Official Low GOP topic, series 4

chauncy

720/60 on h setting Nine stream parser results

pattern 8 pframe, 1 iframe pframe mostly about 10% byte rate variation, around 114k i frame same 10% or so variation around 168k

total average 55mb/sec.

Here are the relevant patch settings(0r look in patch vault): Sage January 21 NINE Updated GH2-X v4

Video Bitrate 24H=154000000 Video Bitrate 24L=108000000 Video Bitrate FSH/SH=76500000 Video Bitrate FH/H=50900000 Auto Quantizer for 1080 modes=4 - All to details Auto Quantizer for 720 modes=4 - All to details 720p50 GOP Size=9 720p60 GOP Size=9 1080i50 and 1080p24 GOP Size=1 1080i60 GOP Size=60 Time Value 1=32000000 Time Value 2=18000000 Encoder setting 1 720p=1 Encoder setting 2 720p=1 Encoder setting 3 720p=2 Encoder setting 4 720p=2 Encoder setting 1 1080i/p=1 Encoder setting 2 1080p=1 Encoder setting 3 1080p=2 Encoder setting 4 1080p=2 Encoder setting 2 1080i=2 Encoder setting 3 1080i=4 Encoder setting 4 1080i=4 1080p24 Frame Limit=6080808 60fps Frame Limit=2450000 50fps Frame Limit=2450000 1080p24 High Top Setting=148463 1080p24 High Bottom Setting=103922 1080p24 Low Top Setting=105000 1080p24 Low Bottom Setting=73500 Other Modes Top Setting=76500 Other Modes Bottom Setting=4000

balazer

@mbowen84, I put a lot of effort into making the FAQs relevant and thorough, and EASY for a newbie like you. This topic is not for basic and beginner questions.

itimjim

Indeed you have @balazer and I thank you for one. Some folk just don't understand that you can't come rushing in like a 6 year old asking Daddy "what's this for, what's that for?". Show some respect folks, read, search, read some more,....and then ask a question. And by then, you'll also know the appropriate place for the question.

And I mean no offense by that @mbowen84. Just this place (and other Internet forums) would be bedlam if we don't have some form of etiquette.

ignatius

Exactly. @mbowen84, you're like a child that wonders into the middle of a movie...the world doesn't owe you a living dude. Take your head out of your arse and adhere to protocol...

mbowen84

Ive been shooting with the hack since it first come out, i'm not a newbie by all means, i just haven't been on here in a while because i've been busy shooting my new tv show with my gh2

mbowen84

mbowen84

mbowen84

@ignatius of coarse the world don't owe me anything, i'm not sure how a simple question got you guys so fired up!! i got off my a$$ and off the computer and went & shot something! I suggest you do the same, all the camera picture quality in the world won't make you a better filmmaker!

pinger007

You both make good points, but can we get back on topic please. I hate having to weed through a bunch of childish back n forthin order to find something useful. Come to think of it, a simple yes or no answer at the begining would have kept this forum topic less cluttered... something to think about.

itimjim

@mbowen84 Just lay off the sarcastic replies when someone offers you some help, even if it wasn't exactly what you was looking for. That's what riles people up, especially when you're coming across as petulant and wanting to be spoonfed.

Respect for the work you've done, I like it - a lot - but a shot across the bows like that isn't necessary, or very grown up.

itimjim

Agreed @pinger007. I'm assuming if people don't know the answer to hand, they point folk in the direction of the FAQ/Wiki. That's helping. The option is stay silent and don't suggest the FAQ for fear of reprieve.

Anyway....Quantum 9b......

Butt

@mozes yes I usually use a little color grading in the post (Vegas 10 Pro) - no MagicBullet or others film-modus: neutral -2-2-1-2

oskbtl

Shot these with Sanity... but not happy with my compression quality... its h.254 5k limit every 30 key frames? how are you guys getting such crispy quality ?? help

disastronaut

Such a childish overreaction to a seemingly innocuous question.

