BZBGEAR BG-4K120CHA USB-C 4K120 Video Capture Box User Manual

: June 12, 2024
: BZBGEAR

Table of Contents

Statement
Safety Precaution
Introduction
Features
Packing List
Specifications
Operation Controls and Functions
Connection Diagram
Video Streaming
YouTube
Troubleshooting
USB Pin Definition
Tech Support
Warranty
Mission Statement
- Copyright
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

BZBGEAR BG-4K120CHA USB-C 4K120 Video Capture Box User Manual

Statement

Please read these instructions carefully before connecting, operating, or configuring this product. Please save this manual for future reference.

Safety Precaution

To prevent damaging this product, avoid heavy pressure, strong vibration, or immersion
during transportation, storage, and installation.
The housing of this product is made of organic materials. Do not expose to any liquid, gas, or solids which may corrode the shell.
Do not expose the product to rain or moisture.
To prevent the risk of electric shock, do not open the case. Installation and maintenance should only be carried out by qualified technicians.
Do not use the product beyond the specified temperature, humidity, or power supply specifications.
This product does not contain parts that can be maintained or repaired by users. Damage caused by dismantling the product without authorization from BZBGEAR is not covered under the warranty policy.
Installation and use of this product must strictly comply with local electrical safety standards.

Introduction

The BG-4K120CHA is a cutting-edge USB-C 4K120 video capture device with a scaler, HDMI 2.1 loopout, audio, and HDR10 to SDR conversion, designed for professional HDMI video signal capturing. It utilizes a USB 3.1 Type-C Gen 1 (USB 3.0) interface for high-speed transmission. Additionally, the HDMI input and loopout can support up to 4K2K 120Hz, enabling users to connect to a 4K2K 120Hz source and capture Ultra HD (4K2K@30)video. The BG-4K120CHA also captures and displays original uncompressed HDMI video, resulting in more realistic color rendition.

Moreover, the BG-4K120CHA incorporates large volume image buffer technology to effectively avoid video tearing, and the high sampling rate and accuracy ensure images withhigh sharpness, rich details, and fewer color edges. Furthermore, with HDR10 to SDR conversion, PS5/Xbox Players can enjoy 4K2K@120 HDR games on a 4K TV while recording real-time 4K2K@30/1080P@120 video streams with SDR quality through USB 3.0 simultaneously.

With its advanced features and high-end capabilities, the BG-4K120CHA is an ideal choice for demanding HDMI video capture applications, offering professional-grade performance and versatility.

PS5 & Xbox Series X also support 1080P120

Features

HDMI video and audio streams over USB 3.1 Type-C Gen 1
UVC1.0/1.1/1.5
Video resolution up to 4K2K@30/1080P@120 (Video stream over USB-C)
HDMI 2.1 compliant
HDMI input & output up to 4K2K 120Hz 4:4:4/4:2:2/4:2:0
HDR 4K2K@60 4:2:0 10 bits/12 bits
HDCP 2.3 and 1.4 compliant
Allows any output to view any HDMI source at any time
Deinterlace & scaling (upscaling supports up to 1080P@120)
Mic-in mix with HDMI audio
HDMI audio extraction
HDR10 to SDR conversion***
Play 4K@120 HDR on HDMI out while streaming 4K2K@30/1080P@120 with SDR colors for gameplay capture.
Volume control knob to adjust the MIC/Headphone volume.
Auto-detection on video format to ensure plug-play operations
Supported operating systems: Windows 7/8.1/10/11, Mac, & Linux OS
Compatible with most 3rd party software such as OBS Studio and AMCap
USB 3.1 Gen 1 (RGB/YUY2/NV12/P010) 4 (capture up to 4K2K@30) and USB 2.0 (YUY2/NV12) (capture up to 1080@15)
Low Latency (3~4ms at 1080P)

Note: Please use the included USB 3.0 cable in the box to protect the device and avoid further compatible issues. Video resolution changes may require users to restart software. Does NOT support HDR10 plus, HLG, and Dolby Vision to SDR conversion.

