# Ensure correct setup on the MP4 upstream system
<a name="setup-uss-mp4"></a>

An operator at the upstream server must set up the source content on the upstream system. Make sure that the operator sets up as follows:
+ They set up to deliver the correct number of sources:
  + If the MediaLive channel is a standard channel, the operator must set up two file sources. They must make sure that the two files are identical in terms of video resolution and bitrate.
  + If the MediaLive channel is a single-pipeline channel, the operator must set up one file source. 
+ They set up to make the content available at the agreed URLs. These URLs are the URLs that you obtained [earlier in this section](setup-mp4-obtain-info.md), and that you configured into the MP4 input. They correspond to the URLs shown in [the diagram after this procedure](setup-result-mp4.md).