diff --git a/yt_dlp/postprocessor/ffmpeg.py b/yt_dlp/postprocessor/ffmpeg.py
index 7b7534b63..9dd50340a 100644
--- a/yt_dlp/postprocessor/ffmpeg.py
+++ b/yt_dlp/postprocessor/ffmpeg.py
@@ -1213,7 +1213,7 @@ def __init__(self, info_dict, ffmpeg_args, hook_progress, ydl=None):
             (?:
                 frame=\s(?P<frame>\S+)\n
                 fps=\s(?P<fps>\S+)\n
-                stream\d+_\d+_q=\s(?P<stream_d_d_q>\S+)\n
+                stream_\d+_\d+_q=\s(?P<stream_d_d_q>\S+)\n
             )?
             bitrate=\s(?P<bitrate>\S+)\n
             total_size=\s(?P<total_size>\S+)\n