fix: Fix 4 critical bugs preventing pipeline from running

1. reddit/subreddit.py: passkey= → password= (PRAW correct param name)
2. reddit/subreddit.py: bare except → Exception with sys.exit(1)
   Prevents UnboundLocalError when reddit object not created
3. screenshot_downloader.py: NSFW hardcoded #t3_12hmbug selector →
   generic button selector that works with any NSFW post
4. final_video.py: h264_nvenc hardcoded → auto-detect GPU encoder,
   fallback to libx264 for machines without NVIDIA GPU

https://claude.ai/code/session_01G67vV3sJLXtm2q9r9FcF7L

reddit/subreddit.py

@@ -1,4 +1,5 @@
 import re
+import sys
 
 import praw
 from praw.models import MoreComments
@@ -38,14 +39,16 @@ def get_subreddit_threads(POST_ID: str):
             client_secret=settings.config["reddit"]["creds"]["client_secret"],
             user_agent="Accessing Reddit threads",
             username=username,
-            passkey=passkey,
+            password=passkey,
             check_for_async=False,
         )
     except ResponseException as e:
         if e.response.status_code == 401:
             print("Invalid credentials - please check them in config.toml")
-    except:
-        print("Something went wrong...")
+        sys.exit(1)
+    except Exception as e:
+        print(f"Something went wrong logging into Reddit: {e}")
+        sys.exit(1)
 
     # Ask user for subreddit input
     print_step("Getting subreddit threads...")

video_creation/final_video.py

@@ -1,6 +1,8 @@
 import multiprocessing
 import os
 import re
+import shutil
+import subprocess
 import tempfile
 import textwrap
 import threading
@@ -10,6 +12,21 @@ from pathlib import Path
 from typing import Dict, Final, Tuple
 
 import ffmpeg
+
+
+def _get_video_codec() -> str:
+    try:
+        result = subprocess.run(
+            ["ffmpeg", "-encoders"], capture_output=True, text=True, timeout=10
+        )
+        if "h264_nvenc" in result.stdout:
+            return "h264_nvenc"
+    except (subprocess.TimeoutExpired, FileNotFoundError):
+        pass
+    return "libx264"
+
+
+VIDEO_CODEC = _get_video_codec()
 import translators
 from PIL import Image, ImageDraw, ImageFont
 from rich.console import Console
@@ -93,7 +110,7 @@ def prepare_background(reddit_id: str, W: int, H: int) -> str:
             output_path,
             an=None,
             **{
-                "c:v": "h264_nvenc",
+                "c:v": VIDEO_CODEC,
                 "b:v": "20M",
                 "b:a": "192k",
                 "threads": multiprocessing.cpu_count(),
@@ -438,7 +455,7 @@ def make_final_video(
                 path,
                 f="mp4",
                 **{
-                    "c:v": "h264_nvenc",
+                    "c:v": VIDEO_CODEC,
                     "b:v": "20M",
                     "b:a": "192k",
                     "threads": multiprocessing.cpu_count(),
@@ -468,7 +485,7 @@ def make_final_video(
                     path,
                     f="mp4",
                     **{
-                        "c:v": "h264_nvenc",
+                        "c:v": VIDEO_CODEC,
                         "b:v": "20M",
                         "b:a": "192k",
                         "threads": multiprocessing.cpu_count(),

video_creation/screenshot_downloader.py

@@ -145,16 +145,11 @@ def get_screenshots_of_reddit_posts(reddit_object: dict, screenshot_num: int):
         page.wait_for_load_state()
         page.wait_for_timeout(5000)
 
-        if page.locator(
-            "#t3_12hmbug > div > div._3xX726aBn29LDbsDtzr_6E._1Ap4F5maDtT1E1YuCiaO0r.D3IL3FD0RFy_mkKLPwL4 > div > div > button"
-        ).is_visible():
-            # This means the post is NSFW and requires to click the proceed button.
-
+        nsfw_button = page.locator("button:has-text('Yes'), button:has-text('Continue'), [data-testid='content-gate'] button").first
+        if nsfw_button.is_visible():
             print_substep("Post is NSFW. You are spicy...")
-            page.locator(
-                "#t3_12hmbug > div > div._3xX726aBn29LDbsDtzr_6E._1Ap4F5maDtT1E1YuCiaO0r.D3IL3FD0RFy_mkKLPwL4 > div > div > button"
-            ).click()
-            page.wait_for_load_state()  # Wait for page to fully load
+            nsfw_button.click()
+            page.wait_for_load_state()
 
             # translate code
         if page.locator(