As described above, “IFO” is a DVD Information File which is also the counterpart of VOB or VRO file that contains headers, that tell the DVD players what screen to show at start-up, where each chapter starts, where audio tracks are located on DVD, etc. IFO File works in conjunction with VOB or VRO files, which contain the actual audio and video data. The “Video_TS.ifo” (also known as Video Manager Information file) file contains all the control and playback information for the DVD. The “Video_TS.ifo” file is needed to be present on a DVD-compliant disc.