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GH2 Cake v2.3: reliability and spanning in 720p, HBR, 24p, and VMM at 2-2.5x stock bit rates
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  • AshunAshun

    @Majlo 24 frames per second isn't going to be smooth. Use HBR or VMM80% to get 30fps, or accept 720p at 50 fps PAL or 60 fps NTSC.

  • MajloMajlo

    Hello, im having quite big problem. Im trying to shoot with GH2, but i cant get nice smooth motion with it. Here is sample of yesterday shooting.

    Any ideas? PLS...i dont want to use just STILL images.

    M.

  • ldbonillaldbonilla

    @smontoto, Certainly.

    Slowed down 720p 60. Just keep your Shutter speed high and your ISO low. If you have to take a dark shot just take it. Smooth -2 everything. I didn't use 2.3 because I thought 2.2 was more stable.

    Cheers

    LD

  • smontotosmontoto

    @ldbonilla That was very cool. Could you explain your settings a little pls. Shutter/framerate and picture style? I know its graded. Plus is there any reason your not using 2.3?

  • ldbonillaldbonilla

    Cake v2.2. Graded. Low quality SD card with stock lens.

  • vstardustvstardust

    Alright, thanks guys.

  • duartixduartix

    @vstardust: Head here: http://www.personal-view.com/talks/discussion/comment/57152#Comment_57152

    All you need is to take steps: 1, 3, 6, 7, 12, 13

    It shouldn't take more than 5 minutes. :)

  • balazerbalazer

    It's time to get out of your comfort zone. :P I'm not going to make custom settings just for you.

    If you want 24p time lapse settings in the Cake style, compare Cake 2.3 timelapser 2 and Cake 2.3, and see all of the changes that I made to HBR 30p mode, and make proportional changes to 24H mode. If you want to use a shutter speed of 1/2 s, set the GOP length to a multiple of 13.

    Another approach would be to take Aquamotion V1, change the GOP length to 13, and copy those settings for 24H mode into Cake.

    Or you can take duartix's Timebuster 2.0, which is meant to be merged with settings like Cake. Duartix has written a lot of documentation.

  • vstardustvstardust

    @duartix and @balazer I'm getting second thoughts using HBR 30p for timelapse since 24p has more motion judder.

    I would like to use Cake 2.3's HBR 30p and 720 60p for regular shooting and timelapser on 24H. I have SanDisk Extreme 30MB/s 16gb cards. I need to shoot about one hour at a time. Filesize efficiency is also important. About 90min/4gb would be nice. Shutter speed 2fps or 2,5fps. Which one suits better?

    I don't feel comfortable doing this myself so I'm asking if you could help me?

  • balazerbalazer

    act, you can change the matrices at your own risk. I don't know what the consequences will be.

    tonalt, it is normal. Please see the FAQs: http://www.personal-view.com/faqs

    DeShonDixon, the benefits are lower compression and improved frame-to-frame consistency.

  • DeShonDixonDeShonDixon

    Whats the benefits of using Cake?

  • dtrdtr

    @act: where can this 'chart from hell' be found?

  • actact

    yes it almost normal at hacked GH2 world.

  • tonalttonalt

    I have been experiencing in camera playback problems with Cake 2.3. Message was something like "Cannot playback file.". When I turn GH2 off and then back on, the playback is fine. Sandisk Extreme 30 MB/s.

    Is this normal?

  • actact

    I think, Cake it's most safe hack for 25HBR and 50p. The Chart From Hell v.2 test works without any freezes and very safe spanning for long time. I would like compare 24H or 24L with famous Driftwood hacks. Is there possible to change matrix type like Sedna or Orion? I preffer 24p. But sometimes I need 25HBR( because second camera is PAL or traditional PAL editing at my area) and camera freezes on fast memory cards at 25HBR or 50p 4-5 times at day. I can't pray all the time it will not happen at important moment - I am events videographer. Go for SAFE!

  • wigginjswigginjs

    Shot with Cake 2.3, 14-140, Smooth (-2,-2,-2,-2), Cowboy Studio shoulder rig, 720p60 slowed down to 30p, edited with Sony Movie Studio 11.

  • balazerbalazer

    Attached is Cake v2.3 with my experimental time lapse settings for HBR 30p (NTSC) mode. These experimental settings just lower the bit rate and improve the efficiency of slow shutter speeds in HBR 30p mode, which allows for longer time lapses and smaller files. 1/2.5 s is the recommended shutter setting.

    Note that the regular Cake v2.3 is already good for doing time lapses in HBR 30p mode, with shutter speeds of 1/2.5 s, 1/5 s, and 1/10 s recommended. You'll get very high quality video this way, because the bit rate stays the same but fewer frames are being coded, which means more bits per frame.

    Cake 2.3 timelapser 2.zip
    957B
  • duartixduartix

    @vstardust You mean you want to timelapse on HBR30, right?

    In order to better do it, there are a lot of questions that need answering:

    • How big is your bigger card?

    • For how long do you need to shoot?

    • What shutter speed do you plan to use?

  • vstardustvstardust

    @balazer Is it possible to have similar Cake + timelapser settings made using Cake 2.3's HBR30 as in this post http://www.personal-view.com/talks/discussion/comment/54223#Comment_54223 ? I don't feel comfortable merging settings myself as my time on computer is very limited and I don't have enough understanding to think it through. Thank you for your work.

  • balazerbalazer

    That's entirely normal. It's just the rate control at work, cycling in and out of fallback mode or between two different quantization levels, so as to keep the bit rate within the limit.

  • 44Mb44Mb

    I'm still getting some odd cadences with v2.3, maybe less frequently. It seems to mostly happen with static scenes and the cadence cycle is longer.

    I don't know if these use the fallback matrice, although I can create elementary stream files, the "Decode Elementary Stream File" command in StreamParser doesn't work for me, it just hang.

    00108_Frames.PNG
    746 x 412 - 166K
    00117_Frames.PNG
    746 x 412 - 164K
  • atibobatibob

    Just an ordinary clip. Cake 2.2

  • fehafeha

    @frerichs , great work ...

  • frerichsfrerichs

    Used Cake 2.3 for an impromptu recording of a friend. Ran several hours with no issues and spanning worked great. Used an AF100 as main and 2 GH2s for side shots.

    No post correction done (Vimeo doesn't do the raw footage justice.)

    For the GH2s, Voigtlander 25mm f/.095 and Panasonic 20mm f/1.7 lenses using 24H, Vibrant -2 -2 -1 -2, ISO 200 and K3200 for white balance.

    The AF100, using Olympus 14-35 f/2.0 lens and a profile to match the GH2s as following (ISO 200, K3200):

    1080/24P Detail Level -4 V Detail Level -1 Detail Corning -4 Chroma Level +2 Chroma Phase -3 Master Ped -5 DRS Off Gama Cine-Like D Matrix Fluo

    Edited with FinalCut Pro7

    Sandisk 95mbps Extreme Cards in all three cameras.

  • SiNERGiSiNERGi

    Mozes can you name at least one?

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