USB 3.0 CAPTURE HDMI 4K with Loop-through for Image redistribution
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The document outlines the setup and configuration of a USB 3.0 HDMI capture device capable of 4K video resolution with loop-through capabilities for image redistribution. It includes commands and explanations for installing necessary software dependencies, configuring video capture, and encoding video streams using avconv and ffmpeg. Additionally, it details the various video formats supported by the device and provides instructions for ensuring optimal performance in a Linux environment.
![USB 3.0 CAPTURE HDMI 4K with Loop-through for Image redistribution
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# uname -sr; tail -1 /etc/redhat-release
Linux 3.10.0-862.9.1.el7.x86_64
CentOS Linux release 7.4.1708 (Core)
# yum install -y usbutils hwinfo mplayer v4l-utils ffmpeg git
# lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/10p, 5000M
|__ Port 4: Dev 2, If 9, Class=Human Interface Device, Driver=usbhid, 5000M
# lsusb -vv
# hwinfo --usb
# v4l2-ctl --list-devices
USB Capture HDMI 4K+ (usb-0000:00:14.0-4):
/dev/video0
# v4l2-ctl -d /dev/video0 --info
# v4l2-ctl --list-formats-ext -d /dev/video0
Type : Video Capture
Name : YUV 4:2:2 (YUYV)
Size: Discrete 4096x2160
Interval: Discrete 0.017s (60.000 fps)
# wget https://libav.org/releases/libav-12.3.tar.xz
# tar Jxvf ./libav-12.3.tar.xz; cd libav-12.3
# ./configure --disable-yasm; make; make install
# avconv -f video4linux2 -input_format nv12 -s 1920x1080 -i /dev/video0 -qscale 10 out.mpeg
Input #0, video4linux2, from '/dev/video0':
Duration: N/A, start: 1240.062083, bitrate: 1492992 kb/s
nv12, 1920x1080, 1492992 kb/s
60 fps, 1000k tbn
# ffmpeg -f v4l2 -list_formats all -i /dev/video0
[video4linux2,v4l2 @ 0x24114c0] Raw
: yuyv422 : YUV 4:2:2 (YUYV) :
640x360 640x480 720x480 720x576 768x576 800x600
856x480 960x540 1024x576 1024x768 1280x720 1280x800
1280x960 1280x1024 1368x768 1440x900 1600x1200 1680x1050
1920x1080 1920x1200 2048x1080 2560x1440 3840x2160 4096x2160
[video4linux2,v4l2 @ 0x24114c0] Raw
: nv12 : YUV 4:2:0 (NV12) :
640x360 640x480 720x480 720x576 768x576 800x600
856x480 960x540 1024x576 1024x768 1280x720 1280x800
1280x960 1280x1024 1368x768 1440x900 1600x1200 1680x1050
1920x1080 1920x1200 2048x1080 2560x1440 3840x2160 4096x2160
© 2018, Nanjing Magewell Electronics Co., Ltd
SERVERSERVER
HDMI output
SERVER SERVER
HDMI CAPTURE
SERVER
HDMI CAPTURE
HDMI Loop-Trough HDMI Loop-Trough HDMI Loop-TroughHDMI Loop-Trough
POWER ON/OS DOWN POWER ON/OS DOWN
HDMI CAPTURE HDMI CAPTURE
USB 3.0
BUS
POWER
USB 3.0
BUS
POWER
USB 3.0
BUS
POWER
USB 3.0
BUS
POWER
USB 3.0
BUS
POWER
ORIGINAL
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USB 3.0 CAPTURE HDMI 4K with Loop-through for Image redistribution
- 1. USB 3.0 CAPTURE HDMI 4K with Loop-through for Image redistribution 2018/09/01 SAKURA Internet, Inc. Research Center SR / Naoto MATSUMOTO (C) Copyright 1996-2017 SAKURA Internet Inc
- 2. USB 3.0 CAPTURE HDMI 4K with Loop-through for Image redistribution 2 # uname -sr; tail -1 /etc/redhat-release Linux 3.10.0-862.9.1.el7.x86_64 CentOS Linux release 7.4.1708 (Core) # yum install -y usbutils hwinfo mplayer v4l-utils ffmpeg git # lsusb -t /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/10p, 5000M |__ Port 4: Dev 2, If 9, Class=Human Interface Device, Driver=usbhid, 5000M # lsusb -vv # hwinfo --usb # v4l2-ctl --list-devices USB Capture HDMI 4K+ (usb-0000:00:14.0-4): /dev/video0 # v4l2-ctl -d /dev/video0 --info # v4l2-ctl --list-formats-ext -d /dev/video0 Type : Video Capture Name : YUV 4:2:2 (YUYV) Size: Discrete 4096x2160 Interval: Discrete 0.017s (60.000 fps) # wget https://libav.org/releases/libav-12.3.tar.xz # tar Jxvf ./libav-12.3.tar.xz; cd libav-12.3 # ./configure --disable-yasm; make; make install # avconv -f video4linux2 -input_format nv12 -s 1920x1080 -i /dev/video0 -qscale 10 out.mpeg Input #0, video4linux2, from '/dev/video0': Duration: N/A, start: 1240.062083, bitrate: 1492992 kb/s nv12, 1920x1080, 1492992 kb/s 60 fps, 1000k tbn # ffmpeg -f v4l2 -list_formats all -i /dev/video0 [video4linux2,v4l2 @ 0x24114c0] Raw : yuyv422 : YUV 4:2:2 (YUYV) : 640x360 640x480 720x480 720x576 768x576 800x600 856x480 960x540 1024x576 1024x768 1280x720 1280x800 1280x960 1280x1024 1368x768 1440x900 1600x1200 1680x1050 1920x1080 1920x1200 2048x1080 2560x1440 3840x2160 4096x2160 [video4linux2,v4l2 @ 0x24114c0] Raw : nv12 : YUV 4:2:0 (NV12) : 640x360 640x480 720x480 720x576 768x576 800x600 856x480 960x540 1024x576 1024x768 1280x720 1280x800 1280x960 1280x1024 1368x768 1440x900 1600x1200 1680x1050 1920x1080 1920x1200 2048x1080 2560x1440 3840x2160 4096x2160 © 2018, Nanjing Magewell Electronics Co., Ltd SERVERSERVER HDMI output SERVER SERVER HDMI CAPTURE SERVER HDMI CAPTURE HDMI Loop-Trough HDMI Loop-Trough HDMI Loop-TroughHDMI Loop-Trough POWER ON/OS DOWN POWER ON/OS DOWN HDMI CAPTURE HDMI CAPTURE USB 3.0 BUS POWER USB 3.0 BUS POWER USB 3.0 BUS POWER USB 3.0 BUS POWER USB 3.0 BUS POWER ORIGINAL READ once COPY COPY