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Panasonic GH1 firmware research, testing
  • 277 Replies sorted by
  • kolinkokolinko

    this is so cool! I appreciate your work! thanks!

  • yskuntoyskunto

    @humpman the new files for G2 is not working. It is only record 4096 kb before it stops and states that my card is not fast enough.

    I am experimenting on using Lpowel Fast Action 3 GOP and enable min qp=0. It works but somehow it shows "blocky" images for the first second.
  • humpmanhumpman

    @yskunto try these, there is a little differences in encoder's init settings between GH1,GF1 and G2.

    seta.ini
    587B
    user.ini
    2K
  • humpmanhumpman

    @konjow i use this settings, PAL.

    seta.ini
    525B
    user.ini
    2K
  • yskuntoyskunto

    @humpman I try to multiply Constant 393216 by 1 to 10. Only 1, 2, 4, and 8 that enable G2 to start to record. Among those multiplications, only multiplication by 4 that is successfully created an .mts file. It is able to record for 0.72 seconds before reporting that my card is not fast enough and stop recording. I need to unplug the battery to make the camera off. I sent you a link to download the .mts

  • konjowkonjow

    @humpman I will have same time tomorrow and Id like to make final decision for stable GH1 settings. Any suggestion for test 25p? 29may was last stable winner so far

  • humpmanhumpman

    @yskunto Try to multiply Constant 393216 by 2,4,5,10 times. I have GF1 but no G2.

  • yskuntoyskunto

    @humpman G2 won't start to record if I checked "Constant 393216=1179648". If I unchecked this option, G2 start to record but then will stop and report that my card is not fast enough. I use the Sandisk Extreme 45MB/s 32GB. It should be good for high bitrate.

    If I unchecked all the constant (leaving only min qp=0) and lower the bitrate to 44Mbit, then it is stable but won't pass the death chart.
  • yskuntoyskunto

    @humpman Thank you! In the G2 seta.ini, I change "Camera=GF1 v1.22" to "Camera=G2 v1.10" and your "secret" settings are on! I will check the result next week Tuesday and report to you.

    @apefos do you interested to test your custom matrix on GF1 and G2 720p25 and 720p30 mode?
  • humpmanhumpman

    Here is settings for G2 in PAL. Not tested.

    seta.ini
    552B
    user.ini
    2K
  • humpmanhumpman

    @yskunto Here is settings for GF1 in PAL. Tested.

    seta.ini
    552B
    user.ini
    2K
  • apefosapefos

    great achievement!

    the diagonal rain can be solved with the matrix advanced-plus, qp4-51 and gop 10-13-20-26

    see patches below and use them as a base to apply your constant settings and datarates:

    gh1_apefos_advanced-1080_plus-720_qp4-51.zip
    6K
  • humpmanhumpman

    @apefos i did found max bitrate numbers for NTSC, numbers are different but max bitrate is same to PAL, 67 Mbps. Check it. Those "constant" patches fixes speed write error. But there is rain stuff with default matrices.

    setb.ini
    525B
    user.ini
    3K
  • humpmanhumpman

    @apefos just set "min QP" to 0.

  • humpmanhumpman

    @Vitaliy_Kiselev yeah, but that is the way for smart guys, and we used to use hammer for such things.

  • apefosapefos

    It would be great achievement to make the bitrate vary between 24-36Mbps instead of 10-100Mbps. we just need to find a way to avoid the bitrate to get too low. maybe the firmware has a minimum datarate to specify. if some people wants it high so they can make it vary between 36-100Mbps, but the big problem in gh1 is not the maximum datarate, the problem is the minimum because it gets too low automaticaly in low detail scenes and in low light.

  • Vitaliy_KiselevVitaliy_Kiselev

    @humpman

    In GH1 most important thing is to understand encoder logic and adjust or change it. As GH2 encoder is much smarter and GH1 one is utter stupid.

  • humpmanhumpman

    Interesting, that settings above, bitrate variates from about 10-100Mbps depends on scene.

  • humpmanhumpman

    Experimental settings, bitrate can be about 100Mbps, matrices unchecked.

    setb.ini
    775B
    user.ini
    4K
  • humpmanhumpman

    67 Mbps settings, 50i mode tested only, seems stable. High bitrate became avaible due to new constant.

    seta.ini
    778B
    user.ini
    3K
    death_chart.jpg
    1289 x 683 - 272K
  • tinbeotinbeo

    can we apply audio hack of gh2 for gh1?

  • humpmanhumpman

    Don't give up guys : )

  • Vitaliy_KiselevVitaliy_Kiselev

    @apefos

    Don't you have

    http://www.personal-view.com/talks/discussion/13082/gh1-apefos-patches#Item_13 ?

  • apefosapefos

    little lower:

    gh1_apefos_little-lower.zip
    424B
  • konjowkonjow

    1st above: looks good, few motion error on sandisk 45mbs. on 50mbs card all ok but still no spanning:( can we go little lower?

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