packages/vid-strip-meta: add package

Make it easier to just strip all metadata

Author: khaneliman

packages/vid-strip-meta/package.nix

@@ -0,0 +1,45 @@
+{
+  ffmpeg,
+  writeShellApplication,
+  ...
+}:
+writeShellApplication {
+  name = "vid-strip-meta";
+
+  meta.mainProgram = "vid-strip-meta";
+  checkPhase = "";
+
+  runtimeInputs = [
+    ffmpeg
+  ];
+
+  text = # bash
+    ''
+      if [ -z "''${1-}" ]; then
+        echo "Usage: vid-strip-meta <media_file>"
+        exit 1
+      fi
+
+      if [ ! -f "$1" ]; then
+        echo "Error: File not found: '$1'"
+        exit 1
+      fi
+
+      input_file="$1"
+      output_file="''${input_file%.*}_clean.''${input_file##*.}"
+
+      echo "Stripping metadata from '$input_file'..."
+      echo "Output will be: '$output_file'"
+
+      # -map_metadata -1: Removes global metadata (title, comments, etc.)
+      # -map_chapters -1: Removes chapter markers
+      # -c copy: Copies video/audio streams without re-encoding
+      if ffmpeg -i "$input_file" -map_metadata -1 -map_chapters -1 -c copy -y "$output_file"; then
+        echo "✅ Metadata successfully stripped. Clean file created at '$output_file'"
+      else
+        echo "❌ FFmpeg failed to process the file."
+        rm -f "$output_file" # Clean up incomplete file
+        exit 1
+      fi
+    '';
+}