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DVD .ISO
An ISO image (.iso) is an informal term for a disk image of an ISO 9660 file system. Most CD/DVD authoring utilities
can create these kinds of files. In general these behave exactly as a DVD disc would when put into a DVD player.
DVD .VOB and .IFO
A VOB file (DVD-Video Object) is a file type contained in DVD-Video media. It contains the actual Video, Audio,
Subtitle and Menu contents in stream form. The maximum size of VOB files is 1GB and are therefore found in
multiples, in conjunction with .IFO and .BUP files. An .IFO is a DVD information file that stores information about
Chapters, Subtitles and Audio Tracks. In general, when the VIDEO_TS.IFO file is accessed, it will behave exactly
as a DVD disc would when inserted into a DVD player. VOB files can also be accessed directly.
.TS
This stands for Transport Stream and is an MPEG-2 video stream. It is used by some HDTV broadcasters and is
gaining popularity as a high quality High-Definition file format.
* A file extension on a file (such as .avi) does not mean that the data within that file is compatible with the player. Many file formats use similar file extensions, and
it is not necessarily an indication of what the file encoding format is. HD MediaBox supports many types of file format, but due to encoding differences, not all files
may play. † Some high bitrate HD video files may not play smoothly across the network.
1.4.2
A Brief Overview of Audio Formats
HD MediaBox supports a mixture of both compressed and uncompressed audio formats. Recently, as computer
storage costs have greatly reduced, lossless compression has become increasingly popular among those who can
discern the differences.
MP3
MP3 was developed by the Moving Picture Experts Group (MPEG). The name MP3 stands for MPEG 1 Audio Layer
3 (see
section 1.4.1
). It is by far the most commonly used compressed audio format. Like most modern ‘lossy’
audio compression, the MP3 process is modeled on the human hearing range. MP3 tries to reduce file size by first
removing sounds from the frequency extremes.
Common file extensions*
.mp3
Streaming over the 100BASE-T and USB2.0 supported
YES
Common file extensions*
.ts .tp
Streaming over the 100BASE-T and USB2.0 supported
YES
†
Common file extensions*
.vob .ifo
Streaming over the 100BASE-T and USB2.0 supported
YES
Common file extensions*
.iso
Streaming over the 100BASE-T and USB2.0 supported
YES
