Viofo A139 Pro 4K Dash Cam full review | Safe Drive Solutions

Viofo A139 Pro 4K Dash Cam full review
#dashcam #dashcamera #viofo

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00:00 Introduction
00:21 Dash Cam Options
00:55 Sony STARVIS technology
02:36 Dash Cam Resolution Front
03:15 Dash Cam Resolution front + Rear
04:01 Dash Cam Resolution Front Rear + Interior
05:12 Dash Cam Buttons / Layout
06:49 Bitrate
07:37 Viewing Angle
08:02 License Plate Identification
09:12 High Dynamic Range
09:57 HDR Video Comparison
10:35 G-Sensor
11:17 Wi-Fi Connectivity
11:57 Wi-Fi Speed Test
12:59 SD Card Capacity
13:22 GPS Antenna
13:52 Parking Mode
14:31 Parking Mode Cable/ Low Battery Protection
15:25 Parking Recording Duration
16:18 Loop Recording = Video Length Recording
17:48 File List Organization
19:23 Emergency Recording
20:46 Languages
21:05 LCD Screen (There is no LCD Screen)
21:38 Voice Recording
22:11 Cable Sizes
23:08 Pros + Cons
26:11 A129Pro vs A139Pro vs U1000
29:06 HDR Test A139 Pro
30:33 A139Pro vs GNET G-ON4
34:16 Bens Thoughts ConclusionResolution

Camera layout

A139 Pro
• Front: Sony STARVIS 2 Sensor 8MP 1/1.8 IMX678
Being the first to deploy the newest Sony STARVIS 2 tech, A139 Pro is powerful enough to outbeat most 4K dashcam competitors with immensely upgraded image clarity and accuracy in license capturing.

Sony latest technology STARVIS 2 IMX 678 image sensor, type 1/1.8’’, offers a wider dynamic range in a single exposure than the STARVIS pixel of the same size, bringing much less noise and motion blur during day & night recording.
• Rear: Sony STARVIS Sensor 2MP IMX291
• Interior: Sony STARVIS Sensor 2MP IMX291



Bit rate
1. You can set the bitrate for video. High bitrate may improve the quality and smoothness of the video, especially when recording fast motion or high contrast scenes. Using high bitrate mode may decrease the amount of recording time available on your memory card. Using a low bitrate will save space and record for longer time.

Viewing angle
A139 Pro
Front 140 degree
Rear 170 degree
Interior 170 degree

License Plate identification
When driving with traffic I do find it to be the best out of any other dash cam I have tested on the market for picking up license plates during the day or at night. Which you can see in our example video playing

However picking up license plates to oncoming traffic still suffers motion blur on the license plate. This is still the hardest obstacle for dash cam technology. Hopefully we will see some upgrades to firmware of the unit to dial it in over the next little while. I also have seen when driving through a tunnel when raining. There are far too many reflections for it to consistently pick up license plates.

High Dynamic Range

Viofo A139 Pro HIGH DYNAMIC RANGE HDR enables the camera to deliver video with near-perfect exposure in varying lighting situations. It can enhance video quality, especially when it comes to the issue of the front license plate being overexposed at night.
G-sensor
The G-sensor measures shock forces and locks the video recorded at the time. The settings from “low to high” determine the amount of force needed. Depending on your settings you can set the dash cam up to lock the video file recordings.

There are different settings for parking mode, and while you are driving.

Dual Band Wi-Fi
2GHZ and 5GHZ
WiFi app for android and IOS
Show the options and explain benefits of using 5GHZ

SD Card capacity
Viofo supports up to 256GB
Show where the micro sd card goes in

GPS Built in for both

VIOFO-speed and location data of where video was recorded.
GPS is built into dock

You can also select to turn off GPS speed for both Viofo in case you have a heavy foot.

Parking Mode

A139 Pro
Auto Event Detection-Automatically record when detecting moving objects or impact while car is parked
Time Lapse- Video is recorded at a low frame per second from 1, 2, 3,5, or 10
Low bitrate recording – You can lower resolution to save space while recording


Parking Mode Cable / Low Battery Protection
Viofo – power ground ignition and you must use selector switch on cable to determine low battery protection. Which will be hidden under the dash

Parking Recording Duration:
"On" means the camera will keep recording until the hardwire kits cut the power supply. "1 hour" means the camera will shut down after it gets into parking mode for 1 hour.

Viofo
30 min, 1,2,3,4,6,8,12,24,48 hours


You can also leave this setting off and the unit will shut off as soon as low battery protection hits.

Loop Recording / Video Length Recording
Viofo has flexible options of 1,2,3,5, 10
Recording will begin automatically after powering on with a microSD card in the device. Each recorded file is up to one minutes long, with old footage being replaced when microSD card storage is full.

File List Organization
Viofo