HDZero features
1. Supports Analog/HDMI In/HDZero
2. Super fixed low latency
It is fixed!
First pixel latency: 3ms vs analog 2ms
Frame latency: 14.1ms (3+1000/90) for Nano 90 Camera
Frame latency: 19.7ms (3+1000/60) for other HDZero 60 fps Camera
Analog Frame latency: 18.7ms (2+1000/60 for NTSC)
4.6ms less latency than analog if Nano90 + HDZero Goggle
3. Analog in
Built-in deinterlacer
Add-on post image processing (Brightness/Saturation/Hue)
Scale to 1280x720p for DVR
4. Expansion module
V1 supports analog receivers only
RapidFire mode 1 (Has some issues on mode 2, working on it). No problem reported on TBS Fusion
V2 will support WIFI + analog receivers.
               Goggles as RTSP video server, live streaming video to VLC on smartphone
               Wireless Linux terminal
               Anything you can thinking of, it is a Linux computer
A known problem that the power supply to the Expansion module can’t shut down separately on current V1 module. It will be fixed on next batch.
5. HDMI input
Support up to 1080p60 or 720p100
Only goggle can take 720p100 as of today
6. HDMI output
7. Built-in DVR and playback
H265 for Analog or HDZero 60fps
H264 for HDZero 90fps
Auto or manual recording mode
Playback is on 50fps currently
8. Audio
Built-in Mic
Line-in Mic (compatible with Apple headphones)
Line-out Speaker (compatible with Apple headphones)
Audio in from AV-in 3.5mm Jack
Audio in from analog receiver installed on Expansion module
Recording audio with selectable audio source
Line out audio when playing back DVR
Line out audio when AV in or expansion module is selected
9. Gyro
integrated BMI270
Head Tracker
Auto shut off OLED by monitoring movement
Other gyro-based application in future
10. ESP32
Built in ESP32 that is connected to main Soc via UART. SDK is provided for flashing ESP32 program and communication with the Soc
Worked with ELRS team to have backpack fully functioned during beta testing stage
User can use ESP32 differently other than ELRS backpack
11. OSD
Built-in OSD for Betaflight, iNAV and AduioPilot
Customizable OSD font loaded from SD card
12. Open source
Completely code synchronization between HDZero software team and Github
Runs on Linux 4.9
Goggle firmware: GitHub - hd-zero/hdzero-goggle
Goggle Tooling: GitHub - hd-zero/hdzero-tooling
13. Misc.
Support diopter lens inserts
Rail for mounting antennas or receiver’s pf other digital video system
1080p90 OLED with combined focus/IPD knob
Recessed front SMA jacks
 
 
Race Bundle = Nano 90 Camera + 80mm MIPI cable +  Race V3 VTX + HDZero FPV Goggle