I think this is the sort of thing that gamers use to broadcast their screens.
I seem to recall from a few years ago issues with these sorts of devices not working well with certain motherboards.
I see some of these record to SD... if you don't intend to broadcast real time that would take a lot of
system dynamics out of the equation!  You can then transfer the SD data to the PC for editing or whatever.

On 3/6/2017 9:19 PM, Dan Roganti via vcf-midatlantic wrote:
On Mon, Mar 6, 2017 at 8:24 PM, Chris Fala via vcf-midatlantic <
vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:

Can anyone recommend a way to take an HDMI video signal and convert it to
USB so it can be recorded on a computer? I found a device that does this
but it is around $300 and I wanted to find something cheaper.

Chris F.

​I haven't tried, but I always wanted to find out how good are these hdmi
with the online broadcasting craze, gamers are constantly uploading their
tournaments in HD
and so these recorders are becoming so popular
they always have the same recorders which require a desktop to operate,
just as the early generation recorders with only composite video,
but this one even records hdmi to sd card without the need for a desktop
and it's rather inexpensive at $150