To adjust the bit rate, go to the "Debug" menu and click on the
qscale option. It will count down to -16 and then wrap to +16 so
you can try different settings. Note that this also switches the
camera into a fixed bit-rate setting instead of the default VBR.
The cards are rated to 60 MB/s, while the video is only 60 Mb/s.
That factor of 8 should be plenty of overhead, although I have seen
many reports that the cards have far less bandwidth than "rated".
I have just purchased a Lexar 16 GB UDMA 400x card that is supposed
to be good for 60 MB/s as well. My results have been inconsistent
as to the maximum quality value it will support; sometimes -15
works consistently, but othertimes -13 fails.
Are you shooting 24, 25 or 30p? I did a quick test with -8 through
-16 and posted the results on the wiki:
Are my emails going through? I am not receiving anything.