user11824: What's the fastest way to do this? Is there a way I can just copy the file 60 times over without having to re-encode?
It's a WMV file created with Expression Encoder.

user1871: The ffmpeg concat demuxer can do this if the WMV video codec variant can be encoded by ffmpeg. Windows Media Video 7 & 8 qualify, Windows Media Video 9 doesn't.

11824: <p>What's the fastest way to do this? Is there a way I can just copy the file 60 times over without having to re-encode?</p>

<p>It's a WMV file created with Expression Encoder.</p>
 1871: <p>The ffmpeg concat demuxer can do this if the WMV video codec variant can be encoded by ffmpeg. Windows Media Video 7 &amp; 8 qualify, Windows Media Video 9 doesn't.</p>
