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2009-11-19
, 15:32
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Posts: 168 |
Thanked: 265 times |
Joined on Oct 2009
@ London, UK
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#2
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Originally Posted by fabrice.desre
gst-launch v4l2camsrc device=/dev/video1 num-buffers=1 ! omx_jpegenc ! filesink location=test.jpg
hello,
I'm trying to build a gstreamer pipeline to take snapshots (only on picture) from the camera. I'd like one for the N810 and one for the N900.
On the N810, I came up with :
gst-launch v4l2src num-buffers=1 ! video/x-raw-rgb,width=640,height=480,framerate=8/1 ! ffmpegcolorspace ! jpegenc ! filesink location=test.jpg
The pipeline is executed as it should, but the jpeg file is a black frame... I tested v4l2src ! ffmpegcolorspace ! xvimagesink to check the camera hardware and it's ok.
For the N900, I'd be grateful for any help since I don't have this lovely device yet ;-)
Thanks,
Fabrice
works on the n900 and produces a 640x480 jpeg from the front camera.
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2009-11-19
, 17:00
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Posts: 2 |
Thanked: 1 time |
Joined on Nov 2009
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#3
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Originally Posted by zaheerm
Thanks !
gst-launch v4l2camsrc device=/dev/video1 num-buffers=1 ! omx_jpegenc ! filesink location=test.jpg
works on the n900 and produces a 640x480 jpeg from the front camera.
Can you confirm that scaling works with :
gst-launch v4l2camsrc device=/dev/video1 num-buffers=1 ! videoscale ! video/x-raw-yuv,width=475,height=356 ! omx_jpegenc ! filesink location=test.jpg
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2009-12-04
, 05:35
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Posts: 1 |
Thanked: 0 times |
Joined on Dec 2009
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#4
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This gst-launch invokation does not work for me. It produces:
I'm puzzled by this:
Would you have a suggestion? Thanks in advance.
--
Manuel
Code:
gst-launch v4l2camsrc device=/dev/video1 num-buffers =1 ! omx_jpegenc ! filesink location=test.jpg Setting pipeline to PAUSED ... Pipeline is live and does not need PREROLL ... Setting pipeline to PLAYING ... New clock: GstSystemClock ERROR: from element /GstPipeline:pipeline0/GstV4l2CamSrc:v4l2camsrc0: Timeout when trying to get video frames from device '/dev/video1'. Additional debug info: v4l2camsrc_calls.c(1549): gst_v4l2camsrc_grab_frame (): /GstPipeline:pipeline0/GstV4l2CamSrc:v4l2camsrc0 Execution ended after 3014404294 ns. Setting pipeline to PAUSED ... Setting pipeline to READY ... Setting pipeline to NULL ... Freeing pipeline ...
I'm puzzled by this:
Code:
GstV4l2CamSrc:v4l2camsrc0: Timeout when trying to get video
--
Manuel
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2010-03-01
, 17:13
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Posts: 3,203 |
Thanked: 1,391 times |
Joined on Nov 2009
@ Worthing, England
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#5
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Originally Posted by serrano
got the lens closed? src0 is the back camera
This gst-launch invokation does not work for me. It produces:
Code:gst-launch v4l2camsrc device=/dev/video1 num-buffers =1 ! omx_jpegenc ! filesink location=test.jpg Setting pipeline to PAUSED ... Pipeline is live and does not need PREROLL ... Setting pipeline to PLAYING ... New clock: GstSystemClock ERROR: from element /GstPipeline:pipeline0/GstV4l2CamSrc:v4l2camsrc0: Timeout when trying to get video frames from device '/dev/video1'. Additional debug info: v4l2camsrc_calls.c(1549): gst_v4l2camsrc_grab_frame (): /GstPipeline:pipeline0/GstV4l2CamSrc:v4l2camsrc0 Execution ended after 3014404294 ns. Setting pipeline to PAUSED ... Setting pipeline to READY ... Setting pipeline to NULL ... Freeing pipeline ...
I'm puzzled by this:
Would you have a suggestion? Thanks in advance.Code:GstV4l2CamSrc:v4l2camsrc0: Timeout when trying to get video
--
Manuel
Also i find jspjpegenc works better than omx_jpegenc
__________________
----------- Follow me on Twitter here
----------- My Photography Website and Blog is here
----------- Author of the N900 Health Check Application ----------- New Version in Extras Devel (Dec 2010 - 2.9.10)
----------- Are you on the N900 World Map? - http://pininthemap.com/maemo - masterpin: shotgun
----------- What apps do you want to see on the n900 or in MeeGo in the future? -
----------- Follow me on Twitter here
----------- My Photography Website and Blog is here
----------- Author of the N900 Health Check Application ----------- New Version in Extras Devel (Dec 2010 - 2.9.10)
----------- Are you on the N900 World Map? - http://pininthemap.com/maemo - masterpin: shotgun
----------- What apps do you want to see on the n900 or in MeeGo in the future? -
I'm trying to build a gstreamer pipeline to take snapshots (only on picture) from the camera. I'd like one for the N810 and one for the N900.
On the N810, I came up with :
gst-launch v4l2src num-buffers=1 ! video/x-raw-rgb,width=640,height=480,framerate=8/1 ! ffmpegcolorspace ! jpegenc ! filesink location=test.jpg
The pipeline is executed as it should, but the jpeg file is a black frame... I tested v4l2src ! ffmpegcolorspace ! xvimagesink to check the camera hardware and it's ok.
For the N900, I'd be grateful for any help since I don't have this lovely device yet ;-)
Thanks,
Fabrice