JDN

Tested the quantum 9b and sage variant on a shoot today -- very high detail (grains of sand moving underwater while waves move above).

Sage and 9b worked fine at 24p settings on sandisk 95mbps. 720p was mixed bag.

On sage "NINE" setting, 720p60 caused write errors on all panny lenses as well as Nokton 12mm 1.6 almost instantly. Almost no problems on static shots with 50mm FD 1.4. 9b quantum held up a little better with panny lenses and the nokton, but still failed ocassionally. Near universal failure when trying to pan, but better on static shots. Didn't test spanning.

ISO 640 with frame rates from 120 to 1000+ (doing some twixtor tests with the footage). Quality looks excellent on that which did record tho.

driftwood

Quantum X is near completion. Nuff said.

kholi

lolwut

Beast-Like

x_worpig_x

@driftwood Hell Yeah!

Sage

@JDN Nokton is non-electronic, no? I haven't been able to cause failure on my manual glass stopped down. Was it with the up to date version (on dvxuser)?

Note: it *should fail instantly with the Panny lenses, as they have software distortion correction

I am curious if another setting in the camera may be affecting stability due to higher cpu use.

[Deleted User]

@sage @driftwood is quantum v9b 24h not able to work with panny lenses? Please verify

artiswar · Screen shot 2012-01-24 at 10.40.59 PM.png

Screen shot from a little test day. Going to edit some stuff together but I am STUNNED at the amount of detail. The first screen shot is set to "Fit" in Premiere. The second is at 400% the original size. On a 64gb 90Mb/s Sandisk card and a 28mm/f2.3 Lomo prime.

balazer

Do you love the quality of high bit rate intra-frame patch settings, but not the huge file sizes and short recording times? Announcing my experimental patch settings for 1080/24p and Variable Movie Mode, "Cake": inter-frame constant quality at a variable 20-80 Mbps, with SPANNING using SanDisk Extreme HD Video cards. A new approach to GH2 encoder configuration yields consistently high quality in every frame, while using predicted frames for greater efficiency and high bit rates only when the video demands them.

These settings are an improvement over existing long-GOP settings, offering better quality and efficiency. The quality approaches that of some high bit rate intra-frame encoder settings like Aquamotion.

Here are sample bit rates for a static scene shot at different ISO settings:

ISO 200: 23 Mbps

ISO 400: 29 Mbps

ISO 800: 43 Mbps

ISO 1600: 57 Mbps

ISO 3200: 66 Mbps

ISO 6400: 73 Mbps

ISO 12800: 77 Mbps

Use these patch settings in 24H mode. In case of problems, I've set 24L to an untested lower bit rate for use as an emergency back-up. Feel free to tweak the 1080 quantization parameter: lower numbers yield higher quality. But don't go too low, or else the I-frames will bump up against the frame limit and look worse than the P-frames. A frame limit is necessary to allow spanning. These patch settings should work with any Class 10 card, but I haven't tested with other cards.

Please report the results of your testing here. Special thanks to CBrandin and Driftwood, on whose work this is based.

duartix

@balazer: A VBR constant quality approach? What kept you so long???

What particular settings need to be watched out for?

brodieg

@Sage -(nine updated) ive had good results on 720 sh with canon lenses, did a bunch of records up to 30 seconds until i stopped recording because that suited my needs, detailed tree shots with movement

JDN

@sage, yeah, it's the new nokton, 100 percent manual. It was the patch from the patch vault, not the dvxuser, so if that's a bit newer let me know and I can test that.

It may have been what I was shooting -- millions of moving grains of sand plus turbulent water is pretty stressful on the codec. Alternately, it may have had something to do with the shutter speed (it was really high when it started failing as it was for twixtor, and to tell you the truth, I don't think I tested the nokton at a lower shutter speed -- just switched up to 9b as didn't have time to really mess around at the shoot (had only pretested the 50mm and thought since that manual worked all would... but didn't).

Howdy, Stranger!

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