Add ffmpeg installer and add ./bin to PATH

menus/ffmpeg_missing.py

@@ -0,0 +1,61 @@
+import arcade, arcade.gui
+
+import os, sys, subprocess, platform, urllib.request, zipfile, logging
+
+class FFmpegMissing(arcade.gui.UIView):
+    def __init__(self):
+        super().__init__()
+
+    def on_show_view(self):
+        super().on_show_view()
+
+        msgbox = self.add_widget(
+            arcade.gui.UIMessageBox(
+                width=self.window.width / 2,
+                height=self.window.height / 2,
+                title="FFmpeg Missing",
+                message_text="FFmpeg has not been found but is required for this application.",
+                buttons=("Exit", "Auto Install")
+            )
+        )
+
+        msgbox.on_action = lambda event: self.install_ffmpeg() if event.action == "Auto Install" else sys.exit()
+
+    def install_ffmpeg(self):
+        bin_dir = os.path.join(os.getcwd(), "bin")
+        os.makedirs(bin_dir, exist_ok=True)
+
+        system = platform.system()
+
+        if system == "Linux" or system == "Darwin":
+            url = "https://evermeet.cx/ffmpeg/ffmpeg-7.1.1.zip"
+            filename = "ffmpeg.zip"
+
+            logging.debug(f"Downloading FFmpeg from {url}...")
+            file_path = os.path.join(bin_dir, filename)
+            urllib.request.urlretrieve(url, file_path)
+
+            logging.debug("Extracting FFmpeg...")
+            with zipfile.ZipFile(file_path, 'r') as zip_ref:
+                zip_ref.extractall(bin_dir)
+            ffmpeg_path = os.path.join(bin_dir, "ffmpeg")
+            os.chmod(ffmpeg_path, 0o755)
+
+            os.remove(file_path)
+            logging.debug("FFmpeg installed in ./bin")
+
+        elif system == "Windows":
+            try:
+                subprocess.run([
+                    "winget", "install", "--id=Gyan.FFmpeg", "--scope=user",
+                    "--accept-source-agreements", "--accept-package-agreements"
+                ], check=True)
+                logging.debug("FFmpeg installed via winget.")
+            except subprocess.CalledProcessError as e:
+                logging.debug("Failed to install FFmpeg via winget:", e)
+
+        else:
+            logging.error(f"Unsupported OS: {system}")
+
+        from menus.main import Main
+        self.window.show_view(Main())