mjpeg-users — The list for users of the MJPEG tools

Re: [Mjpeg-users] Problem with xawtv

[Bernhard P. <pra...@ne...>]

> Hi Wolfgang,
> I made your said :
>             Uncomment 'v4l_bufsize=1280' in the update script.
> And I changed in lilo.conf : append="mem=29M"
> Notice: my computer is a P166 with 32Mo RAM, Matrox MGA Millenium (4Mo) as
> graphic card.
> I had this message after starting my X server :
> 
>      [root@net237 xawtv-3.37]# xawtv
>      this is xawtv-3.21, running on linux/i586 (2.2.18)
>      visual : id=0x22  class=4 (TrueColor), depth=24
>      visual : id=0x23  class=5 (DirectColor), depth=24
>      X11 : 1024x768, 32 bit/pixel, 4096 byte/scanline, DGA
>      waitpid : no process child
>      waitpid : no process child
>      v4l : 1024x768, 32 bit/pixel, 4096 byte/scanline
>      wmhooks : gnome
> 
> In the screen, it appears a succession of 4 images on the same line. These
> images are spread out
> horizontally, and are shifted compared to the framework of the window.
> Moreover, the image is in Black & White, bad quality (horizontal frame).
> 
> My graphics card support which the resolution below 24 bit.
> Maybe that the 1024x768, 32 bit/pixel required by xawtv is the problem?
> What do you think about it?  How can one modify that?
> Thanks.

Seems that your are using 24bit color depth. This depth is not detected
correct by xawtv (and other TV-Apps) in xawtv you have to use the -b
option. So your command should look like: xawtv -b 24 

An other solution would be to switch to an other color depth, 16 or if
possible 32. 


Bernhard

Re: [Mjpeg-users] Problem with xawtv

[raveloja <rav...@sy...>]

Hi Wolfgang,
I made your said :
            Uncomment 'v4l_bufsize=1280' in the update script.
And I changed in lilo.conf : append="mem=29M"
Notice: my computer is a P166 with 32Mo RAM, Matrox MGA Millenium (4Mo) as
graphic card.
I had this message after starting my X server :

     [root@net237 xawtv-3.37]# xawtv
     this is xawtv-3.21, running on linux/i586 (2.2.18)
     visual : id=0x22  class=4 (TrueColor), depth=24
     visual : id=0x23  class=5 (DirectColor), depth=24
     X11 : 1024x768, 32 bit/pixel, 4096 byte/scanline, DGA
     waitpid : no process child
     waitpid : no process child
     v4l : 1024x768, 32 bit/pixel, 4096 byte/scanline
     wmhooks : gnome

In the screen, it appears a succession of 4 images on the same line. These
images are spread out
horizontally, and are shifted compared to the framework of the window.
Moreover, the image is in Black & White, bad quality (horizontal frame).

My graphics card support which the resolution below 24 bit.
Maybe that the 1024x768, 32 bit/pixel required by xawtv is the problem?
What do you think about it?  How can one modify that?
Thanks.

---------------Ravelojaona--------------


Wolfgang Scherr wrote:

> Hi,
>
> you need a bigger buffer than the default when trying this (a picture
> has 320x240x3 byte at least!). 'steamer' reads uncompressed data from
> the buz (as it is mainly considered for using with bt8x8 cards which
> have no compression).
>
> Uncomment 'v4l_bufsize=1280' in the update script.
>
> You may also need the mem-option with 3MB less memory when loading the
> kernel. If you have a 128MB system, use e.g. 'boot=125M' at the lilo
> prompt when still getting errors after above change. (You can add it in
> lilo conf as append option).
>
> Bye,
>
> Wolfgang
>
> raveloja wrote:
> >
> > Hello everybody,
> >
> > I have a problem with xawtv tool.
> > I used zoran-0.7 with Miro DC10plus in kernel 2.2.18. A Digital Color
> > Camera (composite/PAL) is connected to the input line of the DC10plus. I
> > would like take 5 images  (format JPEG) with this camera,  for this, I
> > type :
> >
> > [root:/usr/src/modules/xawtv]#streamer -s 320x240 -t 5 -o
> > picture000.jpeg
> >
> > I received the following message:
> >
> >      adv7176: illegal norm: 3
> >      ioctl VIDIOCMCAPTURE (0,rgb24,320x240) : invalid parameter
> >      ioctl VIDIOCMCAPTURE (1,rgb24,320x240) : invalid parameter
> >      ioctl VIDIOCMCAPTURE (0,rgb24,320x240) : invalid parameter
> >      DC10plus [0] : v4l_sync : Attempt to sync on a buffer which
> >      was not queued ?
> >      ioctl VIDIOCSYNC : Error of protocol
> >      ioctl VIDIOCMCAPTURE (1,rgb24,320x240) : invalid parameter
> >      DC10plus [0] : v4l_sync : Attempt to sync on a buffer which
> >      was not queued ?
> >      ioctl VIDIOCSYNC : Error of protocol
> >
> > In /usr/src/modules/xawtv/ directory, 5 images (.jpeg) are created but
> > there is nothing inside.
> >
> > However, I have made "./update dc10plus", and checked if the video card
> > is detected :
> >
> > [root:/usr/src/modules/zoran-driver-0.7]#./update dc10plus
> > Using /lib/modules/2.2.18/kernel......../videodev.o
> > Using /lib/modules/2.2.18/kernel......../i2c.o
> > [root:/usr/src/modules/zoran-driver-0.7]#lsmod
> > Module                  Size  Used by
> > zoran                  79488   0  (unused)
> > adv7175               2432   1
> > saa7110               2624   1
> > i2c                        3552   4  [zoran adv7175 saa7110]
> > videodev              2688   1  [zoran]
> > vfat                       9680   0  (autoclean)
> > fat                       31424   0  (autoclean) [vfat]
> >
> > Here's the output of  lspci -v on my machine:
> >
> > 00:0e.0 Multimedia video controller: Zoran Corporation ZR36057PQC Video
> > cutting chipset (rev 02)
> >              Subsystem: Miro Computer Products AG DC10 Plus
> >              Flags: bus master, fast devsel, latency 32, IRQ 10
> >              Memory at ffbea000 (32-bit, non-prefetchable)
> >
> > What can be the problem ? And, How to take an image (JPEG) with xawtv ?
> >
> > _______________________________________________
> > Mjpeg-users mailing list
> > Mjp...@li...
> > http://lists.sourceforge.net/lists/listinfo/mjpeg-users
>
> _______________________________________________
> Mjpeg-users mailing list
> Mjp...@li...
> http://lists.sourceforge.net/lists/listinfo/mjpeg-users

Re: [Mjpeg-users] archives not working?

[Gernot Z. <gz...@ly...>]

> http://lists.sourceforge.net/archives//mjpeg-users/
> 
> Index of /archives//mjpeg-users
> 
>      Parent Directory 
> 
> Apache/1.3.14 Server at lists.sourceforge.net Port 80
Sorry, I forgot to turn on the archival option ... hope it works 
(but I am still confused that there seem to be two mjpeg-users-archive
pages, one internal on Sourceforge (the one you sent me), and one on
geocrawler ... hmm ... 

Servus,
  Gernot

/-----------------------------W-E-L-C-O-M-E------------------------------\
T                 The Austria <=> Sweden connection.....                 T
|                      E-Mail: gz...@ly...                         H
O                Homepage: http://www.lysator.liu.se/~gz                 E
\------------------------------F-U-T-U-R-E-------------------------------/