@spacewig

Underexposing while testing helps me te see better the structure of noise in dark areas. However its subjective.

*** NEW **** GOP6 for testers to play with :-)

Tested on @Stray 's excellent coloured death chart.

Whilst playing around trying to help out with some settings for the GF2 community I thought I'd make them a basic 6 GOP patch which I'd assume would work but cannot test until my GF2 arrives from ebay. However, there's not much between the GH2 and GF2 settings apart from the lack of 1080p patches, and the stock 720p GOP is half of that of the GH2, and the encoder settings 1 to 4 reflect that.

GF2 Users: Anyway here is the GOP6 setting which on GF2 and GH2 will work when the IQ and Q are set to 26. Its not much of an improvement on the stock but it works. Please remember to switch off AQ mode on 1080 GF2 users.

GH2 Users: HOWEVER, the 1080p24 mode for GH2 users on this setting attached is VERY high quality (i frames always around the 1,170,000 bytes mark with a very stable looking GOP that conforms to the reference. On AQ 2 you will resolve a constant Q of around 10, on AQ1 this will remain pretty on the Quantise view of streameye on a constant 16. AQ 3 will probably work resolving around a Q of 7 but I cant be bothered to try it (tired)!

Under normal filming conditions the i frames/p frame/ b frames ratio stays pretty high and you can expect the bitrate to go up and down according to detail, see attached.

This will not crash on any high detail death charts unlike other patches out there.

All it needs now is someone to take these settings and fine tune them as Im too busy working on some new matrix stuff for Quantum X ver 2 and the AVCHD wiki... Anyway, test away!

Nick

@driftwood Nice work and thanks for your hard work, Nick! :-) Although I persist in 3GOP, 6GOP is also considered to be one solution about image quality and motion.

@driftwood OK mate. :-) Although time may be taken, I can do it. I already made 3GOP of HBR, however, frame size was too small and it could not be satisfied. Therefore, I was just going to think whether I will try 6GOP.

Is a Quantum 100 v4 going to happen may I ask?

Oh right, that's great, what improvements can we look forward to it? Will it be the final version?

Or, probably the main question, what is it you seek to do exactly from Quantum 100?

Well, what is the problem with it exactly? even after numerous revisions of 3 versions???

Also overall, quality wise is it faaar superior to GH2's stock bitrates and encodings?

@driftwood

Hi mate, The setting of 60i/6GOP is very difficult for me. :-(

Although the stable setting in my way of 24p was completed immediately, I cannot arrange 60i well...

I will do my best more.

@serginho go to faq at top of site

@driftwood - is 30p in hbr capable of getting somewhere near what youve done in cinema mode ? q9b is amazing from the testing ive done so far...couldnt ask for anything more, compression of HBR in quantum x is quite obvious though, thanks for everything youve done, love that youre pushing things to the limits(nevermind just seen orion came out, testing now!!! i feel cbr is the way to go to keep the grain of the sensor and artifacts more consistant)

@bkmcwd

I've got some decent GOP6 settings running for HBR/25p, that finally appears crash-proof.

Flowmotion was giving way too low bitrates (as with any other patch I tried HBR with), and is not actually stable, it crashes on death charts.

http://www.personal-view.com/talks/discussion/2416/icarus-patch-just-for-hbr-current-0.0.6-60mbps-25p-stable-gop6

Edit: Testing your setting above in 25p. Your patch doesn't pass the death chart on my card in 25p, so it wouldn't pass many outdoor scenes that have crashed on me on HBR when the same patch has managed death charts.

I've been able to run the 176m and 150m patches and Quantum patches in 24H no problem on the same card, so I am keen to see someone try the 64GB SDXC SanDisk on 25p HBR with your patch to see if it crashes for them (a problem with HBR) or stable (a problem with the camera thinking some cards that are more than fast enough is not fast enough in HBR mode somehow).

I'd like to have access to a NTSC GH2 to see if it's limited to 25p (edit: Another user said video out would let me choose NTSC... I thought this -didnt- affect HBR??? In any case, switching to NTSC makes your patch pass the death chart).

In the scene I use to do my initial tests of general rates for indoor usage, where HBR doesn't crash on higher settings, your patch looked pretty good and produces these rates:

edit: Given how my GOP5 was behaving before.. I do think I have an idea how to get 25p up there.

Cheers, I found out what was limiting HBR/25p mode so much.

@Athiril I corrected the wrong input instantly. The second setting is right. Although I think that this can pass death chart, fine tuning may be necessity for 25p.

"limiting HBR/25p mode"

What is this? I do not know the situation of PAL at all.