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Official GH2 "Stalin" hack development topic
  • 939 Replies sorted by
  • Vitaliy_KiselevVitaliy_Kiselev

    Guys, please use other topic for this discussion.

  • JspatzJspatz

    You can also recover range in premiere pro by setting the sequence to Maximum bit depth and render quality. After you do that, open a reference monitor, add a proc amp and bring down the gain. You will reduce clipping some but I am not sure if your technique may be recovering mor.

  • balazerbalazer

    @Rafa, that's a really interesting discovery. Did you verify that the 100% level of the the camera recordings actually corresponds to the 100% level of the HDMI recordings, and that the HDMI recordings contain superwhite information that was clipped in the camera recordings? Or is it simply a difference in color mapping, i.e. that 100% in the camera recordings corresponds to 110% on the HDMI output? (or maybe the Nano is remapping colors)

  • RafaRafa

    @kanintesova, In any NLE with a Waveform you will see that the highlights get abruptly cut at 100%. Yesterday I recorded the HDMI on my NANO and compared with the same pictures recorded in camera. The in-camera clips where clipped at 100% while the NANO clips clipped at 110%. There are tons of detail waisted here. I'll rather work with a good codec keeping those highlights than with a super codec losing the highlights. Even if you need to make your clips Broadcast Safe (100%) you can keep a lot of that detail by color correction.

  • kanintesovakanintesova

    how did you test this @Rafa? can be interesting

  • RafaRafa

    @zigizigi, If I would be able to tweak the firmware that would be my top priority. The HDMI out allows SuperWhytes. Tested on my NANO.

  • AthirilAthiril

    Would like to store encoder hacks on camera.

    IE: Store the variables on camera, and be able to change within camera, instead of changing firmware a lot. Since it's just a few variables, you should have memory to do that right?

    Or even storing multiple profiles on the cam, to quickly change between them, or even a function for reading said profiles from the ini files, if we keep them on the sd card.

  • cyfernoacyfernoa

    This does sound like something that should be feasible with a firmware hack. I often get annoyed by this feature as well. If it can be done it would be a nice thing to have in one of the next versions of ptool.

  • MeierhansMeierhans

    "Is there any possible way to disable it, or is there a hack that does not have this "feature"."

    Not that I know. In the beginning I was also always wondering.. like: How could it be that I pressed stop that early?? Then I finally red the manual. But once you know it you get used to it. Just count to 3 in the moment when you want to press stop before you do it. If you wanted to start recording right away.. well.. just don´t stop. ;) Maybe this could be fixed, but I believe it will be very low priority.

  • GH2_HoodGH2_Hood

    Is there any possible way to disable it, or is there a hack that does not have this "feature". It is very frustrating for me.

    I often stop and then start recording again right away, and this makes it very frustrating. I've had some great shots ruined because of it. I can deal with shaking.

  • MeierhansMeierhans

    Its a feature.. not a bug. To prevent the shaking when reaching the knob. Its only 1 sec i believe, but quite disturbing if you are used to save tape..

  • GH2_HoodGH2_Hood

    Has anyone had problems with video cutting out early? I'm out filming some snowboarding at Northstar in Tahoe, and all of my clips have been cutting out what seems like 2-3 seconds before I had hit the record stop button while filming.

  • zigizigizigizigi

    Has anyone mentioned the GH2's problem of hard-clipping whites at 100 IRE as opposed to AF100/GH1 that do record superwhites? Is it possible to make GH2's codec recognize superwhites via hack?

  • WhiteRabbitWhiteRabbit
    @driftwood

    Teaser for a friend's channel, shot with Quantum v6 Beta (excluding onboard cam). 720p50 at 1/100. Thanks for another great patch!

  • sporkisporki
    Hi, first of all, great work what you've done with the hack development. Are there any plans to add a focus peaking feature for the gh2 in future? for me, it is the most desired feature i miss at the gh2 because i often use old manual lenses.

    cheers, sporki
  • paglezpaglez
    @vitaliy
    By the way, any date for new ptool release?

  • B3GuyB3Guy
    @Vitaliy_Kiselev

    Of course, I realize that some new code is necessary for hack to work.

    I was assuming that essentially, you keep this to a minimum, so doing things like @shian is suggesting is VERY unlikely, as it requires truly some extensive new code. Like you say, certainly lots of changed code, but anyway.
  • Vitaliy_KiselevVitaliy_Kiselev
    @B3Guy

    In fact, for quite long PTool not onyl change simple parameters.
    Some patches look simple but have bunch of code and related changed inside.
    And yes, we have parts of code written from scratch. They are small, but anyway.
  • B3GuyB3Guy
    @Athiril Mr.V. creates PTools, which his a computer program which enables us to change paramaters/values in the original firmware and load this into the camera. He does not write "new code". @Brian_Siano Mr.V. had suggested this same method for achieving HDR before MagicLantern announced its availability. If there's a way he can do it, I'm sure he'll figure it out. Right now, he has made no guarantee that he will be able to do this on the GH2.
  • AthirilAthiril
    @Vitaly_Kiselev

    Can you actually write entirely new code/functions in the firmware? Or do you need to keep that consistent size?
  • PixCanFlyPixCanFly
    @Brian_Siano

    there's a thread here on ML
    http://personal-view.com/talks/discussion/1800/magic-lantern-hdr-video#Item_33
  • Brian_SianoBrian_Siano
    If this is where we suggest features for the Stalin hack, here's one. It's an interesting feature on the Magic Lantern hack for Canons, a method for doing high-dynamic range video. It relies a lot on post-processing, but it requires that the camera capture alternate frames at a different ISO setting.

    A video illustrating the process can be found at
  • shianshian
    I'd like to see a way to map the highlight clip function to a button so it can be toggled on and off quickly.

    Also it would be nice to have a look vs raw function similar to the RED cams where you record everything with one setting but can preview what it would look like with certain settings applied without having to scroll through the looks menu.

    And a false color mode would be awesome

    I realize none of these may be possible, but if they are I'd love to see them on this camera.
  • Vitaliy_KiselevVitaliy_Kiselev
    @beavis

    We have topic about this :-) This is in plans, but not easy.

    I am working on v1.1 firmware, looking at encoder changes and preparing stuff for porting.
    It seems that changes are present, but not drastic, just small ones.
  • beavisbeavis
    Is there a possibility to influence i-dynamic tool to bring contrast curve closer to linear RAW? I believe, that i-dynamic works as a step between RAW data from sensor and final frame image, as a part of image processing, not "postproduction". If those 8-bits of colors stays flat around midtones, it might work as light RAW for postproduction with wide flexibility of dynamic range... According to my quick tests, i-dynamic works, the contrast in shadows is flatter, substituting higher ISO with highlights loss. Test frame grabs settings: auto ISO, auto WB, 1080 24p mpgxsvcd_42M_GOP12_AQ4 patch, limited video ISO
    idynamic.jpg
    1476 x 1612 - 693K
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