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Review: A 19.9CNY HDMI-USB Adapter

·425 字·2 分钟·
The text is edited by Google Bard, there might be some problems.>

The text is edited by Google Bard, there might be some problems. #

0. Why am I buying this?>

0. Why am I buying this? #

I am going to have another miniPC soon, and I want to run Windows on it, not a headless Linux machine. As you know, installing Windows without a monitor is not easy. I also cannot afford to buy a monitor. One day, I was watching a video and I found out that there is something that can input HDMI and output to USB. This is probably what I am looking for.

1. Let’s have a look at it>

1. Let’s have a look at it #

Picture of it
Well… quite simple, tings at this price always have few designs.
It has a HDMI input and a USB output. Pretty simple, right?
And there is also a menu. It is likely to have a metal cover. Then we will know why it needs to be made of metal.

2. How to use it>

2. How to use it #

The menu gave us simple instructions for Windows:>

The menu gave us simple instructions for Windows: #

  1. Open VLC or PotPlayer.
  2. Click on “Media” and select “Open Capture Device.”
  3. Select the “USB Video” device.
For linux, you need ffmpeg and v4l2, though there are other ways to use it>

For linux, you need ffmpeg and v4l2, though there are other ways to use it #

I referred to this tutorial
use vim to write in /etc/udev/rules.d/91-hdmi-to-usb-ms2109.rules

# For HDMI-to-USB adaptor:
SUBSYSTEM=="usb", DRIVER=="snd-usb-audio", ATTRS{idProduct}=="2109", ATTRS{idVendor}=="534d", \
    RUN+="/bin/sh -c 'echo -n $kernel > /sys/bus/usb/drivers/snd-usb-audio/unbind'"

SUBSYSTEM=="usb", DRIVER=="snd-usb-audio", ATTRS{idProduct}=="2109", ATTRS{idVendor}=="534d", \
    ATTR{bInterfaceNumber}=="00", RUN+="/bin/sh -c 'sleep 1; echo -n $kernel > /sys/bus/usb/drivers/uvcvideo/bind'"

and then sudo udevadm control --reload-rules
To play the video, use
ffplay -f video4linux2 -framerate 50 -video_size 1920x1080 -input_format mjpeg /dev/video0

  • the video0 can be video1 or ends with other numbers
  • not all /dev/videox devices are avaliable but you can try
3. Feelings when using it>

3. Feelings when using it #

Problems:

  • The quality is rather low when I tried it on Windows 11 (Surface Pro 6).
  • It generates too much heat.
  • It sometimes freezes and has problems outputting video, but reconnecting the USB side fixes it. (This only happened on my Linux computer and the video devece also become unavaliable so I cannot say who caused this problem)

However, for a 19.9CNY adapter, it helped me to install Windows 11 and I would say it is worth buying if you need it.



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