Hi Luis,
There are a couple of things you can do to try to get more information about
your device.
Could you run
"v4l-info /dev/video0"
This will spit out a lot of information but the key part is the video capture
part. For example I have a camera that outputs motion jpeg and the output of
the video capture looks like this:
video capture
VIDIOC_ENUM_FMT(0,VIDEO_CAPTURE)
index : 0
type : VIDEO_CAPTURE
flags : 0
description : "YUV 4:2:2 (YUYV)"
pixelformat : 0x56595559 [YUYV]
VIDIOC_ENUM_FMT(1,VIDEO_CAPTURE)
index : 1
type : VIDEO_CAPTURE
flags : 1
description : "MJPEG"
pixelformat : 0x47504a4d [MJPG]
Could you attach the whole output to your reply so that I can perhaps change
the custom pipeline for your particular device.
If it does say that it uses h264 could you run
"gst-inspect ffdec_h264"
If it complains that the gstreamer-tools are not installed could you install
them with
"sudo apt-get install gstreamer-tools"
You need this element to actually decode 264 streams in case your webcam
actually outputs x264. If it isn't installed and complains it is missing you
might need to run:
"sudo apt-get install gstreamer0.10-ffmpeg"
To enable it and try the custom pipeline again.
Thanks,
Adam
Adam McKenzie
Programmer Analyst, Education Applications
Client Services, Information and Communications Technology
Ph: (306) 966-8241
[Description: Description: Description: Description:
cid:[email protected]] <http://www.usask.ca/>
________________________________
From: [email protected]
[[email protected]] on behalf of Luis Galeana
[[email protected]]
Sent: Wednesday, August 01, 2012 6:29 PM
To: Matterhorn Users
Subject: Re: [Matterhorn-users] Capture Agent pipeline
Hi, Adam,
I changed my configuration to what you said, but I still get the internal
error message. The log is below. Is there any information that could help
determine the cause of the failure?
Log:
----------------------------
...
20:19:47 INFO (GStreamerPipeline:430) - Successfully initialised 2 devices.
20:19:47 INFO (CustomVideoProducer:73) - Custom Video Producer is using
Pipeline: "v4l2src device=/dev/video0 ! queue ! decodebin ! queue"
20:19:48 INFO (GStreamerPipeline:96) - Initializing devices for capture.
20:19:51 INFO (ProducerBin:121) - Sending EOS to stop v4l2src0
20:19:51 WARN (GStreamerPipeline$2:144) - v4l2src0: Internal data flow error.
20:19:51 INFO (ProducerBin:121) - Sending EOS to stop alsasrc0
20:19:54 INFO (AgentStateJob:190) - #7 - State push to
org.opencastproject.capture.impl.jobs.AgentStateJob@5d59d625 to
http://localhost:8080/capture-admin/agents/Galeana failed with code 405.
20:19:54 INFO (AgentConfigurationJob:121) - #7 - Capabilities push to
http://localhost:8080/capture-admin/agents/Galeana/configuration failed with
code 405.
20:19:54 INFO (AgentStateJob:190) - #7 - State push to
org.opencastproject.capture.impl.jobs.AgentStateJob@5d59d625 to
http://localhost:8080/capture-admin/recordings/Unscheduled-Galeana-1343866787387
failed with code 405.
...
20:20:51 ERROR (CaptureAgentImpl:339) - Unable to start pipeline after 5
seconds. Aborting!
---------------------------------------
Thanks!
Luis Galeana.
2012/8/1 McKenzie, Adam <[email protected]<mailto:[email protected]>>
Hi Luis,
I noticed in your log that it stated the problem is “Internal data flow error”
which combined with your comment earlier that your webcam captures in h264
might be the culprit. Could you try changing your webcam capture device
settings to:
capture.device.Webcam.type=CUSTOM_VIDEO_SRC
capture.device.Webcam.flavor=presenter/source
capture.device.Webcam.outputfile=Webcam.mpg
capture.device.Webcam.src=/dev/video0
capture.device.Webcam.customProducer=v4l2src device=/dev/video0 ! queue !
decodebin ! queue
The type CUSTOM_VIDEO_SRC specifies that you want to write your own gstreamer
magic. The customProducer property is the actual gstreamer line that it will
run when it tries to capture from your webcam. Each of the elements in the
pipeline are separated with exclamation points “!”. The “v4l2src
device=/dev/video0” part just tells it to capture from the video 4 linux 2
device located at /dev/video0. The queues are just in case your system needs a
bit of a buffer to process and decode the video. Finally the “decodebin” part
is a gstreamer element that will try to determine what is coming in, attach the
correct decoder and pass on raw frames for the rest of the pipeline. Please let
me know if anything else is unclear.
