Official Low GOP topic, series 3

Stray

@bkmcwd yes its the same problem, if the average data rate goes higher than the streams max speed something will be wrong on playback. Record for a minute exactly in camera and then check the time the file plays back for.

vanawesome

Badass! I'm gonna load this up RIGHT NOW.

In the mean time... at the risk of embarrassing myself, here is a youtube vlog I did yesterday using the one before ReAQuanted. QuantMeBaby i believe it was called. I love how well it works with Neat video NR. Which is used on all shots sans the first shot which I forgot to do.

Eh.. alright, since I can't figure out how to embed a video on this forum (face palm, such a n00b) here is the link.

http://www.youtube.com/watch?feature=player_embedded&v=iwUwahA8Hqc

driftwood

*** NEW **** Driftwood INTRA Patch: 'AQuarius' 1080p24 AQ3 with 720p50 AQ3.

50p lookin' good at AQ3 with a few other adjustments. 1080i/50 is a tad improved too under INTRA.

60p at INTRA is a complete NO NO. Therefore, 60p and 1080/60i is left untouched for your own setting.

Note: We can get 1080/60i to INTRA but 720p is then useable - so we left them both unchecked for your own settings.

Ive also dropped 6M off the 176M H setting from the 'reAQuainted' patch which brings the cpb_delay timing in slightly better but with a very weeny drop in bitrate. Please test away :-)

Nick

bkmcwd

@ishvar
Thank you for the great sample! :-)
If I can also take time today, I will also be going to shoot in a park.

No_SuRReNDeR

-delete-

chef

@No_SuRReNDeR

I had to compress it cause I'm not a Plus member yet...

ishvar

@bkmcwd
Did a lot of anamorphic 24p GOP3 shooting today with your latest 88 mb settings!
Was already a big fan of the 66mbs patch you made with GOP3.

Heartfelt thanks for all the efforts you made!

Here's the clip rendered in Vegas 10 @ 20.000 mbs

No_SuRReNDeR

@chef -delete-

chef

@Driftwood

Here's yr reAquanted 176mb/s patch in full effect! using a 14-42mm kit lens and just for one shot, a nikon 50mm f1.8.

bkmcwd

@Stray
It is the affair which became a problem before? ;-)
The frame rate is OK, I think and "actual framerate is" is not desplayed in Streamparser.

I think that frame size is not compressed as long as shooting ordinarily with "24p" since this is Q18.
I will shoot green in a usual park tomorrow.
Although I also made the patches of higher Q value, I think that the balance of this is the best.
If a problem occurs, I am going to raise Q value.

Stray

@bkmcwd The average bit rate on the stress test is breaking the max you've set of 88M by about 20M (avg of 107M), are you sure its frame rate is ok ? I'd love to see a sub 100M GOP3, but I figure Iframes are going to be around the 600,000 mark to keep within the 88M bitrate.

last_SHIFT

@driftwood

Been away from the GH2 for a bit. I was lucky to get an awesome deal on a 2nd hand 5DM2 so have been playing with that. Anyhow, loaded up your 'beautiful buffers' patch and what can I say? I'm totally floored, came such a long way in such a short time. Also took this downtime to improve my color grading skills - this new stuff grades so beautifully. Thanks for the hard work and tireless effort! Damn the 5DM2 looks 'soft' ;-)

bkmcwd

I am making various safe and economical 3GOP settings now, and I stick one of them.
With this patch, in using of EX-TELECON there is no problem.
However, the use in 30p may become sometimes unstable.

As a result of moving a camera to right and left and testing it, it is shown in this screen shot.
If it is a stress of this level, also in 30p, it will be very stable.
However, when a camera was moved up and down continuously in stress test with Stray's chart, recording did not stop, but the frame might fall.

NOTE:
The setting of Chris is borrowed except 24p.

driftwood

I was using a hired AF101 today and had to download this software which was great for the avchd files ;-)
https://eww.pass.panasonic.co.jp/pro-av/support/desk/e/avc_download.htm

smsjr

@Raysito22 I am using Tokina zooms (11-16, 16-50) with the Novoflex. It works fine. Due to the size of those zooms compared to say Nikon AIS primes, I do notice a tiny bit of play but nothing too serious. The primes are rock solid in that mount.

alcomposer

@driftwood,
Already have- but that alone will save me big $ if anything goes funky!

driftwood

Interesting that the AVCHD cam and P2 cameras from Panasonic have a utility that can restore bad stream recordings. search for restore_stream_en.pdf

driftwood

@No_SuRReNDeR There is a driftwood 100M INTRA patch on the 'most popular patches' thread Try 'Aquamotion' - developed for reliable TELE 80% 30fps mode - it still gives great results for the majority of 1080p24 recordings. However if you want top quality with GOP1 then you'll need the higher bitrate 'reAQuainted' version.

RRRR

Ray: I find it pretty smooth to work with gop1 in premiere and my hardware is not as good as yours.
Thankfully one doesn't have to work on long clips though - with some more advanced grading / effects rendering could become a nuisance..

