Hey I’m having the same/similar issue here and wondered if anyone could help.
I have 3 SD cards.
Sandisk Class 4 SDHC 4GB
Sandisk Extreme Class 10 SDHC 16GB 45MB/s
Transcend Class 10 SDHC 32GB
I recorded a 15s clip (of the same thing) onto each card using the Cinema 24p profile on my GH2.
I logged and transferred each one into FCP 7 and exported separately from the timeline.
In Quicktime they all have a data rate of ~ 115-119Mbit/s. Which is around 14MB/s for each if I’m not wrong.
Isn’t the Cinema 24p mode meant to be ~24MB/s??
Thanks, George