YI 4K+ Action Camera

At CES 2017 in Las Vegas YI Technologies revealed their latest action camera: YI 4K+ Action Camera. YI 4K holds the latest Ambarella H2 SoC processor which allows 60fps at 4K Resolution! It is the first camera to use this new processor, which is capable of a maximum bitrate of 120 Mbps. YI also said that audio was improved with the new camera. It shares the same body size, so all YI 4K Accessories will be compatible with YI 4K+. Here’s a comparison with YI 4K Action Camera & GoPro Hero5 to give you an overview of the newly introduced features.

My first video with YI 4K+ recorded in 4K with 60fps:


YI 4K+ Action Camera vs YI 4K Action Camera vs GoPro Hero5 black

* I’m not sure which sensor is used in GoPro HERO5 black, I assumed it is the same as in YI 4K – Sony IMX377. This teardown from hypoxic states it is the same IMX117 used in Hero4 black. I also heard that different sensors being used.

** I currently don’t know if A/V out via USB-C is possible/available for YI 4K+ or GoPro Hero5 black.

*** I assume RAW photo and voice control being upgraded via firmware on YI 4K Action Camera.

° coupon code: PPIWJXKK



YI 4K+ Action Camera Specs

The camera features a 12,35 MP Sony IMX377 sensor. That’s a 1/2.3″ CMOS image sensor with Exmor R ability, the same one used in YI 4K Action Camera as well as in GoPro Hero5 black.

That’s the major change! The new Ambarella Ambarella H2 chipset with Quad-core ARM®Cortex®-A53 64-bit CPU debuts in YI 4K+ Action Camera. H2 includes 10-bit High Dynamic Range (HDR) video and offers “3D electronic image stabilization”, a better electronic image stabilization now available in 4K with 30fps. YI 4K Action Camera and GoPro Hero5 black hold the older Ambarella A9 processor that limited the frame rate to 30fps  in 4K resolution.

Video Resolution & Frame Rate:
4K – (3840 x 2160) – 60 / 50 / 30 / 25 fps
2.7K – (2704 x 1520) – 60 / 50 / 30 / 25 fps
1440p – (1920 x 1440) – 60 / 50 /  30 / 25 fps
1080p – (1920 x 1080) – 120 / 100 / 60 / 50 / 30 / 25 fps
960p – (1280 x 960) – 120 / 100 / 60 / 50 fps
720p – (1280 x 720) – 240 /200 fps
480p – (848 x 480) – 240 / 200 fps

Although the new chipset offers 4K in 60fps, it can’t do higher frame rates in lower resolutions.

Video Format:
.mp4 format, .h264 codec.
Now a bitrate up to 120Mbps is available!

12 MP resolution, so that’s a bit smaller compared to the 16MP photos of YI 1, due to the smaller sensor.
YI 4K+ is also capable of taking raw photos. I hope a firmware update will also bring raw format to YI 4K.

7 layer optical glass lens with f2.8 aperture; 155° FOV
Focal length: 2.68mm
(same as for YI 4K Action Camera)

YI 4K Action Camera also features a display: 2,19″ diameter, 640 x 360 pixel with 330PPI resolution. GoPro Hero5 touch display is a little smaller (2″) and I think the response of the YI display is way better. Hence GoPro’s display is waterproof.

YI 4K+ 2,19" LCD touch screen

YI 4K+ 2,19″ LCD touch screen


Same battery is used as in YI 4K Action Camera which is a 1400 mAh Li-Ion battery. Battery life is a huge plus for YI! GoPro Hero5 black always ran out first when comparing them. I tested YI 4K vs Hero5 during a 3 weeks trip to Iceland. You can read about my experience in this article.

microSD card support for cards up to 128GB; Class 10 recommended. (U3 recommended for 4K video!)

