[mythtv-users] Recording from HDMI

[David Watkins]

On Sat, 18 Feb 2023 at 09:26, Jan Ceuleers <jan.ceuleers at gmail.com> wrote:

> Dear mythizens,
>
> I have just created a new page on the wiki on the subject of recording
> from HDMI. It is a case study of how I have gone about this, and not so
> much a how-to (although you are of course welcome to regard it as such).
>
> https://www.mythtv.org/wiki/Recording_from_HDMI
>
> The article discusses other topics as well, such as infrared channel
> changing and the use of system events.
>
> Hope this helps.
>
> Cheers, Jan
> _______________________________________________
>
>
This is very interesting.  So interesting in fact that I've bought one of
the devices to play with.

Following the instructions it was easy enough to setup, even though I'm a
bit out of my depth with some of it.

I'm using a Windows laptop as an HDMI test source and even though the
laptop says it's connected at 1920x1080 and the LKV admin page shows the
input as 1920x1080, ffmpeg is showing (and capturing) a 1728x1080 video
stream, which was a surprise.  I don't think it's a resolution I've come
across before.

...
Stream #0:0[0x7d1]: Video: h264 (Constrained Baseline) ([27][0][0][0] /
0x001B), yuv420p(progressive), 1728x1080, 29.97 fps, 29.97 tbr, 90k tbn
Stream #0:1[0x7d2]: Audio: mp2 ([4][0][0][0] / 0x0004), 48000 Hz, stereo,
fltp, 192 kb/s
...

Any ideas why that would be?  I'd rather have 1920 x 1080.
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