From de7c27cd2545d6a9d75d8142af27d5cb7151ed9a Mon Sep 17 00:00:00 2001
From: felix <felix.von.s@posteo.de>
Date: Mon, 3 Aug 2015 17:43:57 +0200
Subject: [PATCH] [dispeak] mark the "slides" stream as video-only

---
 youtube_dlc/extractor/dispeak.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/youtube_dlc/extractor/dispeak.py b/youtube_dlc/extractor/dispeak.py
index c345e0274..22bdc5635 100644
--- a/youtube_dlc/extractor/dispeak.py
+++ b/youtube_dlc/extractor/dispeak.py
@@ -93,6 +93,7 @@ class DigitallySpeakingIE(InfoExtractor):
             'quality': -2,
             'preference': -2,
             'format_id': 'slides',
+            'acodec': 'none',
         })
         speaker_video_path = xpath_text(metadata, './speakerVideo', fatal=True)
         formats.append({