flicker/jumpy at the bottom of the video

flicker/jumpy at the bottom of the video

[Purushottam R S]

Hi ,

I am using latest gspca driver from dvb for camera driver. But I see bottom of the video has flickering/jumping effect.

I have "Zippys" web camera, which is from Z-Star.  I have loaded the following drivers.
1. gspca_zc3xx 44832 0 - Live 0xbf01f000
2. gspca_main 23840 1 gspca_zc3xx, Live 0xbf014000
3. videodev 36672 1 gspca_main, Live 0xbf006000
4. v4l1_compat 14788 1 videodev, Live 0xbf000000

But otherwise there is no issue with video.

I tested using gst-launch pipeline.

regards
Purush



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Re: flicker/jumpy at the bottom of the video

[Michael Trimarchi]

Purushottam R S wrote:
> Hi ,
> 
> I am using latest gspca driver from dvb for camera driver. But I see bottom of the video has flickering/jumping effect.
> 
> I have "Zippys" web camera, which is from Z-Star.  I have loaded the following drivers.
> 1. gspca_zc3xx 44832 0 - Live 0xbf01f000
> 2. gspca_main 23840 1 gspca_zc3xx, Live 0xbf014000
> 3. videodev 36672 1 gspca_main, Live 0xbf006000
> 4. v4l1_compat 14788 1 videodev, Live 0xbf000000
> 
> But otherwise there is no issue with video.
> 
> I tested using gst-launch pipeline.

Can you try using vlc application. I have the same effect using v4l1 compat api

Michael

> 
> regards
> Purush
> 
> 
> 
>       The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
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Re: flicker/jumpy at the bottom of the video

[Purushottam R S]

Added following property to pipeline, now it is better,

v4l2src always-copy=0 queue-size=4

regards
Purush

----- Original Message ----
From: Michael Trimarchi <michael@panicking.kicks-ass.org>
To: Purushottam R S <purushottam_r_s@yahoo.com>
Cc: linux-media@vger.kernel.org
Sent: Mon, 23 November, 2009 9:01:16 PM
Subject: Re: flicker/jumpy at the bottom of the video

Purushottam R S wrote:
> Hi ,
> 
> I am using latest gspca driver from dvb for camera driver. But I see bottom of the video has flickering/jumping effect.
> 
> I have "Zippys" web camera, which is from Z-Star.  I have loaded the following drivers.
> 1. gspca_zc3xx 44832 0 - Live 0xbf01f000
> 2. gspca_main 23840 1 gspca_zc3xx, Live 0xbf014000
> 3. videodev 36672 1 gspca_main, Live 0xbf006000
> 4. v4l1_compat 14788 1 videodev, Live 0xbf000000
> 
> But otherwise there is no issue with video.
> 
> I tested using gst-launch pipeline.

Can you try using vlc application. I have the same effect using v4l1 compat api

Michael

> 
> regards
> Purush
> 
> 
> 
>       The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 


      The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/

Re: flicker/jumpy at the bottom of the video

[Jean-Francois Moine]

On Mon, 23 Nov 2009 15:00:09 +0530 (IST)
Purushottam R S <purushottam_r_s@yahoo.com> wrote:

> I am using latest gspca driver from dvb for camera driver. But I see
> bottom of the video has flickering/jumping effect.
> 
> I have "Zippys" web camera, which is from Z-Star.  I have loaded the
> following drivers.
> 1. gspca_zc3xx 44832 0 - Live 0xbf01f000
> 2. gspca_main 23840 1 gspca_zc3xx, Live 0xbf014000
> 3. videodev 36672 1 gspca_main, Live 0xbf006000
> 4. v4l1_compat 14788 1 videodev, Live 0xbf000000
> 
> But otherwise there is no issue with video.

Hello Purush,

Sorry for the delay. We know that some webcams with Z-Star chips have
such a problem, but it is a hardware problem and we did not find yet a
way to fix it correctly...

Best regards.

-- 
Ken ar c'hentañ	|	      ** Breizh ha Linux atav! **
Jef		|		http://moinejf.free.fr/

Re: flicker/jumpy at the bottom of the video

[Olivier Lorin]

Hi,

one of the sensors managed by the gspca_gl860 has some weird
resolutions : 800 x 598 and 1600 x 1198. To set these resolutions to
800 x 600 and 1600 x 1200 causes a flickering effect because of both
missing lines of data from the sensor. Thus a stupid question, does
the resolutions are these chip are well known ?

O. Lorin

2009/12/22, Jean-Francois Moine <moinejf@free.fr>:
> On Mon, 23 Nov 2009 15:00:09 +0530 (IST)
> Purushottam R S <purushottam_r_s@yahoo.com> wrote:
>
>> I am using latest gspca driver from dvb for camera driver. But I see
>> bottom of the video has flickering/jumping effect.
>>
>> I have "Zippys" web camera, which is from Z-Star.  I have loaded the
>> following drivers.
>> 1. gspca_zc3xx 44832 0 - Live 0xbf01f000
>> 2. gspca_main 23840 1 gspca_zc3xx, Live 0xbf014000
>> 3. videodev 36672 1 gspca_main, Live 0xbf006000
>> 4. v4l1_compat 14788 1 videodev, Live 0xbf000000
>>
>> But otherwise there is no issue with video.
>
> Hello Purush,
>
> Sorry for the delay. We know that some webcams with Z-Star chips have
> such a problem, but it is a hardware problem and we did not find yet a
> way to fix it correctly...
>
> Best regards.
>
> --
> Ken ar c'hentañ	|	      ** Breizh ha Linux atav! **
> Jef		|		http://moinejf.free.fr/
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>