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Subject: Re: OV511 based webcam and webcamd
To: freebsd-multimedia@freebsd.org
References: <20200403120447.GA2599@emphyrio.blackend.org>
 <d343d1cc-0651-7cc8-2c3a-f6419317c4fd@selasky.org>
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 <20200407163528.GA1027@emphyrio.blackend.org>
From: Hans Petter Selasky <hps@selasky.org>
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Date: Tue, 7 Apr 2020 18:59:44 +0200
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On 2020-04-07 18:35, Marc Fonvieille wrote:
> "ugen0.3: <vendor 0x05a9 product 0xa511> at usbus0 (disconnected)" and
> webcamd ends, always at the same place.

This means the firmware has crashed. Likely the last command is causing 
this.

Try using usbdump:

usbdump -i usbusX -f Y -s 65536 -vvv

--HPS