Even the lowest speed 1x is sufficient to play and record real-time p video; the higher speeds are relevant for general data storage and more sophisticated handling of video. The usable data rate of a Blu-ray Disc drive can be limited by the capacity of the drive's data interface. With a USB 2. Blu-ray drives that are integrated into a computer as opposed to physically separate and connected via a cable typically have a SATA interface.
HD DVD market adoption choice. Blu-ray Disc recordable "Blu-ray Disc recordable" refers to two optical disc formats that can be recorded with an optical disc recorder.
The format was supposed to use the same codecs and program structure as Blu-ray Disc video but recorded onto less expensive 8. With the end of the format war, manufacturers ramped production of Blu-ray Discs and lowered prices to compete with DVDs. On the other hand, the idea of using inexpensive DVD media became popular among individual users.
A lower-capacity version of this format that uses single-layer 4. Both formats are being used by individuals for recording high definition content in Blu-ray format onto recordable DVD media.
It was defined in June The requirements related with computer file system have been specified in System Description Blu-ray Rewritable Disc Format part 2 File System Specifications version 1. One file is created for each Movie PlayList. If used, Stereoscopic Interleaved files shall be placed under this directory. This file is used only when 3D video is played back. If it exists, there shall be only one sound. There is only one index. There is only one MovieObject.
Container format[ edit ] Audio, video, and other streams are multiplexed and stored on Blu-ray Discs in a container format based on the MPEG transport stream. That enables transport streams of digital broadcasts to be recorded as they are broadcast, without altering the format. Although it is quite natural, a function for high-speed and easy-to-use retrieval is built in.
An MPEG transport stream contains one or more MPEG program streams, so this allows multiple video programs to be stored in the same file so they can be played back simultaneously e. Codecs[ edit ] The BD-ROM specification mandates certain codec compatibilities for both hardware decoders players and movie software content.