Packing List

1x BG-4K120CHA
1x 5V power adapter
1x USB 3.0 A to C Cable (host to device)
1x User Manual

Specifications

Model Name	BG-4K120CHA

Technical
Role of usage| Video Capture Device
Input Video bandwidth| Up to FRL 5 (40G)
Output bandwidth(USB-C)| Up to 5 Gbps (USB-C)
Output bandwidth(HDMI)| Up to FRL 5 (40G)
Video support(USB-C)| Up to 4K2K@30/1080P@120
Video support(HDMI)| Up to 4K2K 120Hz 4:4:4/4:2:2/4:2:0
Audio Input| HDMI Embedded Audio & Stereo audio Input
Audio Support| HDMI output up to 7.1ch, TOSLINK up to 5.1ch, Stereo audio up to 2ch
Recording Mode| Software Compression
Recording Video Format| RGB/YUY2/NV12/P010 (USB3.1 Gen 1), YUY2/NV12 (USB2.0)
ESD protection| Human body model — ±15kV [air-gap discharge] & ±8kV [contact discharge]
PCB stack-up| 4-layer board [impedance control — differential 100Ω; single 50Ω]
Firmware update| Feasible via USB-C Port
Input| 1x HDMI+ 1x 3.5mm
Output| 1x USB-C + 1x HDMI + 1x 3.5mm + 1x TOSLINK
HDMI connector| Type A [19-pin female]
USB connector| USB 3.1 Type-C (SuperSpeed USB)
Software compatibility (not complete list)| OBS Studio (Windows, Linux, MAC), AMCap (Windows), Potplayer (Windows)¸ VLC (OS X, Linux), XSplit Broadcaster (Windows), Skype (Windows, OS X), Zoom (Windows), Hangout (Windows), TeamViewer (Windows)
OS Support| Windows 7 /8.1 /10/11, Mac and Linux OS
Mechanical
Housing| Metal enclosure
Dimensions [L x W x H]| Model| 177 x 81 x 22mm [7″ x 3.2″ x 0.9″]
Package| 198 x 137 x 74mm [7.8″ x 5.4″ x 2.9″]
Carton| 420 x 400 x 300mm [1’4″x 1’3″ x 11.8″]
Weight| Model| 165g[5.8 oz]
Package| 445g[1 lbs]
Power supply| Via USB-C
Power consumption| 4.5 Watts [max]
Operation temperature| 0~40°C [32~104°F]
Storage temperature| -20~60°C [-4~140°F]
Relative humidity| 20~90% RH [no condensation]

Operation Controls and Functions

Front and Rear Panel

Front and Rear Panel

No.	Name	Function Description
1	STEREO AUDIO OUT	Audio extracts from HDMI input
2	STEREO AUDIO IN	Connect to an analog stereo audio source
3	S/PDIF OUT	Audio extracts from HDMI input
4	RESET BUTTON	Reset the device
5	LED INDICATOR	USB-C indicator LED[Red] The device is

When the input source is HDCP protected, LED will become red to indicate the content is legally encrypted and can NOT be captured.
If you plug the capture device into the USB 3.0 port on the host, but the LED indicator lights up red, it means that the device is working according to the USB 2.0 specification. There could be an issue with the USB cable or USB Port.

Connection Diagram

Connecting Instruction

Video Streaming

Create a Video Streaming
Users can create video streams on their streaming service platform. The steps below show how to complete video streaming settings from Twitch and YouTube.

Twitch

Browse to the Twitch website (https://www.twitch.tv/) and log in. Next, select “Creator Dashboard” from your account drop-down menu at the top right of the screen
Find “Preferences” in the left menu, and click “Channel”, then you will see “Primary Steam key” on the screen. Copy the “Primary Steam key” and paste it into the “Stream Key” field in the OBS, then click “Start Streaming” in the software. * Please refer to steps 4-6 of the OBS software control program.
Go back to Twitch and select “Channel” from your account drop-down menu.

At this point, you will see the players live stream..

YouTube

Browse to the YouTube website (https://www.youtube.com/) and log in. Next, click “Go live” from the “Create” icon menu at the top right of the screen.

If you are using YouTube for the first time to create a video stream, you need to wait 24 hours to enable the function.
1. Click “Stream” in the left menu, and fill in the relevant information for the live video to create a new stream.
2. You will see the “Stream key” from the “STREAM SETTINGS” below. Copy the “Stream key” and paste it into the “Stream Key” field in the OBS, then click “Start Streaming” in the software.
Please refer to steps 4-6 of the OBS software control program.
1. Next, go back to YouTube, and then wait for 30-60 seconds, the player will display the live preview. At the same time, the “GO LIVE” button at the top right will turn blue, please press this button.
2. The player on YouTube will start live streaming.

Stream and record videos with OBS

OBS is a popular USB capture freeware and has excellent compatibility. Please start with OBS if users are not familiar with USB capture devices.

Download the software
Browse to the download page of the OBS official website (https://obsproject.com/download), then select the suitable computer operating system and start downloading.
Download OBS Studio

Start the software control program
After downloading the software, please open it and follow the below steps to complete the video streaming settings.

