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copied!<p>There are many things which might cause your code to fail for you:</p> <ul> <li><p>Not all <a href="http://en.wikipedia.org/wiki/Motion_JPEG" rel="nofollow">MJPEG</a> streams are encoded in the MIME-like fashion your tutorial suggests.<br> Quoting <a href="http://en.wikipedia.org/wiki/Motion_JPEG#Disadvantages" rel="nofollow">Wikipedia</a>:</p> <blockquote> <p>[…] there is no document that defines a single exact format that is universally recognized as a complete specification of “Motion JPEG” for use in all contexts.</p> </blockquote> <p>For example, one may use MJPEG as the video codec of an <a href="http://en.wikipedia.org/wiki/Audio_Video_Interleave" rel="nofollow">AVI</a> (i.e. <a href="http://en.wikipedia.org/wiki/Resource_Interchange_File_Format" rel="nofollow">RIFF</a>) file. So make sure your input file is in the format the tutorial describes.</p></li> <li>The text <code>--myboundary</code> is almost certainly a placeholder. In a typical <a href="http://en.wikipedia.org/wiki/MIME#Multipart_messages" rel="nofollow">multipart MIME message</a>, the global MIME header will provide a <code>boundary</code> attribute, indicating what string is <em>actually</em> used to delimit parts. You'll have to prepend <code>--</code> to the string given there.</li> <li>As you are using <code>Reader</code> and <code>Writer</code>, you are operating on characters, not bytes. Depending on your locale, there might not be a 1:1 correspondence between these two, thus breaking the binary format of the data in the process. You should either operate on byte streams, or explicitely use some character encoding like ISO-8859-1 which <em>does</em> have such a 1:1 correspondence.</li> </ul>

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