[YoutubeDL] Allow selection by more extensions

2 files changed, 7 insertions, 5 deletions

diff --git a/youtube_dl/YoutubeDL.py b/youtube_dl/YoutubeDL.py
index 36c71f947..24d6c2de7 100755
--- a/youtube_dl/YoutubeDL.py
+++ b/youtube_dl/YoutubeDL.py
@@ -786,7 +786,7 @@ class YoutubeDL(object):
             if video_formats:
                 return video_formats[0]
         else:
-            extensions = ['mp4', 'flv', 'webm', '3gp', 'm4a']
+            extensions = ['mp4', 'flv', 'webm', '3gp', 'm4a', 'mp3', 'ogg', 'aac', 'wav']
             if format_spec in extensions:
                 filter_f = lambda f: f['ext'] == format_spec
             else:
diff --git a/youtube_dl/options.py b/youtube_dl/options.py
index a018c1d71..058342dec 100644
--- a/youtube_dl/options.py
+++ b/youtube_dl/options.py
@@ -267,10 +267,12 @@ def parseOpts(overrideArguments=None):
         action='store', dest='format', metavar='FORMAT', default=None,
         help=(
             'video format code, specify the order of preference using'
-            ' slashes: -f 22/17/18 .  -f mp4 , -f m4a and  -f flv  are also'
-            ' supported. You can also use the special names "best",'
-            ' "bestvideo", "bestaudio", "worst", "worstvideo" and'
-            ' "worstaudio". By default, youtube-dl will pick the best quality.'
+            ' slashes, as in -f 22/17/18 . '
+            ' Instead of format codes, you can select by extension for the '
+            'extensions aac, m4a, mp3, mp4, ogg, wav, webm. '
+            'You can also use the special names "best",'
+            ' "bestvideo", "bestaudio", "worst". '
+            ' By default, youtube-dl will pick the best quality.'
             ' Use commas to download multiple audio formats, such as'
             ' -f  136/137/mp4/bestvideo,140/m4a/bestaudio.'
             ' You can merge the video and audio of two formats into a single'