A DVD movie usually has two directories - VIDEO_TS and AUDIO_TS. AUDIO_TS is usually empty. And VIDEO_TS folder is a file folder containing all data for a DVD movie. It has three kinds of VIDEO_TS files inside the folder: VIDEO_TS.IFO, VIDEO_TS.BUP, and VIDEO_TS.VOB.

1. Convert VIDEO_TS to MP4
So how to convert VIDEO_TS to MP4? Import VIDEO_TS Folder into a VIDEO_TS converter => Select MP4 as Output Format => Start VIDEO_TS to MP4 Conversion. Similarly, you can convert VIDEO_TS to AVI, VIDEO_TS to MKV, VIDEO_TS to WMV or any other format. Then enjoy this movie for convenient playback on any devices.

2. Play VIDEO_TS Files with VLC
Click "Media" on menu bar => choose "Open Folder...", or press shortcut key "Ctrl+F" to load your VIDEO_TS folder => click "Subtitle" on menu bar to select the subtitle while playing DVD movie if needed.