Re: Kernel error "Unknown pixelformat 0x00000000" occurs when I start capture video

[Mauro Carvalho Chehab <mchehab+samsung@kernel.org>]

Em Tue, 08 Jan 2019 16:54:41 +0200
Laurent Pinchart <laurent.pinchart@ideasonboard.com> escreveu:

> Hello,
> 
> 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_ultra_gc
> > > 553)  
> > 
> > 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

Thanks,
Mauro