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-rwxr-xr-xyoutube_dl/YoutubeDL.py6
1 files changed, 6 insertions, 0 deletions
diff --git a/youtube_dl/YoutubeDL.py b/youtube_dl/YoutubeDL.py
index 9a8c7da05..c642a1fbf 100755
--- a/youtube_dl/YoutubeDL.py
+++ b/youtube_dl/YoutubeDL.py
@@ -1110,6 +1110,12 @@ class YoutubeDL(object):
'contain the video, try using '
'"-f %s+%s"' % (format_2, format_1))
return
+ # Formats must be opposite (video+audio)
+ if formats_info[0].get('acodec') == 'none' and formats_info[1].get('acodec') == 'none':
+ self.report_error(
+ 'Both formats %s and %s are video-only, you must specify "-f video+audio"'
+ % (format_1, format_2))
+ return
output_ext = (
formats_info[0]['ext']
if self.params.get('merge_output_format') is None