diff --git a/build.sh b/build.sh
index 1a0f3f6..4cfa1b5 100755
--- a/build.sh
+++ b/build.sh
@@ -3,7 +3,7 @@
 VERSION=8
 MINOR=3
 PATCH=
-EXTRAVERSION="-rc3"
+EXTRAVERSION="-rc4"
 
 NOTES="(#308 #309 #310)"
 BRANCH="dev"
diff --git a/pyproject.toml b/pyproject.toml
index 71cf99c..c35cd5c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "pytubefix"
-version = "8.3-rc3"
+version = "8.3-rc4"
 authors = [
   { name="Juan Bindez", email="juanbindez780@gmail.com" },
 ]
diff --git a/pytubefix/cli.py b/pytubefix/cli.py
index c0df6eb..346f29f 100644
--- a/pytubefix/cli.py
+++ b/pytubefix/cli.py
@@ -266,74 +266,86 @@ def display_streams(youtube: YouTube) -> None:
 
 
 def _parse_args(parser: argparse.ArgumentParser, args: Optional[List] = None) -> argparse.Namespace:
-    parser.add_argument("url", help="URL do vídeo ou playlist do YouTube", nargs="?")
+    parser.add_argument("url", help="The YouTube /watch or /playlist url", nargs="?")
     parser.add_argument("-V", "--version", action="version", version=f"%(prog)s {__version__}")
-    parser.add_argument("--itag", type=int, help="Itag do stream desejado")
-    parser.add_argument("-r", "--resolution", type=str, help="Resolução do stream desejado")
-    parser.add_argument("-l", "--list", action="store_true", help="Listar streams disponíveis para download")
-    parser.add_argument("--oauth", action="store_true", help="Usar token OAuth")
-    parser.add_argument("-v", "--verbose", action="store_true", help="Ativar logs detalhados")
-    parser.add_argument("--logfile", help="Arquivo para logs de debug e erro")
-    parser.add_argument("--build-playback-report", action="store_true", help="Salvar HTML e JS no disco")
-    parser.add_argument("-c", "--caption-code", type=str, help="Baixar legendas no código de idioma especificado")
-    parser.add_argument("-lc", "--list-captions", action="store_true", help="Listar códigos de legendas disponíveis")
-    parser.add_argument("-t", "--target", help="Diretório de saída para o stream baixado")
-    parser.add_argument("-a", "--audio", const="mp4", nargs="?", help="Baixar áudio na maior qualidade disponível (padrão: mp4)")
-    parser.add_argument("-f", "--ffmpeg", const="best", nargs="?", help="Baixar áudio e vídeo e combiná-los")
+    parser.add_argument("--itag", type=int, help="The itag for the desired stream")
+    parser.add_argument("-r", "--resolution", type=str, help="The resolution for the desired stream")
+    parser.add_argument("-l", "--list", action="store_true", help="The list option causes pytubefix cli to return a list of streams available to download")
+    parser.add_argument("--oauth", action="store_true", help="use oauth token")
+    parser.add_argument("-v", "--verbose", action="store_true", dest="verbose", help="Set logger output to verbose output.")
+    parser.add_argument("--logfile", action="store", help="logging debug and error messages into a log file")
+    parser.add_argument("--build-playback-report", action="store_true", help="Save the html and js to disk")
+    parser.add_argument("-c", "--caption-code", type=str, help="Download srt captions for given language code. Prints available language codes if no argument given")
+    parser.add_argument('-lc', '--list-captions', action='store_true', help="List available caption codes for a video")
+    parser.add_argument("-t", "--target", help="The output directory for the downloaded stream. Default is current working directory")
+    parser.add_argument("-a", "--audio", const="mp4", nargs="?", help="Download the audio for a given URL at the highest bitrate available. Defaults to mp4 format if none is specified")
+    parser.add_argument("-f", "--ffmpeg", const="best", nargs="?", help="Downloads the audio and video stream for resolution provided. If no resolution is provided, downloads the best resolution. Runs the command line program ffmpeg to combine the audio and video")
+
     return parser.parse_args(args)
 
