I took video with my camera that uses the file extension *.MTS on the video files. VPX will import the videos and show them in the channel strip. However, regardless of where along the strip I place the cursor, the video is not displayed in the source monitor. I hear the audio on playback, but video is not displayed, and I cannot edit the video. I converted the MTS to mp4, but that did not fix the problem. HELP! How do I get the video to display in the source monitor?