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たった1,000円！？ HDMI キャプチャー USB スティックを試してみた。

野良ハック（ざっきー）

Amazonでたった1,000円のHDMIキャプチャーUSBスティックを試してみました。

HDMIキャプチャーボード

結論から先に言うと、Windows(Windows 10)、macOS(Mojave、High Sierra)、Linux(ラズパイDebian Buster)のすべて動作OKでした。
USB2.0 UVCカメラ(1920x1080@30pまで)として認識されます。

製品仕様(抜粋)

HDMI input up to 4K resolution (3840×2160 @ 30 Hz) with 8/10/12 bit color depth support; Up to 15-meter cable (AWG26)
Video Output up to 1080p30 using YUV or JPEG modes
Audio – L-PCM
Compatible with common video software such as VLC, OBS, Amcap, etc …
Compliant with USB UVC video and UAC audio classes
Works on Windows, Android and Mac OS (and probably Linux too)
Power Supply – 5V/0.4A via USB port from host computer or board
Dimensions – 64x28x13 mm
Weight – 21.4g

付属マニュアル

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Windows(Windows 10)

イメージキャプチャーで表示

スクリーンショット (25)

macOS(Mojave、High Sierra)

デバイス表示

$ system_profiler SPUSBDataType
USB:

   USB 3.0 Bus:

     Host Controller Driver: AppleUSBXHCILPT
     PCI Device ID: 0x9c31 
     PCI Revision ID: 0x0004 
     PCI Vendor ID: 0x8086 

       Miscellaneous Device:

         Product ID: 0x2109
         Vendor ID: 0x534d
         Version: 21.00
         Speed: Up to 480 Mb/sec
         Manufacturer: MACROSILICON
         Location ID: 0x14100000 / 7
         Current Available (mA): 500
         Current Required (mA): 500
         Extra Operating Current (mA): 0

OBS Studioの映像キャプチャーデバイス表示

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Linux(ラズパイDebian Buster)

Guvcviewコマンドで表示

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デバイス表示 (名前が空欄でした)

$ lsusb
Bus 002 Device 002: ID 090c:3267 Silicon Motion, Inc. - Taiwan (formerly Feiya Technology Corp.) 
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 15ca:00c3 Textech International Ltd. Mini Optical Mouse
Bus 001 Device 004: ID 04fe:0006 PFU, Ltd Happy Hacking Keyboard Lite2
Bus 001 Device 003: ID 04fe:0008 PFU, Ltd 
Bus 001 Device 007: ID 534d:2109  
Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

カメラ性能の表示

$ v4l2-ctl --list-formats-ext --device=/dev/video0
ioctl: VIDIOC_ENUM_FMT
	Type: Video Capture

