cx231xx interlace-like artifacts

cx231xx interlace-like artifacts

[Yan Seiner]

I just recently changed my vidcap to a Hauppage .  Now I get these 
interlace-like artifacts:

http://seiner.com/cz/rtpictures/2012_07_25T14h20m46sZ_0.451651_44.090619_-123.126059.jpg
http://seiner.com/cz/rtpictures/2012_07_25T14h22m48sZ_0.224624_44.089669_-123.139100.jpg

cxx231x.h has the following line:

#define CX231XX_INTERLACED_DEFAULT      1

Is there some way to turn off interlacing with a parameter?

Thanks,

--Yan

Re: cx231xx interlace-like artifacts

[Yan Seiner]

Yan Seiner wrote:
> I just recently changed my vidcap to a Hauppage .  Now I get these 
> interlace-like artifacts:
>
> http://seiner.com/cz/rtpictures/2012_07_25T14h20m46sZ_0.451651_44.090619_-123.126059.jpg 
>
> http://seiner.com/cz/rtpictures/2012_07_25T14h22m48sZ_0.224624_44.089669_-123.139100.jpg 
>
>
> cxx231x.h has the following line:
>
> #define CX231XX_INTERLACED_DEFAULT      1
>
> Is there some way to turn off interlacing with a parameter?
>
>

OOPS! hit send too soon, it seems.  Here's the card info:

[  487.640000] cx231xx #0: New device Hauppauge Hauppauge Device @ 480 
Mbps (2040:c200) with 5 interfaces
[  487.650000] cx231xx #0: registering interface 1
[  487.650000] cx231xx #0: can't change interface 3 alt no. to 3: Max. 
Pkt size = 0
[  487.660000] cx231xx #0: can't change interface 4 alt no. to 1: Max. 
Pkt size = 0
[  487.670000] cx231xx #0: Identified as Hauppauge USB Live 2 (card=9)
[  487.790000] cx231xx #0: cx231xx_dif_set_standard: setStandard to ffffffff
[  487.800000] cx25840 0-0044: cx23102 A/V decoder found @ 0x88 (cx231xx #0)
[  487.840000] cx25840 0-0044:  Firmware download size changed to 16 
bytes max length
[  489.940000] cx25840 0-0044: loaded v4l-cx231xx-avcore-01.fw firmware 
(16382 bytes)
[  489.990000] cx231xx #0: cx231xx #0: v4l2 driver version 0.0.2
[  490.020000] cx231xx #0: cx231xx_dif_set_standard: setStandard to ffffffff
[  490.090000] cx231xx #0: video_mux : 0
[  490.090000] cx231xx #0: do_mode_ctrl_overrides : 0xb000
[  490.100000] cx231xx #0: do_mode_ctrl_overrides NTSC
[  490.110000] cx231xx #0: cx231xx #0/0: registered device video0 [v4l2]
[  490.120000] cx231xx #0: cx231xx #0/0: registered device vbi0
[  490.130000] cx231xx #0: V4L2 device registered as video0 and vbi0
[  490.130000] cx231xx #0: EndPoint Addr 0x8400, Alternate settings: 5
[  490.140000] cx231xx #0: Alternate setting 0, max size= 512
[  490.140000] cx231xx #0: Alternate setting 1, max size= 184
[  490.150000] cx231xx #0: Alternate setting 2, max size= 728
[  490.160000] cx231xx #0: Alternate setting 3, max size= 2892
[  490.160000] cx231xx #0: Alternate setting 4, max size= 1800
[  490.170000] cx231xx #0: EndPoint Addr 0x8500, Alternate settings: 2
[  490.170000] cx231xx #0: Alternate setting 0, max size= 512
[  490.180000] cx231xx #0: Alternate setting 1, max size= 512
[  490.180000] cx231xx #0: EndPoint Addr 0x8600, Alternate settings: 2
[  490.190000] cx231xx #0: Alternate setting 0, max size= 512
[  490.200000] cx231xx #0: Alternate setting 1, max size= 576


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Re: cx231xx interlace-like artifacts

[Devin Heitmueller]

On Wed, Jul 25, 2012 at 8:51 PM, Yan Seiner <yan@seiner.com> wrote:
> Yan Seiner wrote:
>>
>> I just recently changed my vidcap to a Hauppage .  Now I get these
>> interlace-like artifacts:
>>
>>
>> http://seiner.com/cz/rtpictures/2012_07_25T14h20m46sZ_0.451651_44.090619_-123.126059.jpg
>>
>> http://seiner.com/cz/rtpictures/2012_07_25T14h22m48sZ_0.224624_44.089669_-123.139100.jpg

The video you are capturing is inherently interlaced.  The Hauppauge
device does raw capture of interlaced video, and takes no
responsibility for deinterlacing.  You need your application to do
such deinterlacing (all the major applications support such:  mplayer,
vlc, tvtime, etc).

>> cxx231x.h has the following line:
>>
>> #define CX231XX_INTERLACED_DEFAULT      1
>>
>> Is there some way to turn off interlacing with a parameter?

This parameter doesn't do what you think.  It's used for cases where
progressive video is being delivered by the camera (or progressive
scan DVD player).  It doesn't cause the device to perform
deinterlacing.

In short, everything you are seeing is expected behavior.  If you want
to deinterlace the video, you need to do this in the application.

Devin

-- 
Devin J. Heitmueller - Kernel Labs
http://www.kernellabs.com