Add --no-warnings option (Fixes #2630)

youtube_dl/YoutubeDL.py

@@ -94,6 +94,7 @@ class YoutubeDL(object):
     usenetrc:          Use netrc for authentication instead.
     verbose:           Print additional info to stdout.
     quiet:             Do not print messages to stdout.
+    no_warnings:       Do not print out anything for warnings.
     forceurl:          Force printing final URL.
     forcetitle:        Force printing title.
     forceid:           Force printing ID.
@@ -376,6 +377,8 @@ class YoutubeDL(object):
         if self.params.get('logger') is not None:
             self.params['logger'].warning(message)
         else:
+            if self.params.get('no_warnings'):
+                return
             if self._err_file.isatty() and os.name != 'nt':
                 _msg_header = '\033[0;33mWARNING:\033[0m'
             else:

youtube_dl/__init__.py

@@ -364,6 +364,10 @@ def parseOpts(overrideArguments=None):
 
     verbosity.add_option('-q', '--quiet',
             action='store_true', dest='quiet', help='activates quiet mode', default=False)
+    verbosity.add_option(
+        '--no-warnings',
+        dest='no_warnings', action='store_true', default=False,
+        help='Ignore warnings')
     verbosity.add_option('-s', '--simulate',
             action='store_true', dest='simulate', help='do not download the video and do not write anything to disk', default=False)
     verbosity.add_option('--skip-download',
@@ -708,6 +712,7 @@ def _real_main(argv=None):
         'password': opts.password,
         'videopassword': opts.videopassword,
         'quiet': (opts.quiet or any_printing),
+        'no_warnings': opts.no_warnings,
         'forceurl': opts.geturl,
         'forcetitle': opts.gettitle,
         'forceid': opts.getid,