For general Z 9 discussion: https://dgrin.com/discussion/268143/nikon-z-9-mirrorless-pro-camera

Video Specific Specifications

1. Movie Metering

   TTL exposure metering using main image sensor

2. Movie Maximum Recording Time

   2 hours 5 minutes

3. Movie File Format

   MOV\
   MP4

4. Movie Video Compression

   Apple ProRes 422 HQ (10 bit), H.265/HEVC (8 bit/10 bit), H.264/AVC (8 bit)

5. Movie Audio Recording Format

   Linear PCM\
   AAC

6. Movie

   8K UHD 7,680×4,320 / 30p (progressive)\
   8K UHD 7,680×4,320 / 25p\
   8K UHD 7,680×4,320 / 24p\
   4K UHD 3,840x2,160 / 60 fps\
   4K UHD 3,840x2,160 / 50 fps\
   4K UHD 3,840x2,160 / 30 fps\
   4K UHD 3,840x2,160 / 25 fps\
   4K UHD 3,840x2,160 / 24 fps\
   Full HD 1,920x1,080 / 120 fps\
   Full HD 1,920x1,080 / 100 fps\
   Full HD 1,920x1,080 / 60 fps\
   Full HD 1,920x1,080 / 50 fps\
   Full HD 1,920x1,080 / 30 fps\
   Full HD 1,920x1,080 / 25 fps\
   Full HD 1,920x1,080 / 24 fps\
   Actual frame rates for 120p, 100p, 60p, 50p, 30p, 25p, and 24p are 119.88, 100, 59.94, 50, 29.97, 25, and 23.976 fps respectively

7. Movie Audio

   Built-in stereo or external microphone with attenuator option; sensitivity can be adjusted

8. Movie ISO

   Mode M: Manual selection (ISO 64 to 25600; choose from step sizes of 1/3 and 1 EV); with additional options available equivalent to approximately 0.3, 0.7, 1, or 2 EV (ISO 102400 equivalent) above ISO 25600\
   Auto ISO sensitivity control (ISO 64 to Hi 2.0) available with selectable upper limit\
   Modes P, S, A: Auto ISO sensitivity control (ISO 64 to Hi 2.0) with selectable upper limit

9. Movie Active D-Lighting

   Can be selected from:\
   Extra High\
   High\
   Normal\
   Low\
   Off

10. Time Code

    Yes

11. Movie Log Gamma Output

    Logarithmic (N-Log) and HDR (HLG) movie output with View Assist (HDMI output only)

12. Movie e-VR

    Yes

13. Movie HDMI Output

    Yes

14. Movie Focus Peaking

    Yes

15. Movie Highlight Display (Zebras)

    Yes

16. Time-Lapse Movie

    Yes

17. AF for Movie

    AF Speed and AF Tracking Sensitivity can be adjusted