Framegrabber / Scaler

For the conferences we are covering, most presenters use their own PC.
The resolution and frame rates of these PCs widely differ.
To get a consistent signal into the video mixer, we have to scale or convert the output signal to a uniform type.
Another similar list from the timevideo project can be found on https://github.com/timvideos/HDMI2USB/wiki/Alternatives

Currently in use in our setup

Mini Converter UpDownCross HD

Tronsmart Pavo M9

Other options currently not in our main setup

IP based

Epiphan Broadcaster

~3-10sec latency on the stream output

high price ~1k€

IP Based HDMI extender with decoder software

https://github.com/cfra/lenkeng

https://blog.benjojo.co.uk/post/cheap-hdmi-capture-for-linux

MIPI Camera Serial Interface (CSI) HDMI adpater (e.g. for Raspberry Pi)

picapture-hd1

Auvidea B101

USB2 / USB3 based

Those devices are usually accessed via Video4Linux2. USB3 / 3.1 capable devices are mostly UVC devices. A recent (> 5.0) Kernel is recommended. The Linux tool uvcdynctrl - libwebcam command line tool can be used to tweak settings.

USB2

HDMI2USB

https://hdmi2usb.tv/home/

https://github.com/timvideos/HDMI2USB/wiki

HD Capture USB (TLDR electronic waste)

USB3

Scaller to be used in combination with a capture device

Android HDMI Grabber / Scaler

'professional' scaler aka 'Folson Image Pro HD 2'

we only rent these if necessary for more complex setups e.g. used at C3

some [e.g. Analogway Pulse] can also be used as seemless switcher

expensive

Other

A list of potential interesting frame grabber hardware which we have not tested yet (from 2014, probably outdated)

Framegrabber Alternativen (DE)