на 5-м левеле слишком много инфы... вот что пишет на 3-м когда видео не запускается:
veo@veo-laptop:~$ gst-launch-0.10 v4l2src ! video/x-raw-yuv, width=640, height=480 ! xvimagesink --gst-debug-level=3
0:00:00.002962869 7677 0x81ba050 INFO GST_INIT gstquery.c:103:_gst_query_initialize: init queries
0:00:00.004917791 7677 0x81ba050 INFO GST_INIT gstmessage.c:73:_gst_message_initialize: init messages
0:00:00.005894519 7677 0x81ba050 INFO GST_PLUGIN_LOADING gstplugin.c:259:_gst_plugin_initialize: registering 0 static plugins
0:00:00.006348277 7677 0x81ba050 INFO GST_PLUGIN_LOADING gstplugin.c:244:gst_plugin_register_static: registered static plugin "staticelements"
0:00:00.006395769 7677 0x81ba050 INFO GST_PLUGIN_LOADING gstplugin.c:246:gst_plugin_register_static: added static plugin "staticelements", result: 1
0:00:00.007593404 7677 0x81ba050 INFO GST_INIT gst.c:913:ensure_current_registry: reading registry cache: /home/veo/.gstreamer-0.10/registry.i486.bin
0:00:00.044961469 7677 0x81ba050 INFO GST_REGISTRY gstregistrybinary.c:1242:gst_registry_binary_read_cache: loaded /home/veo/.gstreamer-0.10/registry.i486.bin in 0.037265 seconds
0:00:00.046059232 7678 0x81ba050 INFO GST_INIT gst.c:673:scan_and_update_registry: Validating registry cache: /home/veo/.gstreamer-0.10/registry.i486.bin
0:00:00.118249793 7678 0x81ba050 INFO GST_INIT gst.c:750:scan_and_update_registry: Registry cache has not changed
0:00:00.118563799 7677 0x81ba050 INFO GST_INIT gst.c:956:ensure_current_registry: registry reading and updating done, result = 1
0:00:00.118643069 7677 0x81ba050 INFO GST_PIPELINE gstparse.c:291:gst_parse_launch_full: parsing pipeline description 'v4l2src ! video/x-raw-yuv, width=640, height=480 ! xvimagesink '
0:00:00.142868574 7677 0x81ba050 INFO GST_PLUGIN_LOADING gstplugin.c:632:gst_plugin_load_file: plugin "/usr/lib/gstreamer-0.10/libgstvideo4linux2.so" loaded
0:00:00.142945050 7677 0x81ba050 INFO GST_ELEMENT_FACTORY gstelementfactory.c:399:gst_element_factory_create: creating element "v4l2src"
0:00:00.143028999 7677 0x81ba050 INFO GST_ELEMENT_PADS gstelement.c:639:gst_element_add_pad:<GstBaseSrc@0x82a4010> adding pad 'src'
0:00:00.152523199 7677 0x81ba050 INFO GST_PLUGIN_LOADING gstplugin.c:632:gst_plugin_load_file: plugin "/usr/lib/gstreamer-0.10/libgstxvimagesink.so" loaded
0:00:00.152575160 7677 0x81ba050 INFO GST_ELEMENT_FACTORY gstelementfactory.c:399:gst_element_factory_create: creating element "xvimagesink"
0:00:00.152650240 7677 0x81ba050 INFO GST_ELEMENT_PADS gstelement.c:639:gst_element_add_pad:<GstBaseSink@0x82a8080> adding pad 'sink'
0:00:00.152799420 7677 0x81ba050 INFO GST_ELEMENT_FACTORY gstelementfactory.c:399:gst_element_factory_create: creating element "pipeline"
0:00:00.152881763 7677 0x81ba050 INFO GST_PIPELINE ./grammar.y:478:gst_parse_perform_link: linking v4l2src0:(any) to xvimagesink0:(any) (0/0) with caps "video/x-raw-yuv, width=(int)640, height=(int)480"
0:00:00.154752108 7677 0x81ba050 INFO GST_PLUGIN_LOADING gstplugin.c:632:gst_plugin_load_file: plugin "/usr/lib/gstreamer-0.10/libgstcoreelements.so" loaded
0:00:00.154796597 7677 0x81ba050 INFO GST_ELEMENT_FACTORY gstelementfactory.c:399:gst_element_factory_create: creating element "capsfilter"
0:00:00.154860501 7677 0x81ba050 INFO GST_ELEMENT_PADS gstelement.c:639:gst_element_add_pad:<GstBaseTransform@0x82b20a0> adding pad 'sink'
0:00:00.154902057 7677 0x81ba050 INFO GST_ELEMENT_PADS gstelement.c:639:gst_element_add_pad:<GstBaseTransform@0x82b20a0> adding pad 'src'
0:00:00.154934393 7677 0x81ba050 INFO GST_STATES gstbin.c:1542:gst_bin_get_state_func:<pipeline0> getting state
0:00:00.154971409 7677 0x81ba050 INFO GST_STATES gstelement.c:2150:gst_element_continue_state:<capsfilter0> completed state change to NULL
0:00:00.155006679 7677 0x81ba050 INFO GST_ELEMENT_PADS gstutils.c:1368:gst_element_link_pads: trying to link element v4l2src0:(any) to element capsfilter0:sink
0:00:00.155026304 7677 0x81ba050 INFO GST_ELEMENT_PADS gstelement.c:885:gst_element_get_static_pad: found pad capsfilter0:sink
