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Profiles
The BD-ROM specification defines four profiles of Blu-ray Disc players. All video-based profiles are required to have a full implementation of
BD-J.
Profile 1 (Grace Period Profile) -informally known as "Profile 1.0"- is the basic profile that all current Blu-ray Disc players (as of September 2007) are based on. Players based on this profile are only required to have 64
KB of persistent memory, which is typically used for bookmarks and other preference storage.[
citation needed] After
October 31,
2007, this profile will be superseded by Profile 1 (Final Standard Profile) as the minimum profile for new players.
Profile 1 (Final Standard Profile) (mandatory November 2007)-unofficially referred to as "Profile 1.1"- adds a secondary video decoder (typically used for picture in picture), secondary audio (typically used for interactive audio and commentary) and the capability of supporting a minimum of 256
MB of persistent memory (for storing audio/video and title updates) through either built in memory or with user provided memory such as a memory card or a USB flash drive. Compliance with this profile will be mandatory for player models introduced to the market after
October 31,
2007,
[1] but existing products will be unaffected. As of
September 2007, only the Denon DVD-3800BDCI (MSRP $1999.99) and DVD-2500BTCI have been announced as supporting this feature, but they have been delayed until early 2008.
[2] The Samsung BD-UP5000 dual format player (MSRP $1049)
[3] will be 1.1 compatible when it is released on its delayed December release date as it is past the profile 1.0 deadline.
[4]
Some profile 1.0 players may be upgradeable via firmware update to profile 1.1 if they have the appropriate hardware, but so far, the only such upgrade announced is for the Sony Playstation 3[
citation needed]. When software authored with interactive features dependent on Profile 1.1 hardware capabilities are played on profile 1.0 players some features may not be available or may offer limited capability. Profile 1.0 players will still be able to play the main feature of the disc, however.[
citation needed]
Profile 2 (BD-Live), also known as "Profile 2.0" or just BD-Live, adds network connectivity to the list of mandatory functions and increases persistent memory capability requirement. The player must be able to support at least 1
GB of persistent memory, this can be done with either built in memory or with user provided memory such as a memory card or a USB flash drive. So far one manufacturer, Daewoo, has announced a player with this profile, the Daewoo DBP-1000, no release date has been given.
[5]
Profile 3 (audio only) is meant for an audio-only player and does not require video decoding or
BD-J.
