<li>Your exact command line, like <codestyle="white-space: pre;">youtube-dl -t "http://www.youtube.com/watch?v=uHlDtZ6Oc3s&feature=channel_video_title"</code></li>
<li>The output of <code>youtube-dl --version</code>. If you have made any changes, please provide it. In many cases, simply updating (with <codestyle="white-space: pre;">youtube-dl --update</code>) fixes the problem.</li>
<li>The output of <code>python --version</code>. We support Python 2.5+, and most parts are known to work with Python 2.4. Python 3 support is planned.</li>
<li>The output of <code>python --version</code>. We support Python 2.6+, and some parts are known to <ahref="#q-syntax-error-non-ascii">work with Python 2.5 or even 2.4</a>. <ahref="https://github.com/rg3/youtube-dl/issues/180">Python 3 support is planned</a>.</li>
<li>The name and version of your Operating System ("Ubuntu 11.04 x64" or "Windows 7 x64" is usually enough).</li>