0:00:00.155044812 7677 0x81ba050 INFO GST_PADS gstutils.c:1273:prepare_link_maybe_ghosting: v4l2src0 and capsfilter0 in same bin, no need for ghost pads
0:00:00.155062831 7677 0x81ba050 INFO GST_PADS gstpad.c:1796:gst_pad_link_prepare: trying to link v4l2src0:src and capsfilter0:sink
0:00:00.156495202 7677 0x81ba050 INFO GST_PADS gstpad.c:1933:gst_pad_link: linked v4l2src0:src and capsfilter0:sink, successful
0:00:00.156523558 7677 0x81ba050 INFO GST_ELEMENT_PADS gstutils.c:1368:gst_element_link_pads: trying to link element capsfilter0:src to element xvimagesink0:(any)
0:00:00.156542764 7677 0x81ba050 INFO GST_ELEMENT_PADS gstelement.c:885:gst_element_get_static_pad: found pad capsfilter0:src
0:00:00.156560015 7677 0x81ba050 INFO GST_PADS gstutils.c:2063:gst_pad_can_link: trying to link capsfilter0:src and xvimagesink0:sink
0:00:00.156575869 7677 0x81ba050 INFO GST_PADS gstutils.c:1273:prepare_link_maybe_ghosting: capsfilter0 and xvimagesink0 in same bin, no need for ghost pads
0:00:00.156590954 7677 0x81ba050 INFO GST_PADS gstpad.c:1796:gst_pad_link_prepare: trying to link capsfilter0:src and xvimagesink0:sink
0:00:00.158289979 7677 0x81ba050 INFO GST_PADS gstpad.c:1933:gst_pad_link: linked capsfilter0:src and xvimagesink0:sink, successful
Setting pipeline to PAUSED ...
0:00:00.184413556 7677 0x81ba050 INFO GST_STATES gstelement.c:2150:gst_element_continue_state:<xvimagesink0> completed state change to READY
0:00:00.201407713 7677 0x81ba050 INFO GST_STATES gstelement.c:2163:gst_element_continue_state:<xvimagesink0> posting state-changed NULL to READY
0:00:00.201494176 7677 0x81ba050 INFO GST_STATES gstbin.c:2194:gst_bin_change_state_func:<pipeline0> child 'xvimagesink0' changed state to 2(READY) successfully
0:00:00.201535871 7677 0x81ba050 INFO GST_STATES gstelement.c:2150:gst_element_continue_state:<capsfilter0> completed state change to READY
0:00:00.201559896 7677 0x81ba050 INFO GST_STATES gstelement.c:2163:gst_element_continue_state:<capsfilter0> posting state-changed NULL to READY
0:00:00.201592373 7677 0x81ba050 INFO GST_STATES gstbin.c:2194:gst_bin_change_state_func:<pipeline0> child 'capsfilter0' changed state to 2(READY) successfully
0:00:00.201623242 7677 0x81ba050 INFO GST_STATES gstelement.c:2150:gst_element_continue_state:<v4l2src0> completed state change to READY
0:00:00.201645452 7677 0x81ba050 INFO GST_STATES gstelement.c:2163:gst_element_continue_state:<v4l2src0> posting state-changed NULL to READY
0:00:00.201675693 7677 0x81ba050 INFO GST_STATES gstbin.c:2194:gst_bin_change_state_func:<pipeline0> child 'v4l2src0' changed state to 2(READY) successfully
0:00:00.201714106 7677 0x81ba050 INFO GST_STATES gstelement.c:2123:gst_element_continue_state:<pipeline0> committing state from NULL to READY, pending PAUSED
0:00:00.201745534 7677 0x81ba050 INFO GST_STATES gstelement.c:2132:gst_element_continue_state:<pipeline0> continue state change READY to PAUSED, final PAUSED
0:00:00.201826620 7677 0x81ba050 INFO GST_STATES gstbin.c:2200:gst_bin_change_state_func:<pipeline0> child 'xvimagesink0' is changing state asynchronously to PAUSED
0:00:00.201865312 7677 0x81ba050 INFO GST_STATES gstelement.c:2150:gst_element_continue_state:<capsfilter0> completed state change to PAUSED
0:00:00.201888918 7677 0x81ba050 INFO GST_STATES gstelement.c:2163:gst_element_continue_state:<capsfilter0> posting state-changed READY to PAUSED
0:00:00.201920346 7677 0x81ba050 INFO GST_STATES gstbin.c:2194:gst_bin_change_state_func:<pipeline0> child 'capsfilter0' changed state to 3(PAUSED) successfully
0:00:00.230018750 7677 0x81ba050 INFO v4l2 v4l2_calls.c:454:gst_v4l2_open:<v4l2src0> Opened device 'Acer CrystalEye webcam' (/dev/video0) successfully
