsize=${overlay.fontSize}:fontcolor=${overlay.color}:fontweight=${fontWeightParam}`;
+  let filter = `drawtext=text='${escapedText}':x=${pixelX}:y=${pixelY}:fontsize=${overlay.fontSize}:fontcolor=${overlay.color}`;
 
-  // Add font family if specified
-  if (overlay.fontFamily) {
-    // Sanitize font name for FFmpeg
-    const safeFontName = overlay.fontFamily.replace(/[^a-zA-Z0-9-]/g, "");
-    filter += `:fontfile='${safeFontName}'`;
+  // Add bold flag only when font weight is bold (fontweight= is not a valid FFmpeg option)
+  if (fontWeightParam === "bold") {
+    filter += `:bold=1`;
+  }
+
+  // For system fonts (no custom fontfile), use font= with the family name
+  // For custom fonts, use only the fontfile= path from getFFmpegFontArg
+  if (overlay.fontFamily && !fontFileParam) {
+    filter += `:font='${overlay.fontFamily}'`;
   }
 
-  // Add custom font file path if available
   if (fontFileParam) {
     filter += `:${fontFileParam}`;
   }