176mb needs a fast card. Out of the few Class 10 cards I have, none are fast enough to record more than a few seconds at a time. This is the highest bitrate I’ve been able to record with the GH2, and it only works at GOP 3. I have no doubt someone in the future will push 200 with the right settings and right card. This setting is not stable. It’s stable enough for a few seconds, or stable while recording with the lens cap on – not really useful in real world situations. Low GOP settings are broken at this point as well with 3.62d, so this is in no way something you’d want to load on your GH2. Oh! In camera Black and White is fairly stable at this setting, probably due to the fact there is no chroma information being recorded and that drops the bitrate way down to the mid 90’s.
Be awesome, play this in the background while watching.