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by Retr0id 808 days ago
On the HDMI-to-USB front, beware of dongles that oversell themselves.

A blue USB connector just means a blue USB connector, it doesn't necessarily mean it's USB 3.0 (they might use weasel words like "USB 3.0 compatible").

Most have an integrated scaler, e.g. will accept 4K input even if they only capture at 1080p - the listing will likely emphasize the former rather than the later.

The MS2109 chip will do 1080p at 30fps, over USB 2.0 (mjpeg).

The MS2130 chip will do 4K at 30fps (mjpeg), or 1080p at 60fps (yuv), over USB 3.0.

1 comments

Some Sony cameras support acting as webcams natively over USB now too, so you can skip the HDMI step. Not sure about which specific models though
The list is here: https://support.d-imaging.sony.co.jp/app/webcam/en/download/ It weirdly includes a5100 and not a6000, which are internally almost identical.

Also at least for older cameras it’s 720p only, no fullhd, so you’re still better with hdmi adapter.