diff --git a/yt_dlp/YoutubeDL.py b/yt_dlp/YoutubeDL.py
index 309489672..67ca90349 100644
--- a/yt_dlp/YoutubeDL.py
+++ b/yt_dlp/YoutubeDL.py
@@ -2219,6 +2219,7 @@ def _check_formats(self, formats):
                         self.report_warning(f'Unable to delete temporary file "{temp_file.name}"')
             f['__working'] = success
             if success:
+                f.pop('__needs_testing', None)
                 yield f
             else:
                 self.to_screen('[info] Unable to download format {}. Skipping...'.format(f['format_id']))
@@ -3963,6 +3964,7 @@ def simplified_codec(f, field):
                     self._format_out('UNSUPPORTED', self.Styles.BAD_FORMAT) if f.get('ext') in ('f4f', 'f4m') else None,
                     (self._format_out('Maybe DRM', self.Styles.WARNING) if f.get('has_drm') == 'maybe'
                      else self._format_out('DRM', self.Styles.BAD_FORMAT) if f.get('has_drm') else None),
+                    self._format_out('Untested', self.Styles.WARNING) if f.get('__needs_testing') else None,
                     format_field(f, 'format_note'),
                     format_field(f, 'container', ignore=(None, f.get('ext'))),
                     delim=', '), delim=' '),