@kron Yeah, I tried a higher bitrate this morning and it still had the same problem. I'm currently using a set similar to the one you posted on the maximum image quality thread but I've set the AQ to 1. GOP is still 12. I did also double the frame buffers, and I tripled both the 24H and 24L top/bottom settings. 24H is at 66MB and 24L is at 48MB, both are recording well without the cadence problem so far, well not on the test shots I was using that normally did. Also I have FSH at 32MB so I doubled the other top/bottom, but I havent tested that setting yet.

I also set parameters that we would set with the previous ptool which we probably don't need to now such as 24H ADD to 66000000 and the video buffers to 2800000 and 3600000 respectively. Anyway, yes, I'm really happy with what I'm getting here (especially the look of motion) but will take the camera out soon to give it a proper run.

cool, okay, will uncheck and redo. Thanks.

What's the current understanding regarding the parameters "Video Buffer" and "Video Buffer 24p" in AVCHD Research?

There's a note attached to these parameters stating "This value must be increased if you increase the bitrate using other patches. 2X increase in bitrate must result in 2X increase in buffer size."

In order to address some of the other strange behavior in 3.62 I tried setting these as per the instructions. However, following this advice resulted in instant crashes of the camera with flashing LCD as soon as recording begins. No files saved at all.

Do these parameters matter?

In general, where is there an up-to-date description of what the ptool parameters actually do? The ptool hints are generally very terse and sometimes very obscure. For example, what is the relationship between buffer 1080 FB1 and FB2? What does buffer 1080 SB have to do with either of them?

Without some broader understanding of the context I feel like I am just shooting in the dark when I change any of these parameters.

Thanks, Vitaly, you're right - I had Video Buffer set to maximum, becuase of the 3x bitrate I was testing. Setting Video Buffers to 1/2 maximum was better, but still locked up camera in some modes.

I was exploring tester's section because Frame Buffer size (1080p24 FB1, FB2, etc.) seems to be an important setting. Does ptool 3.62 also set these automatically?

hi Vitaly,
I have read most of the topic about GH2 Hack, and i didn't understand if there is a meaning for me to hope and wait for 1080p 25fps shooting with GH2 (I really need 25) ? Thanks.

This must be a bug. I enabled the Microphone AGC 0 setting at its default value. Remote trigger doesn't work anymore.

@cosimo bullo
>We are in fact seeing a very dramatic difference but only in shadows and with a LOT of motion. The difference is huge though in terms of grading. Not wanting a war here or anything, just want to clarify that we really DO see a difference. <<br />
I think that's wishful thinking or a kind of self-fulfilling prophecy

other parameters could influence the BQ,
increasing the bit rate will only bring greater Files

"What is a good way to think about managing multiple version of the firmware?"

Ideally this could be managed within the firmware itself (i.e., automatically or with menu options). In the meantime, perhaps you could use separate SD cards?

SD1: stock
SD2: 24fps low motion
SD3: 24fps high motion
SD4: etc...

it will work - I have gone back to previous firmwares several times. I think ptool's trick is to tell the camera its firmware version is higher than the current version, but the firmware the cam actually writes has the same version number as the original firmware.

@vitaly or @cbrandin

short question about Frame Buffer size settings.
There are two settings for 24p under patches for testers / frame buffer size.
Is the first referring to 24H and the second to 24L?

>Is the first referring to 24H and the second to 24L?

Nope.

@towi my understanding is this effects the upper limits of total frame sizes. So its basically allowing for larger I frames etc much like the top/bottom settings do. That is if you have the bitrate set to use them fully, and the scene you're shooting is going to crank it up to those higher levels, and/or your AQ setting is going to push it up there. Soo.. having a larger framebuffer limit isn't going to negatively impact on your 24L settings, because it isn't going to get to those levels you've set for 24H anyway, but it's going to get to maximum frame size anyhow cos there is room for it. If anyone knows better please correct me here.