tweaked the --audio-quality input validation/specification

[youtube-dl] / youtube_dl / __init__.py

diff --git a/youtube_dl/__init__.py b/youtube_dl/__init__.py
index 2bc9a3fa6ec1d21175442e83d9b1514371d0414f..8817228f31ea9bd9073189a5980d2f56bbf30d44 100644 (file)
--- a/youtube_dl/__init__.py
+++ b/youtube_dl/__init__.py
@@ -297,7 +297,7 @@ def parseOpts():
        postproc.add_option('--audio-format', metavar='FORMAT', dest='audioformat', default='best',
                        help='"best", "aac", "vorbis", "mp3", "m4a", or "wav"; best by default')
        postproc.add_option('--audio-quality', metavar='QUALITY', dest='audioquality', default='5',
-                       help='ffmpeg/avconv audio quality specification, insert a value between 0 (highest) and 9 (lowest) or a specific bitrate like 128 (default 5)')
+                       help='ffmpeg/avconv audio quality specification, insert a value between 0 (better) and 9 (worse) for VBR or a specific bitrate like 128K (default 5)')
        postproc.add_option('-k', '--keep-video', action='store_true', dest='keepvideo', default=False,
                        help='keeps the video file on disk after the post-processing; the video is erased by default')
 
@@ -443,6 +443,10 @@ def _real_main():
        if opts.extractaudio:
                if opts.audioformat not in ['best', 'aac', 'mp3', 'vorbis', 'm4a', 'wav']:
                        parser.error(u'invalid audio format specified')
+       if opts.audioquality:
+               opts.audioquality = opts.audioquality.strip('k').strip('K')
+               if not opts.audioquality.isdigit():
+                       parser.error(u'invalid audio quality specified')
 
        # File downloader
        fd = FileDownloader({