Hi,
Yipii ! I can now successfully record from my camera !
What helped was to modify the PipelineFactory.getBluecherryPipeline() method
like this:
(Class located in
/opt/matterhorn/capture-agent/matterhorn-source/modules/matterhorn-capture-agent-impl/src/main/java/org/opencastproject/capture/pipeline/PipelineFactory.java)
...
// added/modified the highlighted parts, by AK
fpsCaps = Caps.fromString("video/x-raw-rgb");
fpsfilter.setCaps(fpsCaps);
Element ffmpegcolorspace = ElementFactory.make("ffmpegcolorspace",
null);
pipeline.addMany(v4l2src, queue, videorate, fpsfilter, ffmpegcolorspace,
enc, muxer, filesink);
logger.info("Set rgb and colorspace by AK");
...
if (confidence) {
boolean trace =
Boolean.valueOf(properties.getProperty(CaptureParameters.CAPTURE_CONFIDENCE_DEBUG));
if (!VideoMonitoring.addVideoMonitor(pipeline, fpsfilter,
ffmpegcolorspace, interval, imageloc, device, trace)) {
logger.info("VideoMonitor wont match - AK");
error = formatPipelineError(captureDevice, fpsfilter,
ffmpegcolorspace);
}
} else {
if (!fpsfilter.link(ffmpegcolorspace))
error = formatPipelineError(captureDevice, fpsfilter,
ffmpegcolorspace);
}
if (!ffmpegcolorspace.link(enc))
error = formatPipelineError(captureDevice, ffmpegcolorspace, enc);
....
So, this part is solved after like 25 hours of research, trying and failing,
but thats just the way is is.
Thanks again for your hints and tricks !
Btw. if my camera.mpg shows fine now (fluent), but my screen.mpg seems to be
like on 2 pictures per second (sometimes), ie. the flow is usually not a
flow but sometimes a jump from picture to picture, what can I look at first
to detect/correct the cause, in your experience ? (example:
http://derpi.tuwien.ac.at/krieger/Screen.mpg )
Regards, Andreas
shinymonk wrote:
>
> Hi Greg, Adam, Ruben,
>
> Answers inline ;)
>
>>> The camera shows OK when starting VLC-Player after fresh boot of Ubuntu
>>> 10.4.1.LTS.
>>> Starting a simple capture results in a green capture with a very thin
>>> stripe
>>> on the top showing camera content (ie. contents change with the moving
>>> of
>>> the camera).
>>> And after that capture, VLC-Player won't display the camera anymore,
>>> instead
>>> we see the green picture described above.
>>This is a symptom of an incorrect standard setting (PAL vs NTSC)
>
>> When you installed the system, did it prompt you for the capture
>> standard? Which did you choose?
> I chose 5=PAL and 1=Composite0, and the file
> /opt/matterhorn/capture-agent/device_config.sh
> shows this, which I understand to be correct:
>
> #! /bin/bash
> v4l2-ctl -s 4 -d /dev/camera
> v4l2-ctl -d /dev/camera -i 0
>
>>> To me it seems, that the capture client somehow modifies the v4l2
>>> settings,
>>> since VLC shows OK before the capture, but bad after the capture. How
>>> can
>>> this be prevented or circumvented ?
>
>> So the card works correctly on bootup? There is a file at (by default)
>> /opt/matterhorn/capture-agent/device_config.sh which controls what the
>> camera is set to. If this file is blank then Matterhorn will not change
>> any v4l settings.
>
> The card works correctly directly after bootup, and even with matterhorn
> started (which happens on bootup):
> I can see video on VLC (v4l2://).
> But with starting a capture 2 things happen:
> 1. The capture is green (except for a thin line at the right upper corner
> showing moving content)
> 2. A subsequent call to VLC (v4l2://) also gives me a green picture.
>
> Only remedy atm is
> to switch over to NTSC (before capture) and then back to PAL (during
> capture) as mentioned in my previous post; then the capture will be all
> right (lest the few seconds in the beginngin NTSC was set)
>
> As posted in my answer to Ruben I confirm this to be Adam Mckenzie's issue
> https://opencast.jira.com/browse/MH-5404,
> and hope for some soon fix/workaround.
>
> ATM I'm checking the matterhorn Trunk version, whether it does any better,
> and will report on any success/failure.
> -> No, also green videos is all I see. Sigh.
>
> Greetings and lots of thanks for the detailed support and ideas, Andreas
>
--
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