Update README.md (#11787)

Add audio format argument dependency warning
8 years ago · f4ec8dce48
parent f3c21cb7a7
commit f4ec8dce48
1 changed files with 1 additions and 1 deletions
--- a/youtube_dl/options.py
+++ b/youtube_dl/options.py
@ -751,7 +751,7 @@ def parseOpts(overrideArguments=None):
        help='Convert video files to audio-only files (requires ffmpeg or avconv and ffprobe or avprobe)')
    postproc.add_option(
        '--audio-format', metavar='FORMAT', dest='audioformat', default='best',
-        help='Specify audio format: "best", "aac", "vorbis", "mp3", "m4a", "opus", or "wav"; "%default" by default')
+        help='Specify audio format: "best", "aac", "vorbis", "mp3", "m4a", "opus", or "wav"; "%default" by default; No effect without -x')
    postproc.add_option(
        '--audio-quality', metavar='QUALITY',
        dest='audioquality', default='5',