How to convert .ts4 videos to .mp4 format.
Converting Recorded Multimedia Files directly to MPEG-4 Videos (.ts4 to .mp4 conversion) should be possible, even though your options are limited.
Try using a video editing software or (online) conversion tool, such as Nero Recode or Nero Video, which should allow users to convert TS4 videos in MP4 format.
A multimedia converting tool for Windows
Video capturing software from Nero Suite