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Official Low GOP topic, series 2
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  • @Meierhans
    25p geht nicht, noch nicht - jedenfalls nicht vor dem kommenden offiziellen Pana-Fw-Update.
  • lol thx. how did you know.... let stay on englisch. So how is this ment then? @driftwood clearly said it was 25 p in a 50i container.
  • I asked driftwood about it and he answered that it was a false assumption. So no 25p so far.
  • @Stray
    Thanks!
    Although I also tried the former patch on outdoor today, when the tree was recorded, it stopped occasionally too... :-(

    "We need an AQ1.5"
    I also hope the same! :-)

    I stick the patch made using QP, before I use AQ.
    This setting is not bad, and I think this is compromising and practical.
    However, if stress is applied to the highest, although do not stop, the result of a chart becomes as attached first.
    If only a few weakens stress, as stuck on the 2nd, it will become a very good chart.
    And even if it moves between your test chart, pitch-black darkness, or lowlight, there is no problem as 3rd.

    NOTE:
    Sorry! ignored except 24H.
    154m3gopq12tbx6.6_1.JPG
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    154m3gopq12tbx6.6_2.JPG
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    154m3gopq12tbx6.6_3.JPG
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    seth.zip
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  • Anyone able to record past 3 minutes and 52 seconds with Driftwoods 176 gop 1 patch?
  • @KrisCanonizado, Ich, ehmmm.... i can with Sandisk 45MB/s. card.
  • @krisCanonizado That all depends entirely on each scene, as in the average bitrate, if you're saying it isn't spanning. Which I guess its not.

    @bkmcwd Very cool, it's getting there. It would be easier if we knew what the Initial QP would be for AQ2 at the specific bitrate. I'm stuck doing a load of post work now until the middle of next week, so I won't have much time to test, or try out some ideas. If I get some breaks though I'll definitely be on this and will try some setting changes out for comparison with what you're seeing.
  • Not spanning for me on a transcend 10 32GB (176 GOP patch) but I didn't expect it to? Wait, have I missed something? Is Driftwood's latest spanning on the best cards?
  • @ignatius
    It has everything to do with bitrate at the moment of spanning, low detail, higher chance of spanning.
  • @ignatius
    There's no guarantee that anything over 32Mb/s will span. This has been discussed. As stray mentioned, at these higher bitrates, it depends on how high the bitrate (driven by higher detail and motion) is working at the time of spanning.
    Woops... I just saw sohus already replied. sohus is correct.
  • Cheers sohus, didn't know that. Thought it just stopped at 3.99GB no matter what.
  • Im good with no spanning... I shoot film, so on set my longest shots arent more than 3 mins long
  • @bkmcwd Sorry didn't understand entirely what you were saying when I read your post first time. Nice, congratulations, thats it then I reckon. Its as good as its going to get, and the drop in bitrate is a positive too. I will still try and tweak a tiny bit more out of it if I get time in the next few days.
  • @driftwood 720p60 GOP3 128Mbps? You da man!!!
  • +1

    Had to shoot some tests under flickering fluorescents tonight. 720p60 worked perfect. Thanks again driftwood. Can't wait to try running this through twixtor!
  • Did I miss the latest driftwood 720p60 GOP3 ini file somewhere?
  • ***NEW*** 176M GOP3 Shootout - P Frames versus B Frames using 'GOP1 style' compressor settings. Who wins? You decide!
    1/ First three charts B Frames plus ini
    2/ Second three charts P frames plus ini

    Note: Both settings have been made under exactly the same stability tests and conditions, B frames version required slightly more maxlimiting tuning.

    GOP3ILLA !!!

