Front Camera of NOKIA N900 - Page 5 - maemo.org

Kieron | # 41 | 2010-11-10, 18:19 | Report

I'm having the same problem, but its dark with a hint of green. Can't see myself at all. Looks like I'm a special ops secret agent in night mode.

The Following User Says Thank You to Kieron For This Useful Post:
Wikiwide

mr id | # 42 | 2010-11-10, 18:42 | Report

Originally Posted by jprobichaud View Post

Hum, when I try this, I get

Which gst plugin do I need to get this videobalance pipeline available?

should be in plugins good.
gstreamer0.10-plugins-good

jprobichaud | # 43 | 2010-11-11, 20:47 | Report

Originally Posted by mr id View Post

should be in plugins good.
gstreamer0.10-plugins-good

Thanks, but it's already installed, "dpkg -l | grep gstreamer | grep good" gives:

Code:

ii  gstreamer0.10-plugins-good    0.10.16-git276-0maemo19+0m5  GStreamer plugins from the "good" set

Actually, "dpkg -l | grep gstreamer" returns:

Code:

ii  gstreamer-tools                        0.10.25-0maemo4+0m5
ii  gstreamer0.10-dsp                      0.7.0-0maemo2.4+0m5
ii  gstreamer0.10-ffmpeg                   0.10.9-2maemo2
ii  gstreamer0.10-flac                     0.10.15-0maemo3+0m5.tk1
ii  gstreamer0.10-flv                      0.10.23-0maemo2
ii  gstreamer0.10-gnomevfs                 0.10.25-0maemo14+0m5
ii  gstreamer0.10-hantro                   0.20050831.9-52+0m5
ii  gstreamer0.10-ipp-nokia                0.7-maemo1+0m5
ii  gstreamer0.10-mkv                      0.10.16-0maemo5
ii  gstreamer0.10-mpegaudioparse-maemo     0.11+0m5
ii  gstreamer0.10-musepack                 0.10.19-maemo2
ii  gstreamer0.10-nokia-speech             1.0-0maemo11+0m5
ii  gstreamer0.10-ogg                      0.10.23-0maemo4+0m5-tk1
ii  gstreamer0.10-openmax                  0.10.0.6~1-0maemo17.1+0m5
ii  gstreamer0.10-plugins-bad              0.10.14-git265-0maemo10+0m5
ii  gstreamer0.10-plugins-bad-extra        0.10.14-git265-0maemo10+0m5
ii  gstreamer0.10-plugins-base             0.10.25-0maemo14+0m5
ii  gstreamer0.10-plugins-camera           0.79-1+0m5
ii  gstreamer0.10-plugins-good             0.10.16-git276-0maemo19+0m5
ii  gstreamer0.10-plugins-ugly-multiverse  0.10.7-2maemo1
ii  gstreamer0.10-pocketsphinx             0.6.1-1
ii  gstreamer0.10-rm                       0.10.14.2-1maemo2-1
ii  gstreamer0.10-theora                   0.10.23-0maemo4+0m5-tk1
ii  gstreamer0.10-tools                    0.10.25-0maemo4+0m5
ii  gstreamer0.10-vorbis                   0.10.23-0maemo4+0m5-tk1
ii  gstreamer0.10-vp8                      0.10.18-0maemo1
ii  gstreamer0.10-wma                      0.32+0m5
ii  gstreamer0.10-x                        0.10.25-0maemo14+0m5
ii  kmplayer                               0.10.5.900-1
ii  libgstreamer-plugins-base0.10-0        0.10.25-0maemo14+0m5
ii  libgstreamer0.10-0                     0.10.25-0maemo4+0m5
ii  libgstreamermm-0.10-2                  0.10.2-maemo1
ii  libnice-gstreamer0.10                  1:0.0.9-0maemo10+0m5

Is something else's missing or conflicting?

daperl | # 44 | 2010-11-11, 21:14 | Report

Originally Posted by kieron View Post

Looks like i'm a special ops secret agent in night mode after a bong hit.

TFTFY

the end

The Following User Says Thank You to daperl For This Useful Post:
Kieron

jprobichaud | # 45 | 2010-11-11, 21:26 | Report

Originally Posted by mr id View Post

should be in plugins good.
gstreamer0.10-plugins-good

Ah, I've found it: I need to install gstreamer0.10-plugins-good-extra for the video balance pipeline to be present...

Now, the following command line works, but the video is still of an ugly green...

Code:

gst-launch v4l2src device=/dev/video1 ! ffmpegcolorspace ! videobalance brightness=0.5 contrast=1.2 ! autovideosink

It's time to experiment with the other settings...

Thanks again!

The Following 3 Users Say Thank You to jprobichaud For This Useful Post:
ILikeMaemo, mr id, Wikiwide

nicolai | # 46 | 2010-11-12, 01:27 | Report

try to change the gamma value.

nicolai

TheBootroo | # 47 | 2010-11-13, 15:22 | Report

i can make the app UI if you want : i'm Qt4 dev

but i need someone who really knows all gst and v4l2 trick to do the hard part : configure and retrieve the image from the cam.

The Following 3 Users Say Thank You to TheBootroo For This Useful Post:
esthreel, Thalass, Wikiwide

jprobichaud | # 48 | 2010-11-15, 15:26 | Report

hum, thanks for the hint nicolai. Playing with hue and gamma, I can get a picture that is "understandable", but it seems that a lot of experimentation that is still needed in order to get a "good" picture...

Stopping and restarting gstreamer (from gst-launch) each time one wants to try with a different value seems inefficient at best. Is there a way to change the pipeline values *while* gstreamer is running?

Saturn | # 49 | 2010-11-16, 00:52 | Report

Originally Posted by jprobichaud View Post

hum, thanks for the hint nicolai. Playing with hue and gamma, I can get a picture that is "understandable", but it seems that a lot of experimentation that is still needed in order to get a "good" picture...

Stopping and restarting gstreamer (from gst-launch) each time one wants to try with a different value seems inefficient at best. Is there a way to change the pipeline values *while* gstreamer is running?

Hi, are you experimenting to get a better picture or video from the front camera?

If you get a command that gets a better pic then please post, as it will be quite useful for many apps.

Cheers

kev | # 50 | 2010-12-05, 14:53 | Report

All videobalance options

http://www.gstreamer.net/data/doc/gs...eobalance.html