Convert VTT to SRT

Author: nattadasu

post_vtt_converter.groovy

@@ -0,0 +1,36 @@
+{ source, target, metadata ->
+    // Only process video files
+    if (!f.video) {
+        return
+    }
+
+    // Detect Windows platform
+    def is_windows = System.getProperty("os.name").toLowerCase().contains("windows")
+
+    // Path to convert_vtt_to_ass.py script
+    def convert_script = is_windows ? "C:\\Users\\nattadasu\\Scripts\\convert_vtt_to_ass.py" : "/home/nattadasu/Scripts/convert_vtt_to_ass.py"
+    def convert_py_file = new File(convert_script)
+    if (!convert_py_file.exists()) {
+        println("[VTT Converter] Error: convert_vtt_to_ass.py not found at ${convert_script}")
+        return
+    }
+
+    // Find VTT subtitle files derived from this video file
+    target.dir.listFiles().findAll{ it.subtitle && it.ext == 'vtt' && it.isDerived(target) }.each { vtt_file ->
+        try {
+            println("[VTT Converter] Converting: ${vtt_file.name}")
+
+            // Call convert_vtt_to_ass.py using the venv python binary
+            def python_bin = is_windows ? "C:\\Users\\nattadasu\\Scripts\\.venv\\Scripts\\python.exe" : "/home/nattadasu/Scripts/.venv/bin/python3"
+            system python_bin, convert_script, vtt_file.toString()
+
+            // Delete original VTT file
+            vtt_file.delete()
+
+            println("[VTT Converter] ✓ Converted ${vtt_file.name} to ASS")
+
+        } catch (Exception e) {
+            println("[VTT Converter] Error processing ${vtt_file.name}: ${e.message}")
+        }
+    }
+}