    GOP3 176M Highest Possible Stable with B frames matching i frames on Death Chart - elecard streameye.png
    1419 x 876 - 1M
    GOP3 176M Highest Possible Stable with B frames matching i frames on Death Chart - streamparser.png
    1298 x 680 - 86K
    GOP3 176M Highest Possible Stable with B frames matching i frames on Death Chart - elecard buffer.png
    1503 x 922 - 123K
    Driftwood 'GOP3illa' Test 1 - GOP3 176M Highest Possible Stable with B frames - setc.zip
    488B
    GOP3 176M Highest Possible Stable with P frames matching i frames on Death Chart - elecard streameye.png
    1395 x 864 - 1M
    GOP3 176M Highest Possible Stable with P frames matching i frames on Death Chart - elecard buffer.png
    1487 x 893 - 105K
    GOP3 176M Highest Possible Stable with P frames matching i frames on Death Chart - streamparser.png
    1298 x 690 - 86K
    Driftwood 'GOP3illa' Test 2 - GOP3 176M Highest Possible Stable with P frames - setb.zip
    494B
  • thisw is for 60 only correct? because I still like my GOP1 in 24...
  • @PerryWilson This probs aint for you :-) Its for the GOP 3 1080p24 fanatics. Having said that, they run GOP1 close! ;-)
  • you're really having fun with this whole naming patches thing! (and I must say, it makes it easier for others to distinguish between patches in discussion.) may I humbly submit some name ideas? 3GOPFATHER, or GOP3FATHER . . .
  • @B3Guy LOL, yeah it makes it easier to remember defo. :-) Ive enjoyed setting these babies up, didnt take long. Ive found a very fast way with elecard to get to stability once the first few tests have completed. :-)
  • kk GOP1ISKING NIGHT!
  • @driftwood With your new GOP3 I would have thought that having B-frames of the same (and in some cases according to that graph greater) size than I-Frames was pointless. What you can get out of a lower GOP is larger I-Frames than GOP1 is capable of, and therefore better image quality within the same bitrate settings. At the moment according to the graphs you've posted bkmcwds current 154M GOP3 is outperforming this 176M GOP3 considerably. However, this could possibly be because @bmcwkd ran tests with the denser colour chart, which is going to push the codec to create larger I-Frames. But I don't think that of itself will make the I-Frames climb the additional 160000 to come to what his 154M GOP3 is achieving. It could also be due to him running the deathchart test at a high ISO and shutter speed. The other thing I'm not sure of is if removing the rogue P-frame forces a lowering of frame size.

    As I showed with a test I ran a few days ago, there is very little difference in terms of image quality between the 176M GOP1 quant me baby and Chris's 66M AQ2 GOP12 (in fact the 66M is slightly better sometimes). I've not compared any of the 176M GOP1s since that one though, but from the graph outputs posted I don't see it being much different. Obviously GOP1 motion is going to look incredibly different to that of a longer GOP though, and maybe the noise would be better too (as in easier to clean). Saying that though, with some small tests I've done, Neat Video and Nukes denoiser seem to clean up the image just as well anyway long GOP or not, but I'd really need to do a lot more tests there. My own subjective view is that GOP3 creates comparable looking motion to the GOP1, not the same but very close. Couple that with greater compression efficiency, and therefore image quality, and it makes more sense to me. But yes, definitely, noise looks a lot better out of the GOP1 before any denoising is done at all.
  • @Stray
    Did you test with 66M AQ3 GOP12 (MAX VAR)? I am interested in your findings.
  • @Stray
    Thanks a lot! :-)
    On the problem of my language, I was always sketchy, sorry!

    BTW,I also stick FLx1 Version for a sense.
    Although this is the patch set to T4=T1, I do not know to put a check into T4.
    I have seldom understood the difference.

    And although it is completely satisfactory at the time of the usual recording, I do not know whether it is that its form of cadence at the time of this highest stress is satisfactory.

    NOTE:
    The camera position is also moving and changing SS and F value with the 3rd chart that recorded many leaves.
    Of course, keeping ISO3200.

    EDIT:
    2nd patch was added.
    This is a setting of the same contents as 1st patch except "T4=T1 UNCHECKED".
    setd.zip
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    154m3gopq12flx1tbx6.6T4_6.JPG
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    sete.zip
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