Cheers,
Adam
Adam McKenzie
ITS, University of Saskatchewan
Rm 61 Physics, 116 Science Place
Saskatoon SK S7N 5E2 Canada
(306) 966-8241<tel:%28306%29%20966-8241>
From:
[email protected]<mailto:[email protected]>
[mailto:[email protected]<mailto:[email protected]>]
On Behalf Of Luis Galeana
Sent: Wednesday, August 01, 2012 9:29 AM
To: Matterhorn Users
Subject: Re: [Matterhorn-users] Capture Agent pipeline
Hi again,
Below is my device configuration and I'm getting some internal error... The
log is at the end. What do you think that could be the problem?
#Create the presenter capture
capture.device.Webcam.type=V4L2SRC
capture.device.Webcam.flavor=presenter/source
capture.device.Webcam.outputfile=Webcam.mpg
capture.device.Webcam.src=/dev/video0
#Create the audio capture
capture.device.test.src=hw:0
capture.device.test.outputfile=test.mp2
capture.device.test.flavor=presenter/source
capture.device.test.buffer.bytes=536870912
capture.device.names=Webcam, test
Log:
------------------
21:55:41 INFO (AgentStateJob:190) - #4 - State push to
org.opencastproject.capture.impl.jobs.AgentStateJob@2e647edd<mailto:org.opencastproject.capture.impl.jobs.AgentStateJob@2e647edd>
to http://localhost:8080/capture-admin/agents/Galeana failed with code 405.
21:55:41 INFO (AgentConfigurationJob:121) - #4 - Capabilities push to
http://localhost:8080/capture-admin/agents/Galeana/configuration failed with
code 405.
21:55:44 INFO (GStreamerPipeline:430) - Successfully initialised 2 devices.
21:55:45 INFO (GStreamerPipeline:96) - Initializing devices for capture.
21:55:48 INFO (ProducerBin:121) - Sending EOS to stop v4l2src0
21:55:48 INFO (ProducerBin:121) - Sending EOS to stop alsasrc0
21:55:48 WARN (GStreamerPipeline$2:144) - v4l2src0: Internal data flow error.
21:55:51 INFO (AgentStateJob:190) - #5 - State push to
org.opencastproject.capture.impl.jobs.AgentStateJob@7a7683b1<mailto:org.opencastproject.capture.impl.jobs.AgentStateJob@7a7683b1>
to http://localhost:8080/capture-admin/agents/Galeana failed with code 405.
21:55:51 INFO (AgentConfigurationJob:121) - #5 - Capabilities push to
http://localhost:8080/capture-admin/agents/Galeana/configuration failed with
code 405.
21:55:51 INFO (AgentStateJob:190) - #5 - State push to
org.opencastproject.capture.impl.jobs.AgentStateJob@7a7683b1<mailto:org.opencastproject.capture.impl.jobs.AgentStateJob@7a7683b1>
to
http://localhost:8080/capture-admin/recordings/Unscheduled-Galeana-1343699744653
failed with code 405.
...
21:56:48 ERROR (CaptureAgentImpl:339) - Unable to start pipeline after 5
seconds. Aborting!
-------------------
P.S. I couldn't fix the push and capabilities errors. Could you elaborate a
little bit on what I should do? I see that both config.properties files - the
core and the capture agent - have the same url, as well as the
org.opencastproject.capture.core.url.
Thanks a lot!!
Luis Galeana.
_______________________________________________
Matterhorn-users mailing list
[email protected]<mailto:[email protected]>
http://lists.opencastproject.org/mailman/listinfo/matterhorn-users
_______________________________________________
Matterhorn-users mailing list
[email protected]
http://lists.opencastproject.org/mailman/listinfo/matterhorn-users
