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 Forum index » House Training » Beginners Help ( Start Here)
webcam on desktop
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outsider.gonzo

Joined: 19 Mar 2011
Posts: 4
Location: Salzgitter/Germany
PostPosted: Thu 24 Mar 2011, 06:09    Post subject:  webcam on desktop  
hi,
i would receive a private webacam and that image should be on the desktop right side on the top.

i have seen a topic on a ubuntu website, but i have no idea where can i use it and how.

have anybody here an idea?

here is the link where i have found it(it's in German)

http://forum.ubuntuusers.de/topic/bild-auf-desktop-anzeigen-und-automatisch-akt/#post-1394767


ty for your help
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DPUP5520

Joined: 16 Feb 2011
Posts: 757
PostPosted: Thu 24 Mar 2011, 08:27    Post subject:  
If I translated that right I believe they are saying to create a script with that code which will automatically pull an image from wherever you choose every five minutes, which is in their case such as yours a home webcam.
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zigbert


Joined: 29 Mar 2006
Posts: 5241
Location: Valåmoen, Norway
PostPosted: Thu 24 Mar 2011, 13:35    Post subject:  
this command shows my webcam output.
Code:
mplayer -fps 30 -cache 128 -tv driver=v4l2:width=640:height=480:device=/dev/video0 tv://

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DPUP5520

Joined: 16 Feb 2011
Posts: 757
PostPosted: Thu 24 Mar 2011, 13:38    Post subject:  
@ zigbert

I believe he's talking about a IP cam
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zigbert


Joined: 29 Mar 2006
Posts: 5241
Location: Valåmoen, Norway
PostPosted: Thu 24 Mar 2011, 15:23    Post subject:  
Sorry.
Pwidgets-extra pack has a slideshow widget which uses xli to show images
Code:
xli -geometry +100+100 -gamma 2.2 /path/file.jpg

I guess the german script could be used for downloading the image.


Sigmund
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zigbert


Joined: 29 Mar 2006
Posts: 5241
Location: Valåmoen, Norway
PostPosted: Thu 24 Mar 2011, 16:26    Post subject:  
Here is an example. It's too simple since it
- has window decoration
- should be set to a layer below other windows
- views downloaded image in actual size




Code:
#!/bin/bash
DIR=$HOME/.pwebcam
IMAGE=http://www.hemnes.kommune.no/webcam/korgen.jpg

while [ "$N" != "1" ]; do
   wget -N --directory-prefix=$DIR --no-check-certificate $IMAGE
   xli -geometry +100+100 -gamma 2.2 -delay 5 $DIR/korgen.jpg &
   sleep 4
done

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zigbert


Joined: 29 Mar 2006
Posts: 5241
Location: Valåmoen, Norway
PostPosted: Thu 24 Mar 2011, 16:35    Post subject:  
This one doesn't make a new window each download, but updates the running window.
Code:

#!/bin/bash
DIR=$HOME/.pwebcam
IMAGE=http://www.hemnes.kommune.no/webcam/korgen.jpg
echo -n $DIR/korgen.jpg

xli -geometry +100+100 -gamma 2.2 -delay 5 -goto $DIR/korgen.jpg $DIR/*.jpg &

while [ "$N" != "1" ]; do
   wget -N --directory-prefix=$DIR --no-check-certificate $IMAGE
   sleep 5
done

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technosaurus


Joined: 18 May 2008
Posts: 3843
PostPosted: Thu 24 Mar 2011, 19:39    Post subject:  
has anyone been able to do this in such a way that it can be recorded and watched at the same time? tee + pipes maybe, or using x11grab on the stream window?
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zigbert


Joined: 29 Mar 2006
Posts: 5241
Location: Valåmoen, Norway
PostPosted: Fri 25 Mar 2011, 14:06    Post subject:  
Code:
#!/bin/bash

URL=http://www.hemnes.kommune.no/webcam/korgen.jpg

DIR=$HOME/.pwebcam
IMAGE_DIR=`dirname $URL`
IMAGE_BASE=`basename $URL`
echo -n $DIR/$IMAGE_BASE

xli -geometry +100+100 -gamma 2.2 -delay 1 -goto $DIR/$IMAGE_BASE $DIR/*.jpg &

while [ "$N" != "1" ]; do
   wget -N --directory-prefix=$DIR --no-check-certificate $URL
   ffmpeg -f image2 -i $DIR/$IMAGE_BASE -y $DIR/pwebcam.mpg
   cat $DIR/pwebcam.mpg >> $HOME/pwebcam.mpg
   sleep 1
done

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zigbert


Joined: 29 Mar 2006
Posts: 5241
Location: Valåmoen, Norway
PostPosted: Sun 27 Mar 2011, 05:16    Post subject:  
Here is a simple webcam viewer / recorder. You can control it from gui or commandline. The pet includes 'xli' as the viewer and 'resizepng' for scaling the downloaded image. These are not in Puppy by default. For recording it uses ffmpeg and that is already in you Puppy.


pwebcam-0.2.pet
Description 
pet

 Download 
Filename  pwebcam-0.2.pet 
Filesize  101.66 KB 
Downloaded  195 Time(s) 

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Last edited by zigbert on Wed 30 Mar 2011, 04:49; edited 1 time in total
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seaside

Joined: 11 Apr 2007
Posts: 832
PostPosted: Mon 28 Mar 2011, 16:49    Post subject:  
zigbert,

Very cool (I mean cold) webcam viewer Smile

You might move this code to just above the "while loop"

Code:
[ -f "$TARGETDIR/$IMAGE_NAME.mpg" ] && gxmessage "$TARGETDIR/$IMAGE_NAME.mpg already exist. Rename or move before continuing."


When record is true, the gxmessage keeps looping.

Can spring be far away there?

Cheers,
s
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zigbert


Joined: 29 Mar 2006
Posts: 5241
Location: Valåmoen, Norway
PostPosted: Wed 30 Mar 2011, 04:56    Post subject:  
seaside
Quote:
You might move this code to just above the "while loop"
Done.... I have made an actual use of it, and did some general fixing. Version 0.2 is uploaded 2 posts up.

Quote:
Can spring be far away there?
Hopefully not. Even I (who is a snow-lover) feels this winter has been a bit long. We've had snow since October, and there is still 1 meter left in the garden. Today it is snowing heavily.....


Sigmund
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