From owner-freebsd-usb@freebsd.org  Wed Jul  8 03:10:16 2020
Return-Path: <owner-freebsd-usb@freebsd.org>
Delivered-To: freebsd-usb@mailman.nyi.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1])
 by mailman.nyi.freebsd.org (Postfix) with ESMTP id B9FE8354819
 for <freebsd-usb@mailman.nyi.freebsd.org>;
 Wed,  8 Jul 2020 03:10:16 +0000 (UTC)
 (envelope-from swills@FreeBSD.org)
Received: from mouf.net (mouf.net [IPv6:2607:fc50:0:4400:216:3eff:fe69:33b3])
 (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
 (Client CN "mouf.net", Issuer "mouf.net" (not verified))
 by mx1.freebsd.org (Postfix) with ESMTPS id 4B1knh0qKDz4QCn
 for <freebsd-usb@FreeBSD.org>; Wed,  8 Jul 2020 03:10:15 +0000 (UTC)
 (envelope-from swills@FreeBSD.org)
Received: from lrrr.mouf.net (cpe-76-182-16-135.nc.res.rr.com [76.182.16.135])
 (authenticated bits=0)
 by mouf.net (8.14.9/8.14.9) with ESMTP id 0683A2H5030228
 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NOT)
 for <freebsd-usb@FreeBSD.org>; Wed, 8 Jul 2020 03:10:07 GMT
 (envelope-from swills@FreeBSD.org)
To: freebsd-usb@FreeBSD.org
From: Steve Wills <swills@FreeBSD.org>
Subject: HDMI video capture device
Message-ID: <4bb59ca5-36e1-38ca-4789-ec0f7fd8b69a@FreeBSD.org>
Date: Tue, 7 Jul 2020 23:09:57 -0400
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:68.0) Gecko/20100101
 Thunderbird/68.10.0
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Language: en-US
Content-Transfer-Encoding: 7bit
X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.4.3
 (mouf.net [199.48.129.64]); Wed, 08 Jul 2020 03:10:07 +0000 (UTC)
X-Spam-Status: No, score=0.3 required=4.5 tests=KHOP_HELO_FCRDNS autolearn=no
 autolearn_force=no version=3.4.1
X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on mouf.net
X-Virus-Scanned: clamav-milter 0.99.2 at mouf.net
X-Virus-Status: Clean
X-Rspamd-Queue-Id: 4B1knh0qKDz4QCn
X-Spamd-Bar: /
Authentication-Results: mx1.freebsd.org;
	none
X-Spamd-Result: default: False [0.00 / 15.00];
 ASN(0.00)[asn:36236, ipnet:2607:fc50::/36, country:US];
 local_wl_from(0.00)[FreeBSD.org]
X-BeenThere: freebsd-usb@freebsd.org
X-Mailman-Version: 2.1.33
Precedence: list
List-Id: FreeBSD support for USB <freebsd-usb.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-usb>,
 <mailto:freebsd-usb-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-usb/>
List-Post: <mailto:freebsd-usb@freebsd.org>
List-Help: <mailto:freebsd-usb-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-usb>,
 <mailto:freebsd-usb-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 08 Jul 2020 03:10:16 -0000

Hi,

I ordered one of these:

https://smile.amazon.com/gp/product/B089CR8S8K/

and it's recognized and works OK, but the frame rate seems a bit slow in 
OBS-Studio compared to what I'm seeing from my Logitech C930e cam.

I decided to test on a Windows PC I happened to have and didn't see the 
issue, so it seems to be a driver issue or some other sort of setting issue.

Comparing the two devices in usbconfig show_ifdrv, I see this for the 
Logitech:

ugen0.8: <vendor 0x046d Logitech Webcam C930e> at usbus0, cfg=0 md=HOST 
spd=HIGH (480Mbps) pwr=ON (500mA)
ugen0.8.2: uaudio0: <vendor 0x046d Logitech Webcam C930e, class 239/2, 
rev 2.00/0.13, addr 20>

and this for the HDMI capture:

ugen0.9: <MACROSILICON product 0x2109> at usbus0, cfg=0 md=HOST spd=HIGH 
(480Mbps) pwr=ON (500mA)
ugen0.9.2: uaudio1: <USB Digital Audio>
ugen0.9.4: uhid0: <MACROSILICON product 0x2109, class 239/2, rev 
2.00/21.00, addr 21>

The only other difference I see is that looking at sysctl output I see 
this for the Logitech:

dev.pcm.10.rec.vchanrate: 48000

and this for the HDMI capture:

dev.pcm.11.rec.vchanrate: 96000

Any suggestions or ideas?

Thanks,
Steve