First, find the “Scenes” window, click “+” in the lower left corner, and then enter the name of the scene to create a new scene.
Find the “Source” window, click “+” in the lower left corner, and then select “Display Capture” or “Video Capture Device” to create a new source.
Next, you can set display capture properties. If you select “Display Capture” in step 2, you can select the primary monitor or other extended monitor as the display source. If you select “Video Capture Device” in step 2, you can select a USB video device as the display source. After all settings are completed, click “OK”.
Click “Settings” and then select “Stream” to perform streaming settings. Users can choose service providers, including Twitch, YouTube, etc.
Paste the stream key provided by the service provider into the “Stream Key” field, then click “Apply” and “OK” after setting. In addition, users can click “Get Stream Key” at this step to open the service provider website.
Please click “Start Streaming”. At this time, the screen after clicking “Start Streaming” will be displayed in the live video.
On the other hand, users can also click “Start Recording” to record videos with OBS. Besides, you can click “Settings” and then select “Output” to set “Recording Path” and “Recording Format”.

The procedures the manual demonstrates are based on the interface that each website provides at the time when the manual is written. Please note that the above procedures are subject to change due to platform updates.

Troubleshooting

Our USB device has done comprehensive tests before shipment. Most of the incompatibilities we have experienced are not from the USB capture device itself, but from the sophisticated software and hardware combination of PC or laptop. Please follow the following suggestions to see any help.

OBS is a popular USB capture freeware and has excellent compatibility. Please download it and start with OBS if users are not familiar with USB capture devices. https://obsproject.com/download
Due to the complexities of OS and computer hardware, different USB ports on PC or laptop may have different performance or limitations. Please try all USB ports to see if there are any differences.
Please use the USB cable in the box. We do not guarantee the overall performance when the USB capture box works with some other USB cables.
HDMI/SDI cable quality may also play an essential role when capturing. Please be sure that HDMI/SDI cable can do 4K2K@60 HDMI/SDI signal transmission or better. Try different cables when the device is not able to work as expected.
If audio has noise when using the PotPlayer software, please adjust the audio renderer to WaveOut on the software. The setting path is: PotPlayer→ Audio → Audio Output → Audio Renderer → WaveOut
If there are problems such as video flipping or wrong direction when using VLC software, please rotate, flip or transpose the video in the VLC software to correct the video. The setting path is:
Tool → Effects & Filters → Video Effects → Geometry → Transform

USB Pin Definition

P1	P2
VBUS	A4, B4, A9, B9
Dn1	A7
Dp1	A6
GND	A1, B1, A12, B12
SSTxn1	A3
SSTxp1	A2
GND	A1, B1, A12, B12
SSRxn1	B10
SSRxp1	B11

Tech Support

Have technical questions? We may have answered them already!

Please visit BZBGEAR’s support page (bzbgear.com/support) for helpful information and tips regarding our products. Here you will find our Knowledge Base (bzbgear.com/knowledge-base) with detailed tutorials, quick start guides, and step-by-step troubleshooting instructions. Or explore our YouTube channel, BZB TV (youtube.com/c/BZBTVchannel), for help setting up, configuring, and other helpful how-to videos about our gear.

Need more in-depth support? Connect with one of our technical specialists directly:

Phone
1.888.499.9906
Email
support@bzbgear.com
Live Chat
bzbgear.com

Warranty

BZBGEAR Pro AV products and cameras come with a three-year warranty. An extended two-year warranty is available for our cameras upon registration for a total of five years. For complete warranty information, please visit bzbgear.com/warranty.

For questions, please call 1.888.499.9906 or email support@bzbgear.com.

Mission Statement

BZBGEAR is a breakthrough manufacturer of high-quality, innovative audiovisual equipment ranging from AVoIP, professional broadcasting, conferencing, home theater, to live streaming solutions. We pride ourselves on unparalleled customer support and services. Our team offers system design consultation, and highly reviewed technical support for all the products in our catalog. BZBGEAR delivers quality products designed with users in mind.

Copyright

All the contents in this manual and its copyright are owned by BZBGEAR. No one is allowed to imitate, copy, or translate this manual without BZBGEAR’s permission. This manual contains no guarantee, standpoint expression or other implies in any form. Product specification and information in this manual is for reference only and subject to change without notice.

Costumer Support

Address: 830 National Drive #140, Sacramento, CA 95834, USA
Tel: +1(888)499-9906
Email: support@bzbgear.com