Connectivity & Ports:
YI 4K Action Camera uses a dual band wifi network (2.4 & 5 GHz) to ensure faster download speeds up to 30Mbps download speed.
The camera features Bluetooth 4.0 for the remote control.
Compared to YI 4K which offers microUSB, YI 4K comes with a USB 3.0 Type C port, which is also used in GoPro Hero5 black.
That allows the use of an external microphone, which was not possible with micro USB.
On the bottom of the camera there’s a door for the battery & microSD card, as well as
a 1/4″ standard photo tripod thread for mounting.

Image Stabilization:

Of course YI 4K+ Action Camera comes with image stabilization, but compared to YI 4K and GoPro Hero5 it is now available up to 4K resolution and 30fps!

Voice Control:
It’s a great feature especially for selfies. No need to connect to a remote or smartphone, just shout take a photo and you are good. Very convenient!

Operating Modes:

YI 4K+ has the same 10 operating modes as YI 4K.

  • Photo – to take pictures.
  • Timer, where you can set a countdown before a photo is taken.
  • Burst, where you can set a a number of photos taken within a timeframe. Max. is 30 pictures within a minute.
  • Video – for video recording.
  • Time-Lapse Video, where a time-lapse is combined into a video file.
  • Slow Motion, where you can do slow motion recording without editing the footage afterwards.
  • Time-Lapse Photo, where individual photos are taken, which you can combine to a time-lapse afterwards.
  • Loop Recording, where short video sequences are recorded and overwritten once the microSD card is full. e.g. to use the camera as dashboard camera.
  • Video + Photo, where there are photos taken in a set interval while a video is recorded. Note: video resolution and frame rate are limited to 1080p 60fps max.
  • Live Video (e.g. for Facebook & YouTube Live Streaming)


Dimensions & Weight:
Weight: 96g camera + battery
Dimensions: 65 x 42 x 30/21mm, same as YI 4K Action Camera.

YI 4K+ Action Camera - Dimensions

YI 4K+ Action Camera – Dimensions


In standard packaging only USB-C cable and battery are included. All YI 4K Accessories are compatible with YI 4K+!


YI 4K+ – Mic-in

To use YI 4K+ with an external microphone you need the USB-C to 3,5mm adapter from YI. It showed up on their US Store on their website but is currently not available on Amazon or Aliexpress. It is priced 5.99 USD, I’ll let you know when it is available.

YI 4K+ Microphone Adapter (USB-C to 3.5mm)

YI 4K+ Microphone Adapter (USB-C to 3.5mm)


Demo Video

First demo videos from Sami Luo are now online. This one can be viewed in 4K 60fps:



Yi 4K+ is the first action camera to offer 4K resolution at 60fps. YI Technology was trying to catch up with GoPro, now they set the new benchmark!

60fps in 4K resolution are great, but maybe not suitable for most users as you need a fast computer to process it. (Needless to say editing 4K 60fps on a smartphone will be an overkill). If you are already shooting in 4K the new camera will not only get you a slow motion option, but also image stabilization in 4K. RAW photo is enhancing the photo capabilities of YI 4K Action Camera.

There are more features I’m also excited about – USB-C for example. Many users were asking for external microphone support, which was not possible with a microUSB port, but is with USB-C. At first I thought Voice Control is a nice gimmick when I got Hero5. But it turns out it is great for selfies: No more problems with a remote controller, setting to timer or connecting with your smartphone. Just shout “take a photo” and the camera does.

Why wasn’t 4K 60fps implemented in the new GoPro Hero5 black, which was released only 2 month ago? So many users were disappointed about the lack of improved technology. Maybe the H2 processor wasn’t available back then and GoPro wanted to launch a new camera before Christmas. That would be another setback for GoPro after they had to recall Karma drone. They can either upgrade GoPro Hero5, but then would disappoint all their users who recently upgraded or watch their competition to offer better specs. The current YI 4K and GoPro Hero5 black share the same Ambarella A9 chip.


Retailer / Price Comparison


Geekbuying now shows a price of 299 USD, which seems really great. 100 USD more than YI 4K for 4K in 60fps, EIS in 4K at 30fps and USB-C with mic-in option. Seems to be worth the upgrade (if needed). And still 100 USD cheaper than Hero5 black!

YI 4K+





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Photo credits cnet.com
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