There are much cheaper lenses out there which you could use while saving up for the voigtländer.
Get a konica 40mm 1.8 for 20$ and an adapter for another 20$. For instance. Or, look for some old Nikon glass and adapt it. I'm sure you'll find some gems if you give it a little time, and have plenty of fun shooting. The kit lens is great for what it is, but it's pretty unpersonal.

Striding a bit off topic but since I started from scratch I see now real benefit for myself in trying to adapt new nikon/canon lenses when there's plenty of manual glass that is often equal or better, and a lot, lot cheaper and easier to adapt.

Lens adaptability was the main reason why I got my first m43 camera. Resolution the second.

---

To get back to gop1 testing, I've found that the noise/iso bug really can cause problems when testing. Now I've implemented a procedure to rule it out from the equation, but while starting to shoot it definately interferred with my results. As an additional issue, I've shot most test-shots indoors in poor lighting conditions whilst occasionally having light bleed from a 60hz television.
Not ideal nor representative for what the patch is actually capable of.

Raysito22

Hell yeah. I've been trying Driftwood's 176 GOP1 patch for a week now with awesome resaults. Even with the really bad 14-42, resaults are really great. I guess nobody gets that much horsepower from a kit with NiCanon :P .

Anyway, I've tried under different circumstances. The only bad resault I got was with EX Tele mode, at F22 1/160. ISO was 160, but I got noise banding, which made me say WTF. I'll try more onto that on another shooting.

Otherwise resaults are great, even though my Transcend 16GB isn't really reliable, as expected. I even shot with a desk light, at ISO 1600, and got a really good, unexpected resault. Really cinematic.

I know the lens is not a good lens at all, I'm a Nikon user (photo), used to the likes of 14-24 or 24-70, but as those are non-adaptable except with Novoflex, and even so, not really sure about it, I'm just skipping adapting those. (If anybody can confirm me if Novoflex adapter is compatible with those G lenses, I'd appreciate it, as I've read some lenses need to be addapted to work with it, and right now, my Nikon D3x is still my priority, it feeds me :P .)

I'm now saving for a Voigtlander 25 f0.95 as it stands as the perfect kind of lens for myself. Guess in 2-3 months I'll have it, meanwhile, I'll give a shot to other patches, mainly GOP3.

As for PC performance, yeah, having some stutter here and there. 16GB RAM, i7 2600k and nVidia GTX 580 seem to be tight for raw material playback. I haven't had time enought to work with Premiere, just a few effects to see how much time it took to render, which was fast. It's just recording which slows down.

Thanks to all the users, and of course, VK, Driftwood, bkmcwd, cbrandin, and so on. Keep up the good work.

PS: as soon as I've got a little more vids and time, I'll upload a vid to vimeo. Expect it in a week or 2.

ignatius

@proaudio4

Firstly I'm not a tester, simply don't have time at the moment so I never strongly argue because I often don't have the facts to back it up! I don't think Driftwood's 176 1GOP patches produce more noise than stock firmware and I have never looked at the blue channel after shooting with stock firmware, let alone compared a driftwood hack with stock for exactly the same scene with all things equal. I was just messing recently with reAQuainted and wanted to develop my novice cc skills and see how far I could push the hack with grading in post.

Other factors to consider are of course stuff like the little 'blip' with ISO320. One of my shots that was very noisy was definitely shot at ISO320, but I cant remember if I jumped up from ISO160 or down from ISO400. There's also a possibility that I had iDynamic on, which I understand may cause problems.

I'm sticking with Driftwood 176 GOP1 patches for now (and might also try bkmcwd 176M GOP3) and as soon as I get the time off work I will become a better, more methodical tester.

Cheers

brudney

No_SuRReNDeR, I feel exactly the same. that's why I use driftwoods 132 gop3 aq3 patch. it's very stable, the results are great and I can use pretty much all class 10 cards with it. Plus I don't see any difference between gop1 and gop3, so...

No_SuRReNDeR

------delete----

No_SuRReNDeR

I tried reAQuainted patch and don't get me wrong its great..... I PERSONALLY just don't like the trade off super short clip length and card filling up so dang fast. Plus My 32Gb Extereme pro seems to have a hard time with this high of a BR.... I am curious but is it possible to do a GOP 1 at say...88MB?
That is seriously more than enough bitrate in my opinion and the files would be able to record longer and be more stable, no?....I know there is a 3Gop 88patch out there but I dig the motion in 1 GOP and to me a 1 GOP 88 seems like it would just be MUCH easier to work with.

Thoughts?....

jdough4421

I've purchased a 16GB SanDisk Extreme 30Mb/s card upon the recommendation of some forum members here - and it works perfectly! I have recorded nearly the entire capacity of the card without issues @ 1080p 24p (GOP1 176Mbps patch).

I am blown away by the quality of the footage. Just blown away. I am shooting with these settings:
-1/50th shutter
-minus 2 NR
-minus 2 sharpness
-minus 1 saturation
...with the included Panasonic 14-140mm lens. Very satisfied. Only item I may buy in the future is an ND filter so I can maintain the 1/50th shutter in bright sunlight with a lower f-stop. Right now I have to adjust the f-stop up pretty high in order to make everything not washed out.

Howdy, Stranger!

Categories

Tags in Topic

Top Posters