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USB 3.0 CAPTURE HDMI 4K with Loop-through for Image redistribution

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USB 3.0 CAPTURE HDMI 4K with Loop-through for Image redistribution

2018/08/26
SAKURA Internet, Inc.
Research Center
SR / Naoto MATSUMOTO

Published in: Technology
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USB 3.0 CAPTURE HDMI 4K with Loop-through for Image redistribution

  1. 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. 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

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