Update docs

docs/extensions/writingToVideoFiles.markdown

@@ -4,17 +4,12 @@
 layout: default
 title: ScreenRecorder
 parent: Extensions
-last_modified_at: 2024.04.04 18:44:14 +0200
+last_modified_at: 2024.04.04 19:26:16 +0200
 nav_order: 120
 has_children: false
 ---
 
-# Writing to video files
-
-The `ffmpeg` command-line program is used for video output.
-
-If `ffmpeg` is not installed in your system OPENRNDR
-will attempt to use an embedded version of the program. 
+# Writing video files 
 
 ## The `ScreenRecorder` extension
 
@@ -36,6 +31,10 @@ fun main() = application {
 }
 ``` 
 
+Note: the `ffmpeg` command-line program is used for video output.
+If `ffmpeg` is not found in your system OPENRNDR
+will attempt to use an embedded version of it.
+
 ### Toggle the `ScreenRecorder` on and off
 
 By default the screen recorder extension adds video frames as long as the