[docs,cleanup] Some minor refactoring and improve docs

1 files changed, 14 insertions, 15 deletions

diff --git a/yt_dlp/postprocessor/ffmpeg.py b/yt_dlp/postprocessor/ffmpeg.py
index 058926929..311170920 100644
--- a/yt_dlp/postprocessor/ffmpeg.py
+++ b/yt_dlp/postprocessor/ffmpeg.py
@@ -478,7 +478,7 @@ class FFmpegExtractAudioPP(FFmpegPostProcessor):
 class FFmpegVideoConvertorPP(FFmpegPostProcessor):
     SUPPORTED_EXTS = ('mp4', 'mkv', 'flv', 'webm', 'mov', 'avi', 'mp3', 'mka', 'm4a', 'ogg', 'opus')
     FORMAT_RE = re.compile(r'{0}(?:/{0})*$'.format(r'(?:\w+>)?(?:%s)' % '|'.join(SUPPORTED_EXTS)))
-    _action = 'converting'
+    _ACTION = 'converting'
 
     def __init__(self, downloader=None, preferedformat=None):
         super(FFmpegVideoConvertorPP, self).__init__(downloader)
@@ -497,29 +497,28 @@ class FFmpegVideoConvertorPP(FFmpegPostProcessor):
         return []
 
     @PostProcessor._restrict_to(images=False)
-    def run(self, information):
-        path, source_ext = information['filepath'], information['ext'].lower()
+    def run(self, info):
+        filename, source_ext = info['filepath'], info['ext'].lower()
         target_ext = self._target_ext(source_ext)
         _skip_msg = (
-            'could not find a mapping for %s' if not target_ext
-            else 'already is in target format %s' if source_ext == target_ext
+            f'could not find a mapping for {source_ext}' if not target_ext
+            else f'already is in target format {source_ext}' if source_ext == target_ext
             else None)
         if _skip_msg:
-            self.to_screen('Not %s media file "%s"; %s' % (self._action, path, _skip_msg % source_ext))
-            return [], information
+            self.to_screen(f'Not {self._ACTION} media file {filename!r}; {_skip_msg}')
+            return [], info
 
-        prefix, sep, oldext = path.rpartition('.')
-        outpath = prefix + sep + target_ext
-        self.to_screen('%s video from %s to %s; Destination: %s' % (self._action.title(), source_ext, target_ext, outpath))
-        self.run_ffmpeg(path, outpath, self._options(target_ext))
+        outpath = replace_extension(filename, target_ext, source_ext)
+        self.to_screen(f'{self._ACTION.title()} video from {source_ext} to {target_ext}; Destination: {outpath}')
+        self.run_ffmpeg(filename, outpath, self._options(target_ext))
 
-        information['filepath'] = outpath
-        information['format'] = information['ext'] = target_ext
-        return [path], information
+        info['filepath'] = outpath
+        info['format'] = info['ext'] = target_ext
+        return [filename], info
 
 
 class FFmpegVideoRemuxerPP(FFmpegVideoConvertorPP):
-    _action = 'remuxing'
+    _ACTION = 'remuxing'
 
     @staticmethod
     def _options(target_ext):