title: Using FFMPEG to join two MTS files together
body: <p>I have two MTS video files, each one 2 minutes long. I need to be able to join the files together and convert the format to MPEG4. I have a suitable command line for converting MTS to MP4 but don't know how to join the files together in the first place.</p>
  
  <p>Some articles on the web suggest using the CAT command, like:</p>
  
  <pre><code>cat video1.mts video2.mts &gt; whole_video.mts
  </code></pre>
  
  <p>However this doesn't work and according to FFMPEG, "whole_video.mts" is only 2 minutes long, not 4 minutes.</p>
  
  <p>Does anyone know how to join the files together? Is FFMPEG the best program to use to do this? Thanks in advance.</p>