 def _perform_args_on_youtube(youtube: YouTube, args: argparse.Namespace) -> None:
+    if len(sys.argv) == 2:
+        download_highest_resolution_progressive(youtube=youtube, resolution="highest", target=args.target)
+        return  # Exit early as no further actions are needed
+
     if args.list_captions:
         _print_available_captions(youtube.captions)
     if args.list:
         display_streams(youtube)
+
     if args.itag:
-        download_by_itag(youtube, itag=args.itag, target=args.target)
+        download_by_itag(youtube=youtube, itag=args.itag, target=args.target)
     elif args.caption_code:
-        download_caption(youtube, lang_code=args.caption_code, target=args.target)
+        download_caption(youtube=youtube, lang_code=args.caption_code, target=args.target)
     elif args.resolution:
-        download_by_resolution(youtube, resolution=args.resolution, target=args.target)
+        download_by_resolution(youtube=youtube, resolution=args.resolution, target=args.target)
     elif args.audio:
-        download_audio(youtube, filetype=args.audio, target=args.target)
+        download_audio(youtube=youtube, filetype=args.audio, target=args.target)
+    
     if args.ffmpeg:
-        ffmpeg_process(youtube, resolution=args.resolution, target=args.target)
+        ffmpeg_process(youtube=youtube, resolution=args.resolution, target=args.target)
+
     if args.build_playback_report:
         build_playback_report(youtube)
 
+    global oauth, cache
+
+    oauth = False
+    cache = False
+
+    if args.oauth:
+        oauth = True
+        cache = True
+
 def main():
-    parser = argparse.ArgumentParser(description="Baixador de vídeos e playlists do YouTube")
+    parser = argparse.ArgumentParser(description=main.__doc__)
     args = _parse_args(parser)
 
-    setup_logger(logging.DEBUG if args.verbose else logging.INFO, log_filename=args.logfile)
+    log_filename = args.logfile if args.verbose else None
+    setup_logger(logging.DEBUG if args.verbose else logging.INFO, log_filename=log_filename)
 
     if args.verbose:
-        logging.debug(f"Versão do Pytubefix: {__version__}")
+        logger.debug(f'Pytubefix version: {__version__}')
 
     if not args.url or "youtu" not in args.url:
         parser.print_help()
-        sys.exit("Erro: URL do YouTube inválida ou ausente")
-
-    oauth, cache = args.oauth, args.oauth
-
-    try:
-        if "/playlist" in args.url:
-            print("Carregando playlist...")
-            playlist = Playlist(args.url, use_oauth=oauth, allow_oauth_cache=cache)
-            args.target = args.target or safe_filename(playlist.title)
-
-            for video in playlist.videos:
-                try:
-                    _perform_args_on_youtube(video, args)
-                except exceptions.PytubeFixError as e:
-                    print(f"Erro com o vídeo {video}: {e}")
-
-        else:
-            print("Carregando vídeo...")
-            youtube = YouTube(args.url, use_oauth=oauth, allow_oauth_cache=cache)
-            _perform_args_on_youtube(youtube, args)
-
-    except exceptions.PytubeFixError as e:
-        sys.exit(f"Ocorreu um erro: {e}")
+        sys.exit(0)
+
+    if "/playlist" in args.url:
+        print("Loading playlist...")
+        playlist = Playlist(args.url, use_oauth=oauth, allow_oauth_cache=cache)
+        args.target = args.target or safe_filename(playlist.title)
+
+        for youtube_video in playlist.videos:
+            try:
+                _perform_args_on_youtube(youtube_video, args)
+            except exceptions.PytubeFixError as e:
+                print(f"There was an error with video: {youtube_video}")
+                print(e)
+    else:
+        print("Loading video...")
+        youtube = YouTube(args.url, use_oauth=oauth, allow_oauth_cache=cache)
+        _perform_args_on_youtube(youtube, args)
 
 if __name__ == "__main__":
-    main()
\ No newline at end of file
+    main()
diff --git a/pytubefix/version.py b/pytubefix/version.py
index eb2be79..560c7ee 100644
--- a/pytubefix/version.py
+++ b/pytubefix/version.py
@@ -1,4 +1,4 @@
-__version__ = "8.3-rc3"
+__version__ = "8.3-rc4"
 
 if __name__ == "__main__":
     print(__version__)
\ No newline at end of file