0:00:00.231026558 7677 0x81ba050 INFO v4l2src gstv4l2src.c:878:gst_v4l2src_get_caps:<v4l2src0> probed caps: video/x-raw-yuv, format=(fourcc)YUY2, width=(int)160, height=(int)120, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-yuv, format=(fourcc)YUY2, width=(int)176, height=(int)144, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-yuv, format=(fourcc)YUY2, width=(int)320, height=(int)240, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-yuv, format=(fourcc)YUY2, width=(int)352, height=(int)288, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-yuv, format=(fourcc)YUY2, width=(int)640, height=(int)480, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-yuv, format=(fourcc)I420, width=(int)160, height=(int)120, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-yuv, format=(fourcc)I420, width=(int)176, height=(int)144, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-yuv, format=(fourcc)I420, width=(int)320, height=(int)240, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-yuv, format=(fourcc)I420, width=(int)352, height=(int)288, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-yuv, format=(fourcc)I420, width=(int)640, height=(int)480, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-yuv, format=(fourcc)YV12, width=(int)160, height=(int)120, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-yuv, format=(fourcc)YV12, width=(int)176, height=(int)144, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-yuv, format=(fourcc)YV12, width=(int)320, height=(int)240, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-yuv, format=(fourcc)YV12, width=(int)352, height=(int)288, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-yuv, format=(fourcc)YV12, width=(int)640, height=(int)480, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-rgb, bpp=(int)24, depth=(int)24, red_mask=(int)255, green_mask=(int)65280, blue_mask=(int)16711680, endianness=(int)4321, width=(int)160, height=(int)120, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-rgb, bpp=(int)24, depth=(int)24, red_mask=(int)255, green_mask=(int)65280, blue_mask=(int)16711680, endianness=(int)4321, width=(int)176, height=(int)144, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-rgb, bpp=(int)24, depth=(int)24, red_mask=(int)255, green_mask=(int)65280, blue_mask=(int)16711680, endianness=(int)4321, width=(int)320, height=(int)240, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-rgb, bpp=(int)24, depth=(int)24, red_mask=(int)255, green_mask=(int)65280, blue_mask=(int)16711680, endianness=(int)4321, width=(int)352, height=(int)288, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-rgb, bpp=(int)24, depth=(int)24, red_mask=(int)255, green_mask=(int)65280, blue_mask=(int)16711680, endianness=(int)4321, width=(int)640, height=(int)480, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-rgb, bpp=(int)24, depth=(int)24, red_mask=(int)16711680, green_mask=(int)65280, blue_mask=(int)255, endianness=(int)4321, width=(int)160, height=(int)120, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-rgb, bpp=(int)24, depth=(int)24, red_mask=(int)16711680, green_mask=(int)65280, blue_mask=(int)255, endianness=(int)4321, width=(int)176, height=(int)144, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-rgb, bpp=(int)24, depth=(int)24, red_mask=(int)16711680, green_mask=(int)65280, blue_mask=(int)255, endianness=(int)4321, width=(int)320, height=(int)240, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-rgb, bpp=(int)24, depth=(int)24, red_mask=(int)16711680, green_mask=(int)65280, blue_mask=(int)255, endianness=(int)4321, width=(int)352, height=(int)288, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }; video/x-raw-rgb, bpp=(int)24, depth=(int)24, red_mask=(int)16711680, green_mask=(int)65280, blue_mask=(int)255, endianness=(int)4321, width=(int)640, height=(int)480, framerate=(fraction){ 30/1, 20/1, 15/1, 10/1, 5/1, 1/1 }
0:00:00.240692078 7677 0x81ba050 INFO v4l2src v4l2src_calls.c:1364:gst_v4l2src_capture_init:<v4l2src0> capturing buffers via mmap()
libv4l2: error turning on stream: Protocol error
0:00:00.445031580 7677 0x81ba050 WARN v4l2src v4l2src_calls.c:1454:gst_v4l2src_capture_start:<v4l2src0> error: Error starting streaming capture from device '/dev/video0'.
