From 3f7e2bd80e3c5d8a1682f20a1b245fcd974f295d Mon Sep 17 00:00:00 2001
From: bashonly <88596187+bashonly@users.noreply.github.com>
Date: Thu, 13 Apr 2023 14:21:09 -0500
Subject: [PATCH] [FFmpegFixupM3u8PP] Check audio codec before fixup (#6778)

Closes #6673
Authored by: bashonly
---
 yt_dlp/postprocessor/ffmpeg.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/yt_dlp/postprocessor/ffmpeg.py b/yt_dlp/postprocessor/ffmpeg.py
index 63fc9ace6..323f4303c 100644
--- a/yt_dlp/postprocessor/ffmpeg.py
+++ b/yt_dlp/postprocessor/ffmpeg.py
@@ -898,8 +898,11 @@ def _needs_fixup(self, info):
     @PostProcessor._restrict_to(images=False)
     def run(self, info):
         if all(self._needs_fixup(info)):
+            args = ['-f', 'mp4']
+            if self.get_audio_codec(info['filepath']) == 'aac':
+                args.extend(['-bsf:a', 'aac_adtstoasc'])
             self._fixup('Fixing MPEG-TS in MP4 container', info['filepath'], [
-                *self.stream_copy_opts(), '-f', 'mp4', '-bsf:a', 'aac_adtstoasc'])
+                *self.stream_copy_opts(), *args])
         return [], info