can anybody help me out?
thank you very much~
2012-02-15
ZENG SHAN
Tel,861088236837
E-mail,[email protected]
Computing Center
Institute of High Energy Physics,CAS
发件人：zengshan
发送时间：2012-02-14 11:44
主题：dural epiphan problems
收件人：Hank Magnuski,Rubén Pérez
抄送：matterhorn-users
Hi all，
I am now using two epiphan's VGA2USB devices to capture both video and ppt, but
when the CA start to capture, the log in CA shows that:
2012-02-14 11:27:08 INFO (GStreamerPipeline:430) - Successfully initialised 2
devices.
2012-02-14 11:27:09 INFO (GStreamerPipeline:96) - Initializing devices for
capture.
2012-02-14 11:27:09 INFO (EpiphanVGA2USBV4LSubDeviceBin:259) - Sending EOS to
stop /dev/video0_v4lsrc
2012-02-14 11:27:09 INFO (EpiphanVGA2USBV4LSubTestSrcBin:188) - Sending EOS to
stop videotestsrc0
2012-02-14 11:27:09 INFO (EpiphanVGA2USBV4LSubDeviceBin:259) - Sending EOS to
stop /dev/video1_v4lsrc
2012-02-14 11:27:09 INFO (EpiphanVGA2USBV4LSubTestSrcBin:188) - Sending EOS to
stop videotestsrc1
2012-02-14 11:27:09 WARN (GStreamerPipeline$2:144) - mpegpsmux0: Could not
create handler for stream:
So I use gst debug level 2 to see more, and it shows that:
matterhorn@capture:/opt/matterhorn/felix/conf$ gst-launch -e --gst-debug=2
v4lsrc device=/dev/video0
Setting pipeline to PAUSED ...
0:00:00.021649224 9240 0x7f9080 WARN v4l
v4lsrc_calls.c:489:gst_v4lsrc_try_capture:<v4lsrc0> error: system error: Wrong
medium type
0:00:00.023990750 9240 0x7f9080 WARN v4l
v4lsrc_calls.c:489:gst_v4lsrc_try_capture:<v4lsrc0> error: system error: Wrong
medium type
0:00:00.026393783 9240 0x7f9080 WARN v4l
v4lsrc_calls.c:489:gst_v4lsrc_try_capture:<v4lsrc0> error: system error: Wrong
medium type
0:00:00.032750484 9240 0x7f9080 WARN v4l
v4lsrc_calls.c:489:gst_v4lsrc_try_capture:<v4lsrc0> error: system error: Wrong
medium type
0:00:00.035141576 9240 0x7f9080 WARN v4l
v4lsrc_calls.c:489:gst_v4lsrc_try_capture:<v4lsrc0> error: system error: Wrong
medium type
0:00:00.036005793 9240 0x7f9080 WARN basesrc
gstbasesrc.c:2639:gst_base_src_default_negotiate:<v4lsrc0> error: No supported
formats found
0:00:00.036024839 9240 0x7f9080 WARN basesrc
gstbasesrc.c:2639:gst_base_src_default_negotiate:<v4lsrc0> error: This element
did not produce valid caps
Pipeline is live and does not need PREROLL ...
ERROR: from element /GstPipeline:pipeline0/GstV4lSrc:v4lsrc0: Could not
synchronize on resource.
Additional debug info:
v4lsrc_calls.c(489): gst_v4lsrc_try_capture ():
/GstPipeline:pipeline0/GstV4lSrc:v4lsrc0:
system error: Wrong medium type
ERROR: pipeline doesn't want to preroll.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...
matterhorn@capture:/opt/matterhorn/felix/conf$ gst-launch -e --gst-debug=2
v4lsrc device=/dev/video1
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
0:00:01.195766353 9243 0x17458c0 WARN basesrc
gstbasesrc.c:2550:gst_base_src_loop:<v4lsrc0> error: Internal data flow error.
0:00:01.195807301 9243 0x17458c0 WARN basesrc
gstbasesrc.c:2550:gst_base_src_loop:<v4lsrc0> error: streaming task paused,
reason not-linked (-1)
ERROR: from element /GstPipeline:pipeline0/GstV4lSrc:v4lsrc0: Internal data
flow error.
Additional debug info:
gstbasesrc.c(2550): gst_base_src_loop ():
/GstPipeline:pipeline0/GstV4lSrc:v4lsrc0:
streaming task paused, reason not-linked (-1)
Execution ended after 12849465 ns.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...
2012-02-14
ZENG SHAN
Tel,861088236837
E-mail,[email protected]
Computing Center
Institute of High Energy Physics,CAS
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