Thank you, Viofo, for providing the A129 Plus Duo for review.

Viofo Official Aliexpress product page: A129 Plus Duo

 

Technical Specs:
• Processor: Novatek 96670
• Sensor: Front – Sony STARVIS IMX335 & Rear – Sony STARVIS IMX307
• Lens: Front F1.6 Aperture 140° Wide Viewing Angle & Rear F1.6 Aperture 160° Wide Viewing Angle
• Resolution: front cam only: 2560×1440 60fps & 30fps, 1920×1080 60fps & 30fps ; front & rear cam: 2560×1440 60fps + 1920×1080 30fps, 2560×1440 30fps + 1920×1080 30fps, 1920×1080 60fps + 1920×1080 30fps
• 2″ HD LCD display
• Support up to 256GB microSD card
• Built-in 802.11n 2.4GHz / 802.11ac 5GHz Dual band
• Built-in supercapacitor
• GPS mount
• Bluetooth remote (optional)
• CPL filter (optional)
• Parking mode (requires Viofo HK3 hardwire kit)

 

The box

 

 

Open box

 

 

Content

• A129 Plus
• GPS mount
• Rear cam
• Dual USB car charger
• Long mini USB cable
• Short mini USB cable
• Rear cam cable
• Micro SD card reader
• Cable clips x5
• Spare mount tape
• Pry tool
• User manual

 

 

A129 Plus

 

 

GPS mount

 

 

Rear cam

 

 

Rear cam mount

 

 

Dual USB car charger

 

 

Long mini USB cable

 

 

Short mini USB cable

 

 

Rear cam cable

 

 

Micro SD card reader

 

 

Pry tool

 

 

Cable clips

 

 

Spare mount tape

 

 

User manual

 

 

Initial firmware out of the box & resolution settings for front cam only and dual cam.

Do note that the 2560×1600 resolution will not be available in the retail version as mine is test unit.

 

 

Updated to the latest firmware

The A129 Plus now has separate firmware for the front and rear camera.

 

 

Bitrate settings

There are 3 bitrate settings that you can set on the A129 Plus. Below is the information for H.264 & H.265 encoding for the 3 bitrate settings.

H.264 Low bit rate
Front cam: 2560×1440 60fps – Overall bit rate: 19.1 Mb/s. 136MB per 1min file.
Rear cam: 1920×1080 30fps – Overall bit rate: 17.0 Mb/s. 121MB per 1min file.

H.264 Medium bit rate
Front cam: 2560×1440 60fps – Overall bit rate: 25.3 Mb/s. 181MB per 1min file.
Rear cam: 1920×1080 30fps – Overall bit rate: 19.0 Mb/s. 136MB per 1min file.

H.264 High bitrate
Front cam: 2560×1440 60fps – Overall bit rate: 27.4 Mb/s. 196MB per 1min file.
Rear cam: 1920×1080 30fps – Overall bit rate: 23.2 Mb/s. 166MB per 1min file.

H.265 Low bit rate
Front cam: 2560×1440 60fps – Overall bit rate: 14.9 Mb/s. 106MB per 1min file.
Rear cam recorded in H.264: 1920×1080 30fps – Overall bit rate: 17.0 Mb/s. 121MB per 1min file.

H.265 Medium bit rate
Front cam: 2560×1440 60fps – Overall bit rate: 21.1 Mb/s. 151MB per 1min file.
Rear cam recorded in H.264: 1920×1080 30fps – Overall bit rate: 19.0 Mb/s. 136MB per 1min file.

H.265 High bitrate
Front cam: 2560×1440 60fps – Overall bit rate: 25.3 Mb/s. 181MB per 1min file.
Rear cam recorded in H.264: 1920×1080 30fps – Overall bit rate: 23.2 Mb/s. 166MB per 1min file.

The H.265 encoding is a hidden mode in the A129 Plus Duo. To enable it, stop recording and hold the mic button on the A129 Plus Duo. An SD card icon will appear on the left side of the screen.

 

 

Test setup

I will be using a 128GB Transcend High Endurance microSD 350V card for the recordings.

 

 

Viofo app

 

 

Videos
Below is recorded in:
Front: 2560×1440 60fps with an overall bit rate of 27.4 Mb/s using High bitrate mode, WDR on and without the CPL filter.
Rear: 1920×1080 30fps with an overall bit rate of 23.2 Mb/s using High bitrate mode, WDR on and without the CPL filter.

 

 

Final thoughts
This is not the final retail version of the A129 Plus Duo. So it might have some changes in the final retail version from my unit.

The retail version is on sale now on Viofo Official store in Aliexpress.

This A129 Plus sits in-between the A129 Duo and the A129 Pro Duo 4K. I think the A129 Plus will be great for those looking for something more from the A129’s 1080p and doesn’t require 4K recording of the A129 Pro.

The A129 Plus’ rear camera does its own encoding of the recordings. So you cannot use the rear camera from the A129 Duo or the A129 Pro Duo with the A129 Plus as it is a totally different camera.

According to Viofo Official Store in Aliexpress, there will be 2 versions of the A129 Plus Duo – eMMC and non-eMMC version. Not much info is known about the eMMC version but I think it will have built-in 32GB for recordings just incase the micro SD card fails.


2 Comments

KC · September 6, 2020 at 1:05 am

If using both front and rear camera, the front camera can record at 1440P 60fps?

    Jeremy Wong · September 6, 2020 at 1:11 am

    In both front cam only and dual cams, it can record in 1440p 60fps on the front cam.

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