DIGITNOW! U148 User manual

USB3.0 CAPTURE
HDMI 4K
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U148
User Manual

Thanks for purchasing USB3.0 HDMI Video capture. The following guides
you how to set up. Hope this device will bring you nice digital experience.
With USB3.0 HDMI Video capture , just plug to your
PC(Windows,Mac,Linux) , no need install driver,you can use any 3rd party
software to capture or stream your HD game,or other HD video source.
Features:



Support input max resolution 4K 30Hz;

Support capture max resolution 4K 30Hz;

Support most acquisition software, such as VLC, OBS, Amcap, etc;

Support Windows、Android、Linux and MacOS;

Conform to USB Video and UVC standard;

Conform to USB Audio UAC standard;
No driver is needed, true Plug and Play.
Aluminum alloy housing.
1 - EN

Ports and buttons:
1.
2.
HDMI input port—connect HDMI signal source devices.
USB 3.0 Port—connect to computer with USB3.0 cable.
Application diagrams:
2 - EN
USB
1 2
HDMI IN
Laptop
PC
Game console

Connection and Operation
1. Connect the HDMI signal source to the HDMI input of the video capture
with one HDMI cable.
2. Connect PC USB pat to the USB output of the video capture with one
USB cable.
3. Run OBS Studio, Click “+” icon under “Sources” window, and select
“Video Capture Device”, then select “USB3.0 4K30 Video” in the drop
box next to “Device”:
3 - EN
OBS software download link:https://obsproject.com/

4. At Set Audio Output Mode to “Output desktop audio (Wave Out) ”,
Audio Device to “USB3.0 4K30 Audio ”
5. Set the video latency for make the audio and video synchronized:
Right click “Video Capture Device” then click “Filters”,Click to add “Video
Delay (Async)”,Set it to 470ms (You can adjust it smaller or bigger uttil you
found the audio and video synchronized).
Then you can recording or streaming video:
Work with other applications(e.g. VLC, Media encoder, Protplayer…):
Just run the application then choose capture device to “USB3.0 4K30
Video”.
4 - EN

Work on MAC:
Work with OBS Studio:
Download and install OBS studio, then do the same as above on MAC.
Work with Quick Time Player:
1. Run Quick Time player, select “New Movie Recording”:
2. Choose “USB3.0 4K30 Video” & “ USB3.0 4K30 Audio ” under Camera
and Microphone Option:
5 - EN

Specifications:parameters:
Interface
USB3.0
System
Requirement
W
indows 7,8,10, Mac OS 10.12 or later, Linux,Android 9 or later
Others
USB 3.0 cable,HDMI cable, manual
The computer hardware requirements are as follows
：
Desktop
CPU:Intel Core i5-6XXX or above. NVIDIA GeForce GTX 1060 or above.
R
AM:8G(Dual channels)
LAPTOP
CPU:Intel Core i7-7700HQ or above. Graphics card:NVIDIA GeForce
G
TX 1050 Ti or above. RAM:8G(Dual channels)
The HDMI input resolution corresponding to the USB capture preview resolution under
the USB3.0 interface is as follows:
Note: If there is no picture, please check whether the resolution is corresponding.
HDMI Input
resolution
V
ideo format USB acquisition resolution
3840x2160@
30/25
NV12 30/25Hz 60/50/30/2
5Hz
60/50/30
/25Hz
6
0/50/30
/25Hz
6
0/50/30/
25Hz
YUY2 not support 50/30/25Hz 60/50/30
/25Hz
6
0/50/30
/25Hz
6
0/50/30/
25Hz
XRGB/RGB32 not support not support 30/25Hz
6
0/50/30
/25Hz
6
0/50/30/
25Hz
1920x1080p
60/50
1920x1080i
60/50
1280x720p
60/50
480i
480p
576i
576p
NV12 not support not support
60/50/30
/25Hz
60/50/30
/25Hz
60/50/30/
25Hz
YUY2 not support not support
60/50/30
/25Hz
60/50/30
/25Hz
60/50/30/
25Hz
XRGB/RGB32 not support not support 30/25Hz
6
0/50/30
/
25Hz
6
0/50/30/
2
5Hz
6 - EN
3840 X 2160 2560 X 1440 1920X1080 1280 X 720 640 X 480