Vegas Pro 8.0 burns Blu-ray BDMV format to BD-R and BD-RE recordable media.
For the video, you can use MPEG-2 or AVC encoding. The MPEG-2 video templates have an average bitrate of 25Mbps. The AVC video templates have an average bitrate of 15Mbps. For the audio, use Dolby Digital 2.0 or 5.1 (AC-3) encoding at 192Kbps or 448 Kbps respectively. On a 25G single-layer BD recordable disc this gives you approximately 3h42m for AVC or 2h15m for MPEG-2.
You can create your own templates if you need to adjust the bitrates. Also, you can use standard definition MPEG-2 formats for very large amounts of video on a Blu-ray disc. Vegas Pro 8.0 does not currently have the ability to burn BDMV to DVD recordable media.
Sony Creative Software has specifically tested on the following burners*:
Pioneer 101 A
Matsushita BD-MLT SW-5582 (within a VAIO VGC-RC310G desktop)
Matsushita BD-MLT UJ-220S (within a VAIO VGN-FZ190 laptop)
Sony Creative Software has specifically tested on the following players*:
*Other burners and players on the market today may work as well.