File Extension IFO

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File Extension IFO

IFO is a DVD information file which stores information about Chapters, Subtitles and Audio Tracks. It refers to certain points in VOB file where specific video, audio or subtitles stream start.

VOB file is a container format to store DVD-Video media. It is based on MPEG-2 video format with certain limitations. It contains Video, Audio, Subtitle, and Menu information in stream form. You can view VOB files by just renaming their file extension to MPG or MPEG. If you want to burn DVD-R disk you will also need to have IFO and BUP files.

VOB with chapters: DVD authors often divide the content into chapters. The chapters can be individual episodes of a TV show, scenes in a movie, cut scenes, or trailers. By dividing the DVD into chapters, it becomes possible to create the navigation menus and let the viewer jump directly to a desired part of the DVD.

VOB files can contain multiple chapters. These chapters can be seen as chapter points in the VOB file using Digital Media Converter. The software can either extract the chapters (so that each becomes a separate file) or convert the entire VOB file (all the chapters) into a single new file.

VOB without chapters: These VOB files are undivided-they contain only one video stream. It's easy to recognize a chapterless VOB file while you use Digital Media Converter. If the file contains chapters, the software alerts you.

The .BUP files are backup copies of the .IFO files. The .VOB files (for DVD-Video) and .AOB files (for DVD-Audio) are MPEG-2 program streams with additional packets containing navigation and search information.

There are many ways to open file with specific file extension. There could be also multiple applications which you can use to open IFO file. Learn more how to open IFO file. Also you can try using hex or text editors like HexView or Notepad++ to open ifo files.

We hope you found this description of File Extension IFO useful.

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