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GH2 Settings for 720p50
  • 61 Replies sorted by
  • driftwooddriftwood
    @Ulisse Won't be here much soon. Got a huge filming job on- need these gh2s to perform... :-) Besides, I sleep with one eye shut ;-)
  • BotvinicBotvinic
    @driftwood
    25p 154 Mbps?? But I have 50p 50Mbps :) Well, tomorrow I will check these settings.
  • driftwooddriftwood
    @Botvinic Im trying to reach stable GOP1 first, then go back to the other settings. :-)
  • BotvinicBotvinic
    My card can not write with such speed, GH2 dies in all modes :(
    I can shoot only a table, chair, wall ...

    Report Stream Parser to be the same as yours. Think it native 25p :) But if you insert it into Sony Vegas, then shows the first 3 frames ... and nothing else
  • BotvinicBotvinic
    @driftwood
    Today my friend gave me other options. They can set the bitrate to 50 Mbps and GOP6 or GOP12. And everything seems to be working, but ... if you shoot trees, Stream Parser show jumps (Hard 1). How to fix it? Here is the configuration file, 40 Mbps, Gop12, AQ2.

    I think it all depends on this part:

    ---
    Video Bitrate 24H ADD = 50 million
    Video buffer = 0x2800000
    Video buffer 24p = 0x2800000
    Quantizer for 1080 modes = 17
    Quantizer for 720 modes = 17
    Muxer buffer for 24p = 33,165,824
    Muxer buffer for other modes = 19582912
    1080p24 High Top Setting = 52 209
    1080p24 High Bottom Setting = 40 846
    1080p24 Low Top Setting = 38 589
    1080p24 Low Bottom Setting = 34 900
    Other Modes Top Setting = 49 900
    Other Modes Bottom Setting = 39 100
    ---

    but I do not understand this.
    Normal.jpg
    1280 x 800 - 255K
    Normal 1.jpg
    1297 x 683 - 388K
    Hard.jpg
    1280 x 800 - 378K
    Hard 1.jpg
    1297 x 683 - 385K
    setj.zip
    546B
  • driftwooddriftwood
    @Botvinic Try video buffers 30000000 for 720 modes, and 36000000 for 1080p24
  • driftwooddriftwood
    @Botvinic Also not sure about the muxers... what have you found by changing them?
  • BotvinicBotvinic
    I do not know. These settings gave me my friend and I have not changed anything except the bit rate, GOP and AQ ...

    But if we remove it all, GH2 dies after 2 seconds.
  • BotvinicBotvinic
    >>>Try video buffers 30000000 for 720 modes, and 36000000 for 1080p2

    Tomorrow I'll try. What progress has your testing 50p?
  • driftwooddriftwood
    Finished
  • jackcklamjackcklam
    I have an upcoming project in PAL. I am looking for a stable setting for 720 50p but I can't find any consensus.

    The above discussion is way over my head no matter how hard I try to understand it. I just want a stable setting where stability is priority over IQ. What would you suggest?

    (I will be using SanDisk extreme class 10. And yes, I want to be able to playback the clip in camera)

    Thx
  • BotvinicBotvinic
    @jackcklam
    Read all the messages. There are some stable firmware for 720 50p. Here's my latest setup. Test!

    @driftwood
    Setting the buffers did not help. Has helped GOP24 :((( But now you can set the bitrate to 50Mb.
    setj.zip
    538B
  • driftwooddriftwood
    @Botvinic what do you mean? Youre sending me a setting to adjust?
  • BotvinicBotvinic
    No, this is what I use now. And they work on my card without artifacts at 50p.
  • driftwooddriftwood
    @Botvinic your setj file, is this the same as the 26th sep posting?
  • driftwooddriftwood
    @Botvinic re: your 50M setting. I dont think you need to use Video bitrate 24ADD at all. What made you mess with the muxer buffers? I messed with them but found little difference.
  • BotvinicBotvinic
    I wrote that it is setting my friend. I have not changed them, I do not understand them ... but with them no artifacts!

    September 26 - 50p 40 Mbps, 1080p AQ3
    September 27 - 50p 50 Mbps, 1080p AQ2 (more stability)

    No more differences

    --

    Again, I do not understand you? :)
  • driftwooddriftwood
    I'm not getting atrefacts with my GOP1 stuff!
  • BotvinicBotvinic
    You have SanDisk Extreme? What speed?
  • paglezpaglez
    I have Sandisk Extreme 45 Mbits an I'm not getting artifacts
  • BotvinicBotvinic
    Okay, so I have a bad memory card ...
  • BotvinicBotvinic
    @driftwood
    You can do two firmware?

    1. 720p 50 Mb 24 Gop, AQ2.
    2. 720p 50 Mb 12 Gop, AQ2

    Specially for me. If the first will be with artifacts, then my card was not guilty. My Settings 50Mb Gop 24, AQ2 work fine!
  • driftwooddriftwood
    @Botvinic Ill take a look.
  • PavezerPavezer
    Hey guys, a long time follwer here. First post.
    First of all, I have to say that the work for GH2 hacking is unbelievable. Thank you everyone, especially Vitaly.

    I'm shooting a 25fps project during the weekend and I'm willing to find the best stable hack settings or .ini for 720p50 at the moment. I'm using 16GB trancend class 10 card and have to shoot clips around 20-30 mins duration, audio required.

    OR is there any great 1080i50 settings i should consider?

    I tried to find the best info from the topics, but the amount of posts is sooooo massive that.. I just have to ask. :)

    Thanks a lot in advance!
  • actact
    @botvinic
    Your last posted setting makes variable bitrate. Just now checked it.
    I would like to find similar stable settings but with maximum constant bitrate for sure long recordings on not too fast SDXC card like Transcend 64Gb (25MB/s)
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