0:00:00.445082564 7677 0x81ba050 WARN v4l2src v4l2src_calls.c:1454:gst_v4l2src_capture_start:<v4l2src0> error: system error: Protocol error
0:00:00.445202830 7677 0x81ba050 INFO GST_ERROR_SYSTEM gstelement.c:1675:gst_element_message_full:<v4l2src0> posting message: Error starting streaming capture from device '/dev/video0'.
0:00:00.445287897 7677 0x81ba050 INFO GST_ERROR_SYSTEM gstelement.c:1698:gst_element_message_full:<v4l2src0> posted error message: Error starting streaming capture from device '/dev/video0'.
0:00:00.445366747 7677 0x81ba050 INFO GST_EVENT gstevent.c:557:gst_event_new_new_segment_full: creating newsegment update 0, rate 1.000000, format GST_FORMAT_TIME, start 0:00:00.000000000, stop 99:99:99.999999999, position 0:00:00.000000000
0:00:00.445614753 7677 0x81ba050 INFO GST_STATES gstelement.c:2150:gst_element_continue_state:<v4l2src0> completed state change to PAUSED
0:00:00.445707572 7677 0x81ba050 INFO GST_STATES gstelement.c:2163:gst_element_continue_state:<v4l2src0> posting state-changed READY to PAUSED
0:00:00.445765540 7677 0x81ba050 INFO GST_STATES gstbin.c:2215:gst_bin_change_state_func:<pipeline0> child 'v4l2src0' changed state to 3(PAUSED) successfully without preroll
0:00:00.445828886 7677 0x81ba050 INFO GST_STATES gstelement.c:2150:gst_element_continue_state:<pipeline0> completed state change to PAUSED
0:00:00.445866530 7677 0x81ba050 INFO GST_STATES gstelement.c:2163:gst_element_continue_state:<pipeline0> posting state-changed READY to PAUSED
Pipeline is live and does not need PREROLL ...
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Error starting streaming capture from device '/dev/video0'.
Additional debug info:
v4l2src_calls.c(1454): gst_v4l2src_capture_start (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
system error: Protocol error
ERROR: pipeline doesn't want to preroll.
Setting pipeline to PAUSED ...
0:00:00.446552929 7677 0x81ba050 INFO GST_STATES gstbin.c:2200:gst_bin_change_state_func:<pipeline0> child 'xvimagesink0' is changing state asynchronously to PAUSED
0:00:00.446610059 7677 0x81ba050 INFO GST_STATES gstelement.c:2150:gst_element_continue_state:<capsfilter0> completed state change to PAUSED
0:00:00.446647563 7677 0x81ba050 INFO GST_STATES gstbin.c:2194:gst_bin_change_state_func:<pipeline0> child 'capsfilter0' changed state to 3(PAUSED) successfully
0:00:00.446692471 7677 0x81ba050 INFO GST_STATES gstelement.c:2150:gst_element_continue_state:<v4l2src0> completed state change to PAUSED
0:00:00.446730325 7677 0x81ba050 INFO GST_STATES gstbin.c:2215:gst_bin_change_state_func:<pipeline0> child 'v4l2src0' changed state to 3(PAUSED) successfully without preroll
0:00:00.446771811 7677 0x81ba050 INFO GST_STATES gstelement.c:2150:gst_element_continue_state:<pipeline0> completed state change to PAUSED
Setting pipeline to READY ...
