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RE: Unless you already own Blu-ray discs that you are itching to play...

Posted by Dalton on January 5, 2008 at 12:15:50

In Reply to: Unless you already own Blu-ray discs that you are itching to play... posted by racerguy on January 5, 2008 at 10:50:24:

Thanks for reminding me about the Blu-ray profile issue. Although I have heard about the existence of different profiles, I hadn't explored the issue until you brought it up. Since I am really only interested in playing the movies and maybe watching some of the extra features, it seems that a Profile 1.0 player should be good enough for now. Profile 1.1 only seems to add some interactivity features that I am not interested in. If I understand correctly, all future Blu-ray movie releases must still be able to play on profile 1.0 players.

I found this post by Richard Paul on the AVS forum that seems to explain it clearly (link to full thread at bottom):


Blu-ray player profiles explained in detail

Over the last year I have read much on the issue of Blu-ray player profiles from various insiders and websites and based on what I have read have made this thread about them. There is one Blu-ray spec and in it there are four profiles including an audio only profile that does not require BD-J or video playback since it was made only for audio playback. Leaving out the audio only profile from this thread there are three player profiles made for video playback. After October 31st of 2007 all new Blu-ray players must meet the requirements for at least Bonus View though older Blu-ray players can continue to be sold. Here are the requirements for the three Blu-ray player profiles:

Profile 1.0:

64 KB of built in persistent memory required
no additional persistent memory capability required
no outlining support for text based subtitles required
no SD PiP decoding required
no secondary audio decoding required
no internet capability required

Bonus View:

64 KB of built in persistent memory required
256 MB of persistent memory capability required
outlining support for text based subtitles required
SD PiP decoding required
secondary audio decoding required
no internet capability required

BD-Live:

64 KB of built in persistent memory required
1 GB of persistent memory capability required
outlining support for text based subtitles required
SD PiP decoding required
secondary audio decoding required
internet capability required


Frequently Asked Questions (last updated December 19, 2007)

1. What are the three Blu-ray player profiles called?
In the technical documents the profiles were called Profile 1.0, Profile 1.1, and Profile 2.0. Profile 1.0 was called Grace Period Profile and Initial Standard Profile by the BDA workgroups. Profile 1.1 was called Final Standard Profile by the BDA workgroups and will be marketed as Bonus View. Profile 2.0 was called BD-Live by the BDA workgroups and will be marketed as BD-Live.

2. Why are there three Blu-ray player profiles?
All three player profiles for Blu-ray were originally made back at the time the Blu-ray specs were originally made. At that time it was known that to cost effectively implement certain features such as SD PiP decoding would require the development of new decoding chips that would be capable of dual stream video decoding. The plan was to eventually replace the Profile 1.0 specs with the Bonus View specs by requiring all new players released after a certain date to meet the requirements for Bonus View. The BD-Live specs were to be optional for those who wanted to connect their Blu-ray player to the internet.

3. Is BD-J a requirement for all Blu-ray players?
Yes, all three Blu-ray player profiles require BD-J support and will be capable of normal BD-J interactivity for menus and games. Note though that certain extras might require features that require the player to be Bonus View or BD-Live compliant.

4. Should I wait for Bonus View or BD-Live players?
That depends. Though stand alone Profile 1.0 players will always be capable of playing Blu-ray movies and normal BD-J interactivity most of them will not be capable of certain extras such as SD PiP decoding. If you are interested in those extras than it would be best to wait for stand alone Blu-ray players to be released that support them.

• Blu-ray Profiles Explained.   (Open in New Window)

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