Lowest AVC bitrate for Blu-Ray ?

[JonRead]

I am getting a bit frustrated with authoring software as it seems to not let me go below a certain bitrate, in some cases the lowest is 10mb, others I might get down as low as 4mbps. Now, I know people will wonder why I want lower then 4mbps, but I hope to encode SD material on a BD disc, as lots of authoring software allows 720x576 in AVC for Blu Ray. When using AVC I can get very good quality at only 2mb, perfectly fine for SD. Yet I can't seem to find authoring software that will go this low.

So a two fold question, one is what is the lowest bitrate a blu-ray player will play AVC on a BD disc ? Also what are the current crop of BD authoring softwares out there for the average user (nothing complicated) ? I currently know of and use Roxio Ultimate and Nero 9. TMPG Authoring Works looked good until I noticed it doesn't do AVC. Are Media Chance on the case with Blu Ray software by any chace ? I loved their DVD Lab software.

Thanks in advance.

[Dark Shikari]

I don't recall the Blu-ray spec saying anything about a minimum bitrate.

[JonRead]

That is promising then. Thanks.

[shanghai2004]

Have similar experience, but found the minimum AVC video bit rate bit rate depends on the size (bitrate) of the audio file.

Maybe trying low bitrate audio such as AC3 @ 192kbps might help.

Saw almost all commercial Bluray disks are using MPEG-2 for SD material (e.g. extra's). Gives less hope their is a workaround for low rate AVC...

[moviefan]

If I remember correctly, the Transformers Blu-ray contains a 1080p and a 480p version and both versions are encoded to H.264/AVC.