(1). DAT yes yes data stream format, that is, we are very familiar with VCD. Open VCD CD-ROM with a computer can be made to have a MPEGAV directory, which is similar to the MUSIC01.DAT or AVSEQ01.DAT named file. DAT file format is MPG, VCD burning software that will meet the VCD standard MPEG-1 files automatically convert generated.

First of all,. Dat file and. Mpg files are in line with the audio and video compression standards MPEG1 data stream (of course there will be no audio), but the size of their data differ from the sub. . dat file is engraved on the VCD disc data on CD-ROM in order to facilitate data access, so we followed the standard VCD recording, each data packet size of 2324 bytes, which is just one sector of storage space size. VCD disc is composed of one or more tracks. The first track is a small, 2048 bytes / sector data track, there is a iso9660 file system, usually containing Windows VCD player, but there may be other information (such as: image, text, etc.). If you have pictures, mostly songs of the catalog and production company's promotional picture. And after the second track of the backlog of unprocessed 2324 bytes / sector of the MPEG (movie) track, each sector contains an MPEG PS data packets without file system. Usually we see about 600 MB's. Dat files, in fact, it is not a file, which is the so-called ISO channel, is used to enable Windows to handle such a track (Windows simply does not allow programs direct access to the raw device). During playback, CD-ROM drive will be the order of reading for each fan, but to form a continuous MPEG (movie) data streams. Thus, under Linux you can not copy or play these files. The. Mpg file is not prepared to carved VCD disc data. Therefore, packets can be large also can be very small. Often encounter such a situation, the whole. Mpg file is a data packet.