diff --git a/README.md b/README.md
index aac359ab9..159329277 100644
--- a/README.md
+++ b/README.md
@@ -1204,6 +1204,10 @@ To summarize, the general syntax for a field is:
 
 Additionally, you can set different output templates for the various metadata files separately from the general output template by specifying the type of file followed by the template separated by a colon `:`. The different file types supported are `subtitle`, `thumbnail`, `description`, `annotation` (deprecated), `infojson`, `link`, `pl_thumbnail`, `pl_description`, `pl_infojson`, `chapter`, `pl_video`. E.g. `-o "%(title)s.%(ext)s" -o "thumbnail:%(title)s\%(title)s.%(ext)s"`  will put the thumbnails in a folder with the same name as the video. If any of the templates is empty, that type of file will not be written. E.g. `--write-thumbnail -o "thumbnail:"` will write thumbnails only for playlists and not for video.
 
+<a id="outtmpl-postprocess-note"></a>
+
+Note: Due to post-processing (i.e. merging etc.), the actual output filename might differ. Use `--print after_move:filepath` to get the name after all post-processing is complete.
+
 The available fields are:
 
  - `id` (string): Video identifier
@@ -1304,7 +1308,7 @@ Available only when using `--download-sections` and for `chapter:` prefix when u
 Available only when used in `--print`:
 
  - `urls` (string): The URLs of all requested formats, one in each line
- - `filename` (string): Name of the video file. Note that the actual filename may be different due to post-processing. Use `--exec echo` to get the name after all postprocessing is complete
+ - `filename` (string): Name of the video file. Note that the [actual filename may differ](#outtmpl-postprocess-note)
  - `formats_table` (table): The video format table as printed by `--list-formats`
  - `thumbnails_table` (table): The thumbnail format table as printed by `--list-thumbnails`
  - `subtitles_table` (table): The subtitle format table as printed by `--list-subs`
diff --git a/test/helper.py b/test/helper.py
index 139bdafc3..0b90660ff 100644
--- a/test/helper.py
+++ b/test/helper.py
@@ -254,14 +254,11 @@ def expect_info_dict(self, got_dict, expected_dict):
                 return v.__name__
             else:
                 return repr(v)
-        info_dict_str = ''
-        if len(missing_keys) != len(expected_dict):
-            info_dict_str += ''.join(
-                f'    {_repr(k)}: {_repr(v)},\n'
-                for k, v in test_info_dict.items() if k not in missing_keys)
-
-            if info_dict_str:
-                info_dict_str += '\n'
+        info_dict_str = ''.join(
+            f'    {_repr(k)}: {_repr(v)},\n'
+            for k, v in test_info_dict.items() if k not in missing_keys)
+        if info_dict_str:
+            info_dict_str += '\n'
         info_dict_str += ''.join(
             f'    {_repr(k)}: {_repr(test_info_dict[k])},\n'
             for k in missing_keys)
diff --git a/yt_dlp/__main__.py b/yt_dlp/__main__.py
index ff5d71d3c..78701df8d 100644
--- a/yt_dlp/__main__.py
+++ b/yt_dlp/__main__.py
@@ -5,7 +5,7 @@
 
 import sys
 
-if __package__ is None and not hasattr(sys, 'frozen'):
+if __package__ is None and not getattr(sys, 'frozen', False):
     # direct call of __main__.py
     import os.path
     path = os.path.realpath(os.path.abspath(__file__))
diff --git a/yt_dlp/extractor/slideslive.py b/yt_dlp/extractor/slideslive.py
index 72ca56057..87d0fec32 100644
--- a/yt_dlp/extractor/slideslive.py
+++ b/yt_dlp/extractor/slideslive.py
@@ -9,6 +9,7 @@ from ..utils import (
 
 class SlidesLiveIE(InfoExtractor):
     _VALID_URL = r'https?://slideslive\.com/(?P<id>[0-9]+)'
+    _WORKING = False
     _TESTS = [{
         # video_service_name = YOUTUBE
         'url': 'https://slideslive.com/38902413/gcc-ia16-backend',
diff --git a/yt_dlp/extractor/testurl.py b/yt_dlp/extractor/testurl.py
index 2bce3b239..dccca1004 100644
--- a/yt_dlp/extractor/testurl.py
+++ b/yt_dlp/extractor/testurl.py
@@ -21,7 +21,7 @@ class TestURLIE(InfoExtractor):
         matching_extractors = [e for e in gen_extractor_classes() if rex.search(e.IE_NAME)]
 
         if len(matching_extractors) == 0:
-            raise ExtractorError('No extractors matching {extractor_id!r} found', expected=True)
+            raise ExtractorError(f'No extractors matching {extractor_id!r} found', expected=True)
         elif len(matching_extractors) > 1:
             try:  # Check for exact match
                 extractor = next(
diff --git a/yt_dlp/postprocessor/ffmpeg.py b/yt_dlp/postprocessor/ffmpeg.py
index 7d55373e1..67890fc31 100644
--- a/yt_dlp/postprocessor/ffmpeg.py
+++ b/yt_dlp/postprocessor/ffmpeg.py
@@ -137,7 +137,7 @@ class FFmpegPostProcessor(PostProcessor):
         path = self._paths.get(prog)
         if path in self._version_cache:
             return self._version_cache[path], self._features_cache.get(path, {})
-        out = _get_exe_version_output(path, ['-bsfs'], to_screen=self.write_debug)
+        out = _get_exe_version_output(path, ['-bsfs'])
         ver = detect_exe_version(out) if out else False
         if ver:
             regexs = [
diff --git a/yt_dlp/update.py b/yt_dlp/update.py
index 6208aad8a..ac3e28057 100644
--- a/yt_dlp/update.py
+++ b/yt_dlp/update.py
@@ -30,13 +30,13 @@ API_URL = f'https://api.github.com/repos/{REPOSITORY}/releases'
 @functools.cache
 def _get_variant_and_executable_path():
     """@returns (variant, executable_path)"""
-    if hasattr(sys, 'frozen'):
+    if getattr(sys, 'frozen', False):
         path = sys.executable
         if not hasattr(sys, '_MEIPASS'):
             return 'py2exe', path
-        if sys._MEIPASS == os.path.dirname(path):
+        elif sys._MEIPASS == os.path.dirname(path):
             return f'{sys.platform}_dir', path
-        if sys.platform == 'darwin':
+        elif sys.platform == 'darwin':
             machine = '_legacy' if version_tuple(platform.mac_ver()[0]) < (10, 15) else ''
         else:
             machine = f'_{platform.machine().lower()}'
@@ -288,7 +288,7 @@ class Updater:
         # There is no sys.orig_argv in py < 3.10. Also, it can be [] when frozen
         if getattr(sys, 'orig_argv', None):
             return sys.orig_argv
-        elif hasattr(sys, 'frozen'):
+        elif getattr(sys, 'frozen', False):
             return sys.argv
 
     def restart(self):
diff --git a/yt_dlp/utils.py b/yt_dlp/utils.py
index 4c44f4845..04a0956c9 100644
--- a/yt_dlp/utils.py
+++ b/yt_dlp/utils.py
@@ -2698,9 +2698,7 @@ def check_executable(exe, args=[]):
     return exe
 
 
-def _get_exe_version_output(exe, args, *, to_screen=None):
-    if to_screen:
-        to_screen(f'Checking exe version: {shell_quote([exe] + args)}')
+def _get_exe_version_output(exe, args):
     try:
         # STDIN should be redirected too. On UNIX-like systems, ffmpeg triggers
         # SIGTTOU if yt-dlp is run in the background.