	[0]: 'MJPG' (Motion-JPEG, compressed)
		Size: Discrete 1920x1080
			Interval: Discrete 0.033s (30.000 fps)
			Interval: Discrete 0.040s (25.000 fps)
			Interval: Discrete 0.050s (20.000 fps)
			Interval: Discrete 0.100s (10.000 fps)
			Interval: Discrete 0.200s (5.000 fps)
		Size: Discrete 1600x1200
			Interval: Discrete 0.033s (30.000 fps)
			Interval: Discrete 0.040s (25.000 fps)
			Interval: Discrete 0.050s (20.000 fps)
			Interval: Discrete 0.100s (10.000 fps)
			Interval: Discrete 0.200s (5.000 fps)
		Size: Discrete 1360x768
			Interval: Discrete 0.033s (30.000 fps)
			Interval: Discrete 0.040s (25.000 fps)
			Interval: Discrete 0.050s (20.000 fps)
			Interval: Discrete 0.100s (10.000 fps)
			Interval: Discrete 0.200s (5.000 fps)
		Size: Discrete 1280x1024
			Interval: Discrete 0.033s (30.000 fps)
			Interval: Discrete 0.040s (25.000 fps)
			Interval: Discrete 0.050s (20.000 fps)
			Interval: Discrete 0.100s (10.000 fps)
			Interval: Discrete 0.200s (5.000 fps)
		Size: Discrete 1280x960
			Interval: Discrete 0.020s (50.000 fps)
			Interval: Discrete 0.033s (30.000 fps)
			Interval: Discrete 0.050s (20.000 fps)
			Interval: Discrete 0.100s (10.000 fps)
			Interval: Discrete 0.200s (5.000 fps)
		Size: Discrete 1280x720
			Interval: Discrete 0.017s (60.000 fps)
			Interval: Discrete 0.020s (50.000 fps)
			Interval: Discrete 0.033s (30.000 fps)
			Interval: Discrete 0.050s (20.000 fps)
			Interval: Discrete 0.100s (10.000 fps)
		Size: Discrete 1024x768
			Interval: Discrete 0.017s (60.000 fps)
			Interval: Discrete 0.020s (50.000 fps)
			Interval: Discrete 0.033s (30.000 fps)
			Interval: Discrete 0.050s (20.000 fps)
			Interval: Discrete 0.100s (10.000 fps)
		Size: Discrete 800x600
			Interval: Discrete 0.017s (60.000 fps)
			Interval: Discrete 0.020s (50.000 fps)
			Interval: Discrete 0.033s (30.000 fps)
			Interval: Discrete 0.050s (20.000 fps)
			Interval: Discrete 0.100s (10.000 fps)
		Size: Discrete 720x576
			Interval: Discrete 0.017s (60.000 fps)
			Interval: Discrete 0.020s (50.000 fps)
			Interval: Discrete 0.033s (30.000 fps)
			Interval: Discrete 0.050s (20.000 fps)
			Interval: Discrete 0.100s (10.000 fps)
		Size: Discrete 720x480
			Interval: Discrete 0.017s (60.000 fps)
			Interval: Discrete 0.020s (50.000 fps)
			Interval: Discrete 0.033s (30.000 fps)
			Interval: Discrete 0.050s (20.000 fps)
			Interval: Discrete 0.100s (10.000 fps)
		Size: Discrete 640x480
			Interval: Discrete 0.017s (60.000 fps)
			Interval: Discrete 0.020s (50.000 fps)
			Interval: Discrete 0.033s (30.000 fps)
			Interval: Discrete 0.050s (20.000 fps)
			Interval: Discrete 0.100s (10.000 fps)
	[1]: 'YUYV' (YUYV 4:2:2)
		Size: Discrete 1920x1080
			Interval: Discrete 0.200s (5.000 fps)
		Size: Discrete 1600x1200
			Interval: Discrete 0.200s (5.000 fps)
		Size: Discrete 1360x768
			Interval: Discrete 0.125s (8.000 fps)
		Size: Discrete 1280x1024
			Interval: Discrete 0.125s (8.000 fps)
		Size: Discrete 1280x960
			Interval: Discrete 0.125s (8.000 fps)
		Size: Discrete 1280x720
			Interval: Discrete 0.100s (10.000 fps)
		Size: Discrete 1024x768
			Interval: Discrete 0.100s (10.000 fps)
		Size: Discrete 800x600
			Interval: Discrete 0.050s (20.000 fps)
			Interval: Discrete 0.100s (10.000 fps)
			Interval: Discrete 0.200s (5.000 fps)
		Size: Discrete 720x576
			Interval: Discrete 0.040s (25.000 fps)
			Interval: Discrete 0.050s (20.000 fps)
			Interval: Discrete 0.100s (10.000 fps)
			Interval: Discrete 0.200s (5.000 fps)
		Size: Discrete 720x480
			Interval: Discrete 0.033s (30.000 fps)
			Interval: Discrete 0.050s (20.000 fps)
			Interval: Discrete 0.100s (10.000 fps)
			Interval: Discrete 0.200s (5.000 fps)
		Size: Discrete 640x480
			Interval: Discrete 0.033s (30.000 fps)
			Interval: Discrete 0.050s (20.000 fps)
			Interval: Discrete 0.100s (10.000 fps)
			Interval: Discrete 0.200s (5.000 fps)

分解

金属の筐体にプラスネジ(4本)で止められているだけで、簡単に基板を取り出すことができました。中身は非常にシンプルでMacroSilicon MS2109というチップが搭載されていました。

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まとめ

HDMIキャプチャーボードは高価なものが多いので、画質(荒さ)や性能(応答遅延)はあまり問わずお手軽に使いたい場合には良いと思いました。

HDMIキャプチャーボード


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