@Kai
With your settings from 2:06 AM, A quick test showed the 60- and 24p recorded OK. However, I got a in camera playback error on the 24p which I hadn't gotten previously on about 40-50 clips of your previous 24p / 3 gop settings from the weekend.

I then went and changed 3 settings on your 2:06 AM settings, and that was the 3 overall bit rates on avchd compression in patches for testers. I changed 24 ADD to 60, overall to 60, and overall bitrate2 to 54.

I then went and walked around the back yard on and recorded about 6-7 mins on 4 clips and playback was ok. However, I did get one write error on first clip.

I'm a little confused from your sat settings as I think I was getting around 48mbs. You have 42 as the limit in one place and max 70 in another. Was the 42mbs on purpose on this set.

Have attached info on 1 clip

Does anybody know if their is a way to display or export all the settings in ptools. I'd like to make an excel or word doc of the settings I'm playing with. It's a lot of clicking to check and recheck all the different settings.

@jfro @all

Testers Only:

KAE Extreme 65Mb/s 1080 24P 3 GOP with 42Mb/s 720P 60 GOP 10, 720P 50 GOP 9, 1080i 60 GOP 6, 1080i 50 GOP 3

Been working a few hours on 720p and 1080i settings because some of you have been having trouble in those modes when using the extreme 65M 1080 24p settings. I think I've come up with a fairly stable fix but will need others to test. The 'overall bitrate' settings definitely needed to be added back in and the GOP for the 720p modes needed to be raised to make those modes more stable. Still coming from a 'lower GOP is nicer visually for motion' prejudice, which I know most people disagree with, I raised the GOP settings to 10 for 720P/60 and 9 for 720P/50. The 1080i/60 is still GOP 6 and the 1080i/50 is a 3 GOP as it's tied to the 1080 24P 3 GOP. I've attached the latest settings file with all this in. I'm hoping it will give users who want the extreme 65mill 3 GOP 1080 24p a stable base 42 Mb/s settings in the other 720P, 1080i modes both NTSC and PAL. Be forewarned I am no expert in any of this, especially 720p or 1080i modes. I am simply using an upper limit of 42 mb/s for the other AVCHD modes because I can't seem to make it stable above that - if you can, modify your settings accordingly in those modes.

I have tested the death chart on all those modes for 3 minutes straight with no lockups or write errors. Clips will play back in cam and on desktop. Once I got a 'could not playback clip' error in camera. Turning off the camera and turning it back on allowed it to play the clip back fine. The ever present front 10 frame blockies are in residence with these settings.

Looking forward to you guys trying to break these settings. I have only tested with 32GB Class 10 card.

** Please reformat your cards before doing heavy testing on these.

jfro

"With your settings from 2:06 AM, A quick test showed the 60- and 24p...."

Try the settings above. The confusion arose with tests I did for Vitaliy that indicated the 'overall bitrate and 24H bitrate' settings didn't need to be ticked for 1080 24P to work at higher data rates, unfortunately unticking them broke other modes using lower GOPs. This is remedied (I think) in the above file. On the death chart you will routinely get 64Mb/s in 1080 24P GOP 3, you will get a max of 42 Mb/s in the other modes on the chart. Less detailed footage of course will vary. I think Butt is using some different caps for the bitrate than I am. I'm just trying to find the MAX stable bitrate for 1080 24p with Vitaliy's existing patches.

interested in trying these settings Kae. Have you looked at the 720p60 with B frames at all?

I think it was 720 encoder setting 2? It was in another thread but I don't remember which one right now.

@svart @kae
No, it is "Encoder setting 1 720p: set "3" and you have 720p B-Frames

@Butt
'No, it is "Encoder setting 1 720p: set "3" and you have 720p B-Frames'

Have you tried it and noticed a difference? If so, at what GOP for 720P 60 and 720P 50?

Also, what is the secret for higher data 720P/1080i? If we can do 64Mb/s on 1080 24p we should be able to at least reach those data rates in the other modes, right?

@Shield

Per cbrandin, they are always there, just not as noticeable but still doesn't mean you could effectively use those frames.

Currently rendering some new 24P tests using the latest best stable settings. For anyone who doesnt understand Group of Pictures (GOP) see FCP7 manual link;-

http://documentation.apple.com/en/finalcutpro/usermanual/index.html#chapter=C%26section=12%26tasks=true

and/
Motion-based Adaptive GOP Algorithms for Efficient H.264/AVC Compression

www.atlantis-press.com/php/download_paper.php?id=12


PS:
Shows a quick sample from a longer video using Vitaly's hack/ kae's GOP 3 setd.ini 24p test vs the standard gh2 body firmware. see video info for details. Yes, I know youtube is sh*t, but the tests were completely identical, rendered to 23.97 mpeg2 then uploaded using youtube's h264 implementation. The bitrate 65mb of Vitaly's pays off on quality and kae's settings improve movement although i was moving quicker on the gh2 hack version. left hand is stock, right hand is hack.

@kae:

Thanks for your hard work.

I tested every mode 10 times on death chart. Here are my results with two Transcend Class 10 32GB:

Mode Error(s)

1080i60 3 of 10
720p60 10 of 10
1080p24 0 of 10

with Tele-ex

1080i60 8 of 10
720p60 10 of 10
1080p24 0 of 10

Will Kae's low GOP patch have any impact on jello?

I believe the formatting probably alleviates file fragmentation which slows read/write times and can cause the speed errors.