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SJCAM SJ8 Pro MODx custom firmware.

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  • #16
    Hi Nutsey

    I made some measurements of real bitrate in 4K and 1080 (only), with the different value of the "Video Quality" parameter which acts directly on the bitrate
    (logically)!.
    Note: these are minimal mesured bitrates with camera lens obscured. Here is the result for V1.2.8 and for your MOD 1 (V.1.2.7)

    _______________________________________V.1.2.8____ MOD1 V1.2.7

    4K 60FPS - Videop Quality set to ECONOMY..... 51 kBits .......63 kBits
    4K 60FPS - Video Quality set to NORMAL.......... 64 kBits....... 82 kBits
    4K 60 FPS - Video Quality set to FINE ..............105 kBits .....131 kBits

    1080 60FPS - Videop Quality set to ECONOMY 20 kBits .......20.6 kBits
    1080 60FPS - Video Quality set to NORMAL..... 20 kBits....... 20.6 kBits
    1080 60 FPS - Video Quality set to FINE ...........20 kBits ........41 kBits

    CONCLUSION:
    - It seems that SJCAM forgot to increase the bit rate in 1080 resolution for NORMAL and FINE value of the "Video quality" parameter. (I just wrote them about this issue)
    - Hopefully your mod acts on the "FINE" setting ! So, to enjoy the benefits of your MOD in 1080, the video quality must absolutely be set to "FINE", and
    here we get a very good image quality.

    Best regards
    Last edited by steph31fr; 10-27-2018, 07:09 PM.

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    • #17
      MOD2 is here. Check the 1st post for the link.
      Last edited by nutsey; 11-01-2018, 05:17 PM.
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      • #18
        What are the bitrates of MOD2 (based on 1.2.9)?
        What more changes does this MOD have?
        Is it safe to use this MOD?

        Comment


        • nutsey
          nutsey commented
          Editing a comment
          1. Same as MOD1.
          2. Max analogue sensor gain lowered to get less noisy picture.
          3. I have no idea. Hope so.

      • #19
        I know this thread is about SJ8 Pro custom fw, but I would like to ask if there will be any custom firmware for SJ8 Plus to increase its bit rates too.

        Comment


        • nutsey
          nutsey commented
          Editing a comment
          I've successfully unpacked SJ8 Plus firmware and found many interesting stuff in it like bitrates and image processing settings, but no custom firmware release for newer hardware is possible without having a device in hand.

        • massacre
          massacre commented
          Editing a comment
          Good news!

      • #20
        Someone with SJ8 Pro with MOD1 or MOD2 firmware can post raw samples at 4k30 EIS ON and 4k60 ?

        Comment


        • nutsey
          nutsey commented
          Editing a comment
          I'm joining this request. It would be nice to see a 4k60 footage called by some users 'awful noisy image' shot in low light/indoors.

        • steph31fr
          steph31fr commented
          Editing a comment
          As requested, here are two new Raw samples (outside, clowdy weather) for V1.29 MOD2, moving the cam approximatively the same way for both to check the GYRO

          Common parameters for Both:EV=0, White balance=Auto, Color profile=SJCAM Vivid, Sharpness=Standard, Distorsion=Off, Video Quality=Standard, ISOMax6400


          SJ8 PRO V129 Mod2 4K 30FPS GYRO QStandard.mp4
          https://turbobit.net/9iz1lxuco8rg.html

          SJ8 PRO V129 Mod2 4K 60FPS QStandard.mp4
          https://turbobit.net/s595h00bvpx0.html

          and finally, enjoy the auful noisy mode (4K 60FPS): Indoor, one window opened with very cloudy morning wether and just 2 lights in the room.
          SJ8 PRO V129 Mod2 4K 60FPS QStandard INDOOR.MP4
          https://turbobit.net/7222qdverzjf.html


          ​​​​​​​Best regards
          Last edited by steph31fr; Yesterday, 07:38 AM.

      • #21
        Guys. Is anybody here experiencing problems with distortion correction?
        Do you find this site useful and interesting? Please support it by donating here.

        Email me if you have any offers, requests or ideas.

        Comment


        • AussieKev
          AussieKev commented
          Editing a comment
          Don't have SJ8 Pro. Can't help, but if I see anything on other sites I'll link.

      • #22
        Originally posted by nutsey View Post
        Guys. Is anybody here experiencing problems with distortion correction?
        hi
        This is my problem with distortion correction 1080p60.
        "I would like to show you the problem that I have in my camera (1080P 60, FW 1.2.4, 1.2.7, 1.2.9). When the correction is on, there is a large video distortion on the left side of the image (rolling). From up to down."

        https://drive.google.com/open?id=1C3...BK2gMEN-y7Wqs0

        Comment


        • nutsey
          nutsey commented
          Editing a comment
          I can see the same on the right side (maybe slightly less visible).

        • nutsey
          nutsey commented
          Editing a comment
          I can be wrong, but I'd say the lens was changed in final SJ8 Pro version but the distortion profile left unadjusted.

        • dargor
          dargor commented
          Editing a comment
          On the right side there is much less distortion. I reported to sjcam and no reply. Bireate is still very low for 1080p,1080p 120 is only double 60 frames, nothing has changed. I use your mod. thanks.
          Last edited by dargor; 11-10-2018, 02:37 PM.
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