From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Cc: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>,
linux-media@vger.kernel.org
Subject: Re: Kernel error "Unknown pixelformat 0x00000000" occurs when I start capture video
Date: Tue, 08 Jan 2019 17:55:33 +0200 [thread overview]
Message-ID: <14736242.P0ZrnmSNTt@avalon> (raw)
In-Reply-To: <20190108131621.59a825b7@coco.lan>
On Tuesday, 8 January 2019 17:16:21 EET Mauro Carvalho Chehab wrote:
> Em Tue, 08 Jan 2019 16:54:41 +0200 Laurent Pinchart escreveu:
> > On Tuesday, 8 January 2019 16:45:37 EET Mauro Carvalho Chehab wrote:
> >> Em Sun, 6 Jan 2019 01:05:16 +0500 Mikhail Gavrilov escreveu:
> >>> Hi folks!
> >>> Every time when I start capture video from external capture card
> >>> Avermedia Live Gamer ULTRA GC553
> >>> (https://www.avermedia.com/gaming/product/game_capture/live_gamer_ultr
> >>> a_gc553)
> >>
> >> What's the driver used by this device?
> >>
> >> A quick browsing at the Avermedia page you pointed, it indicates that
> >> this should be using the UVC driver:
> >>
> >> "The LGU takes full advantage of UVC technology, which
> >> basically standardizes video drivers across Windows and Mac.
> >> In other words, all you need to do is plug your LGU to
> >> your PC or Mac and it’s ready to record and stream."
> >>
> >> So, I *suspect* that it uses the uvcvideo driver, but better to
> >> double check.
> >
> > Given the full kernel log part of the original message,
> >
> > [ 5.184850] uvcvideo: Unknown video format
> > 30313050-0000-0010-8000-00aa00389b71
>
> Hmm... according with:
> https://gix.github.io/media-types/
>
> It seems to be this one ('P010'):
>
> {30313050-0000-0010-8000-00AA00389B71} (MFVideoFormat_P010)MFMS
> {30313050-0000-0010-8000-00AA00389B71} (MEDIASUBTYPE_P010)DSMS
>
> YUV planar 4:2:0 10 bits.
>
> If so, there's a description here:
>
> https://docs.microsoft.com/en-us/windows/desktop/medfound/10-bit-and-16-bit
> -yuv-video-formats
That seems to match. The problem should then be easy to fix, but we need to
add a corresponding fourcc to the V4L2 API, and matching documentation. Any
volunteer ? :-)
--
Regards,
Laurent Pinchart
next prev parent reply other threads:[~2019-01-08 15:54 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-05 20:05 Kernel error "Unknown pixelformat 0x00000000" occurs when I start capture video Mikhail Gavrilov
2019-01-08 14:45 ` Mauro Carvalho Chehab
2019-01-08 14:54 ` Laurent Pinchart
2019-01-08 15:16 ` Mauro Carvalho Chehab
2019-01-08 15:55 ` Laurent Pinchart [this message]
2019-01-08 15:18 ` Mikhail Gavrilov
2019-01-08 15:58 ` Laurent Pinchart
2019-01-08 16:11 ` Mikhail Gavrilov
2019-01-08 18:49 ` Mauro Carvalho Chehab
2019-01-08 19:00 ` Mauro Carvalho Chehab
2019-01-09 3:51 ` Mikhail Gavrilov
2019-01-09 12:03 ` Mauro Carvalho Chehab
2019-01-08 21:29 ` Laurent Pinchart
2019-01-09 12:19 ` Sakari Ailus
2019-01-09 13:01 ` P010 fourcc format support - Was: " Mauro Carvalho Chehab
2019-01-09 16:42 ` Ayaka
2019-01-09 16:52 ` Nicolas Dufresne
2019-01-09 17:28 ` Mauro Carvalho Chehab
2019-01-09 18:20 ` Nicolas Dufresne
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