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GH2 Settings for 720p50
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  • 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
  • >>>Try video buffers 30000000 for 720 modes, and 36000000 for 1080p2

    Tomorrow I'll try. What progress has your testing 50p?
  • 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.
  • @Botvinic Also not sure about the muxers... what have you found by changing them?
  • @Botvinic Try video buffers 30000000 for 720 modes, and 36000000 for 1080p24
  • @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
  • 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
  • @Botvinic Im trying to reach stable GOP1 first, then go back to the other settings. :-)
  • @driftwood
    25p 154 Mbps?? But I have 50p 50Mbps :) Well, tomorrow I will check these settings.
  • @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 ;-)
  • @Driftwood, ehi man, you sleep on the GH2, hehehehehe :)
  • @AKED @Botvinic This is probably a false positive, but run this test very quickly for me and check it out. Read the instructions within the settings. ignore the 720p stuff for now and other settings. Test 1080 FSH and see what happens! Make sure you test at 50, 100, 125, 200 shutter, then do other shutter tests. Keep iso down low for now.
    NOTE: this is nowhere near a final setting, Im much further down the line but just want you guys to check this earlier setting.
    UPDATE: Now run another test and uncheck the encoder 720p settings. It appears its all about the video buffer being 3000000 :-)
    Driftwood GOP1 1080p25H test setf.zip
    666B
    GOP 1 25p Native Hack - Frames going up! more tests.png
    1297 x 673 - 87K
  • @ driftwood, sorry, I went to bed right after I wrote my last message.
    Do you still need that test?
  • I've tested many more, but I was not able set more than 34 Mbps. Below Gop24 (Gop12 worked only at 28 Mbps).

    @driftwood
    Please say your current settings, I'll test too:)
  • @AKED dunno if youre up and about but could you test something for me. Can you put Encoder Setting 1 720p = 1 and Encoder Setting 2 720p = 1 (I know it sounds odd) and load the firmware. Record a 1080i FSH recording and tell me if its 25p or 25p in a 50 wrapper. thnks
  • I know. Has that to do with the B-frames?
    And thanks for your testing.
    It is great that there are peopel like you, who know what they are doing when they test and then share their results with the group.
    Thank you.
  • still refining 3 gop 720p50.
  • In the beginning, ther was much talk about the possibility of putting B-frames in the 720 mode.
    As far as I remember it also worked.
    Now in the last weeks there was nothing to read about tis.
    Not important any more?
  • Ha, ha ... this is incredible :)
  • @Botvinic Attempting GOP1 at the moment on 720p50
  • So, I shot with my settings (34 Mbps AQ2 Gop24) for 2 days. Never GH2 did not die in that time.

    @driftwood, your test?
  • I shot the video a little more, and 38 Mbps dies again =(((. I think leaving 34 Mbps. Someone has tested 38 and 36 Mbps?
  • I have had problems in setting 44M (720 34M, Gop24. AQ2) yesterday again, but I've formatted my card on the computer and everything works again.

    After formatting the card 38 Mb are working. But on very complex scenes GH2 dies, such as trees in full screen. I made myself are settings: 38 Mbps - for SH mode, 30 Mbps for the H mode. Gop 24, AQ2

    PS Silicon Power 32 Gb Class 10
    setb.zip
    705B
  • I just get "wrighting limitations due to the memory card"............dam