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[joshuajon]

Motion is cool, but doesn't seem to provide v4l.  Any more ideas?

*update*

Okay, so v4l is a kernel module.  I don't have it, but maybe it's included in some of the newer versions.

[markhadman]

OK, so how does the sugar Record activity grab video? Can we use another method to grab photos/video, without sugar/record/journal?

[markhadman]

Actually, it looks like GStreamer is the key

see http://wiki.laptop.org/go/Programming_the_camera

Might not work with Mplayer, but that's not really the point. The point is GStreamer can be used to chain together different devices, plug-ins and files, like this:

Code:

gst-launch-0.10 v4l2src ! ffmpegcolorspace ! pngenc ! filesink location=foo.png

or

Code:

gst-launch-0.10 v4l2src ! ffmpegcolorspace ! ximagesink

IMPORTANT NOTE: those 'pipes' are exclamation marks, NOT the vertical bar that you normally use to pipe shell commands together.

Let's have some fun!

[scrub]

I set up a script to take a picture and display it using qiv (which I installed as root using yum install qiv).  You'll have to make a directory named pics under your olpc home directory, and make a file in there named number.txt with just the number 0 in it. 

My script has:

blah=`cat /home/olpc/pics/number.txt`
blah2=`expr $blah + 1`
gst-launch v4l2src ! ffmpegcolorspace ! pngenc ! filesink location=/home/olpc/pics/pic$blah2.png
echo $blah2 > /home/olpc/pics/number.txt
qiv /home/olpc/pics/pic$blah2.png /home/olpc/pics/*.png

I bound alt-p to run that script, so when I press alt-p the laptop takes a picture and save it to the pics directory with a unique file name, then displays the photo in qiv.

Enjoy!
Scrub

[brisalta]

Actually, it looks like GStreamer is the key

see http://wiki.laptop.org/go/Programming_the_camera

Might not work with Mplayer, but that's not really the point. The point is GStreamer can be used to chain together different devices, plug-ins and files, like this:

Code:

gst-launch-0.10 v4l2src ! ffmpegcolorspace ! pngenc ! filesink location=foo.png

or

Code:

gst-launch-0.10 v4l2src ! ffmpegcolorspace ! ximagesink

IMPORTANT NOTE: those 'pipes' are exclamation marks, NOT the vertical bar that you normally use to pipe shell commands together.

Let's have some fun!

 I have been wondering why people have been messing with Mplayer when totem is already installed?  Totem uses gstreamer.  I was actually thinking of doing this with totem and downloading the additional codecs and plugins for it and creating a sugar wrapper

[markhadman]

I have been wondering why people have been messing with Mplayer when totem is already installed?  Totem uses gstreamer.  I was actually thinking of doing this with totem and downloading the additional codecs and plugins for it and creating a sugar wrapper

   
I'm not sure people are aware of gstreamer! I hadn't heard of it until yesterday, and it doesn't seem to be particularly well documented yet. any good e-books out there?

[brisalta]

I have been wondering why people have been messing with Mplayer when totem is already installed?  Totem uses gstreamer.  I was actually thinking of doing this with totem and downloading the additional codecs and plugins for it and creating a sugar wrapper

   
I'm not sure people are aware of gstreamer! I hadn't heard of it until yesterday, and it doesn't seem to be particularly well documented yet. any good e-books out there?

There is a ton of information on both totem and gstreamer at their web sites. http://www.gnome.org/projects/totem/ has information on totem and gstreamer including how to create debug output.  Also links to the gstreamer website.