on Windows)
--flat-playlist Do not extract the videos of a playlist,
only list them.
+ --no-color Do not emit color codes in output.
## Network Options:
--proxy URL Use the specified HTTP/HTTPS proxy. Pass in
--playlist-reverse Download playlist videos in reverse order
--xattr-set-filesize (experimental) set file xattribute
ytdl.filesize with expected filesize
+ --hls-prefer-native (experimental) Use the native HLS
+ downloader instead of ffmpeg.
--external-downloader COMMAND (experimental) Use the specified external
downloader. Currently supports
aria2c,curl,wget
postprocessors (default)
--prefer-ffmpeg Prefer ffmpeg over avconv for running the
postprocessors
+ --ffmpeg-location PATH Location of the ffmpeg/avconv binary;
+ either the path to the binary or its
+ containing directory.
--exec CMD Execute a command on the file after
downloading, similar to find's -exec
syntax. Example: --exec 'adb push {}
### ERROR: no fmt_url_map or conn information found in video info
-youtube has switched to a new video info format in July 2011 which is not supported by old versions of youtube-dl. You can update youtube-dl with `sudo youtube-dl --update`.
+YouTube has switched to a new video info format in July 2011 which is not supported by old versions of youtube-dl. See [above](#how-do-i-update-youtube-dl) for how to update youtube-dl.
### ERROR: unable to download video ###
-youtube requires an additional signature since September 2012 which is not supported by old versions of youtube-dl. You can update youtube-dl with `sudo youtube-dl --update`.
+YouTube requires an additional signature since September 2012 which is not supported by old versions of youtube-dl. See [above](#how-do-i-update-youtube-dl) for how to update youtube-dl.
+
+### ExtractorError: Could not find JS function u'OF'
+
+In February 2015, the new YouTube player contained a character sequence in a string that was misinterpreted by old versions of youtube-dl. See [above](#how-do-i-update-youtube-dl) for how to update youtube-dl.
### SyntaxError: Non-ASCII character ###