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@@ -319,7 +319,8 @@ which means you can modify it, redistribute it or use it however you like.
--all-formats Download all available video formats
--prefer-free-formats Prefer free video formats unless a specific
one is requested
- -F, --list-formats List all available formats
+ -F, --list-formats List all available formats of specified
+ videos
--youtube-skip-dash-manifest Do not download the DASH manifests and
related data on YouTube videos
--merge-output-format FORMAT If a merge is required (e.g.
@@ -329,8 +330,8 @@ which means you can modify it, redistribute it or use it however you like.
## Subtitle Options:
--write-sub Write subtitle file
- --write-auto-sub Write automatic subtitle file (YouTube
- only)
+ --write-auto-sub Write automatically generated subtitle file
+ (YouTube only)
--all-subs Download all the available subtitles of the
video
--list-subs List all available subtitles for the video
@@ -534,6 +535,12 @@ Most people asking this question are not aware that youtube-dl now defaults to d
Apparently YouTube requires you to pass a CAPTCHA test if you download too much. We're [considering to provide a way to let you solve the CAPTCHA](https://github.com/rg3/youtube-dl/issues/154), but at the moment, your best course of action is pointing a webbrowser to the youtube URL, solving the CAPTCHA, and restart youtube-dl.
+### Do I need any other programs?
+
+youtube-dl works fine on its own on most sites. However, if you want to convert video/audio, you'll need [avconv](https://libav.org/) or [ffmpeg](https://www.ffmpeg.org/). On some sites - most notably YouTube - videos can be retrieved in a higher quality format without sound. youtube-dl will detect whether avconv/ffmpeg is present and automatically pick the best option.
+
+Videos or video formats streamed via RTMP protocol can only be downloaded when [rtmpdump](https://rtmpdump.mplayerhq.hu/) is installed. Downloading MMS and RTSP videos requires either [mplayer](http://mplayerhq.hu/) or [mpv](https://mpv.io/) to be installed.
+
### I have downloaded a video but how can I play it?
Once the video is fully downloaded, use any video player, such as [vlc](http://www.videolan.org) or [mplayer](http://www.mplayerhq.hu/).