@LPowell Scary ... even if i have to sacrifice Time lapse thing :((

I used above @mickos tweaked Quantum 100 ... It worked out to be fine. @LPowell @driftwood I just wanted to ask if changing settings of MPEG Mode on Quantum 100 is safe? Are MPEG and AVCHD streams are separate? And i don't intend to use 1080i. Even if the things are grey i don't want to take risk rather i will look for separate timelapse patch.

@LPowell Great ... @duratix I will try your MJPEG settings soon

@Ralph_B I was experimenting with using B-frames in 720p60 mode at the time. Although I'm not 100% sure that was what caused the near-fatal incident, I've since abandoned that approach for other reasons. I'd advise anyone to proceed with caution when making changes to GOP structure.

One last modular question: 720p settings are independent from 1080i/p or are there any shared ones that you know about? Thanks again.

@duartix Beware, 720p is intricately entangled with 1080i settings. Beyond here lie dragons.

Thanks @LPowell. I'm getting the point...

@mickos:

Have you seen this? http://www.personal-view.com/talks/discussion/2111/gh2-mjpeg-resolution-findings-and-myth-busting/p1

BTW, as you said, there is no point in maintaining the same quantization/tables when recording length is the other main objective beyond IQ. A better balance is in order.

@Ralph_B Toying with the encoder settings is most probable. It shouldnt brick it, just go bonkers/green, etc... if you put an unworkable value in encoder. The encoders are still fairly mysterious. No one absolutely knows what they do, but Ive done many different tests using an array of different values. Take a look at the defaults, spot trends. For example;-

We do know that encoder Settings 1 effect frame types and stability ie 720p encoder1 = 3 gives B frames, encoder setting 1080p/i set to 2 or 1 I found gives i frames only in GOP1 - ie no 2nd frame p slice).

In the past some people suggested they could be related to the default factory scaling factors for quantisation tables (Emul on July 27 2011) and that a factor of 3 could be being used throughout(3×17=51 for example). Another interesting trend to spot is that all the 1080i settings seem to be an 'addition' setting of 720p + 1080p [e.g. 720p Setting 4 (9) + 1080p Setting 4 (8) = Setting 4 1080i(17)] and that changes effecting one set may have to be carried through using this 'additional' factor. Settings 1 could purport to i frames, setting 2 to P frames, setting 3 could be for B frames, and setting 4 some kind of fallback/ initialiser. Equally setting 1- 4 could relate to the Quantiser Scalers/ related to Panasonic's own alogorithms for Quantisation.

I have experimented with different settings in some of the Quantum BETA patches and seen that lowering or enlarging these encoder settings is possible without destabilising the camera by using this additional factor. Whether or not this improves Q or is necessary for stable higher bitrates or to help widen other parameters remains to be proven. So, if things get stabilised by adjusting any of these settings we still don't know why and what they are doing.

@Alexauwa : Where else? http://www.personal-view.com/talks/discussion/953/gh2-patch-vault-most-popular-patches-in-one-place#Item_27