0:00:00.446894661 7677 0x81ba050 INFO GST_STATES gstelement.c:2150:gst_element_continue_state:<xvimagesink0> completed state change to READY
0:00:00.446940617 7677 0x81ba050 INFO GST_STATES gstelement.c:2163:gst_element_continue_state:<xvimagesink0> posting state-changed READY to READY
0:00:00.446993067 7677 0x81ba050 INFO GST_STATES gstbin.c:2194:gst_bin_change_state_func:<pipeline0> child 'xvimagesink0' changed state to 2(READY) successfully
0:00:00.447055645 7677 0x81ba050 INFO GST_STATES gstelement.c:2150:gst_element_continue_state:<capsfilter0> completed state change to READY
0:00:00.447089658 7677 0x81ba050 INFO GST_STATES gstelement.c:2163:gst_element_continue_state:<capsfilter0> posting state-changed PAUSED to READY
0:00:00.447136102 7677 0x81ba050 INFO GST_STATES gstbin.c:2194:gst_bin_change_state_func:<pipeline0> child 'capsfilter0' changed state to 2(READY) successfully
0:00:00.447228292 7677 0x82bebd0 INFO basesrc gstbasesrc.c:2097:gst_base_src_loop:<v4l2src0> pausing after gst_base_src_get_range() = wrong-state
0:00:00.812516555 7677 0x81ba050 INFO GST_EVENT gstpad.c:4671:gst_pad_send_event:<capsfilter0:sink> Received event on flushing pad. Discarding
0:00:00.812738510 7677 0x81ba050 INFO GST_STATES gstelement.c:2150:gst_element_continue_state:<v4l2src0> completed state change to READY
0:00:00.812866598 7677 0x81ba050 INFO GST_STATES gstelement.c:2163:gst_element_continue_state:<v4l2src0> posting state-changed PAUSED to READY
0:00:00.813013404 7677 0x81ba050 INFO GST_STATES gstbin.c:2194:gst_bin_change_state_func:<pipeline0> child 'v4l2src0' changed state to 2(READY) successfully
0:00:00.813154553 7677 0x81ba050 INFO GST_STATES gstelement.c:2150:gst_element_continue_state:<pipeline0> completed state change to READY
0:00:00.813270908 7677 0x81ba050 INFO GST_STATES gstelement.c:2163:gst_element_continue_state:<pipeline0> posting state-changed PAUSED to READY
0:00:00.813410032 7677 0x81ba050 INFO GST_STATES gstbin.c:1542:gst_bin_get_state_func:<pipeline0> getting state
Setting pipeline to NULL ...
0:00:00.835727059 7677 0x81ba050 INFO GST_STATES gstelement.c:2150:gst_element_continue_state:<xvimagesink0> completed state change to NULL
0:00:00.835792151 7677 0x81ba050 INFO GST_STATES gstelement.c:2163:gst_element_continue_state:<xvimagesink0> posting state-changed READY to NULL
0:00:00.835862551 7677 0x81ba050 INFO GST_STATES gstbin.c:2194:gst_bin_change_state_func:<pipeline0> child 'xvimagesink0' changed state to 1(NULL) successfully
0:00:00.835934976 7677 0x81ba050 INFO GST_STATES gstelement.c:2150:gst_element_continue_state:<capsfilter0> completed state change to NULL
0:00:00.835980443 7677 0x81ba050 INFO GST_STATES gstelement.c:2163:gst_element_continue_state:<capsfilter0> posting state-changed READY to NULL
0:00:00.836031287 7677 0x81ba050 INFO GST_STATES gstbin.c:2194:gst_bin_change_state_func:<pipeline0> child 'capsfilter0' changed state to 1(NULL) successfully
0:00:00.836095331 7677 0x81ba050 INFO GST_STATES gstelement.c:2150:gst_element_continue_state:<v4l2src0> completed state change to NULL
0:00:00.836137655 7677 0x81ba050 INFO GST_STATES gstelement.c:2163:gst_element_continue_state:<v4l2src0> posting state-changed READY to NULL
0:00:00.836185286 7677 0x81ba050 INFO GST_STATES gstbin.c:2194:gst_bin_change_state_func:<pipeline0> child 'v4l2src0' changed state to 1(NULL) successfully
0:00:00.836273286 7677 0x81ba050 INFO GST_STATES gstelement.c:2150:gst_element_continue_state:<pipeline0> completed state change to NULL
0:00:00.836316448 7677 0x81ba050 INFO GST_STATES gstelement.c:2163:gst_element_continue_state:<pipeline0> posting state-changed READY to NULL
0:00:00.836365965 7677 0x81ba050 INFO GST_STATES gstbin.c:1542:gst_bin_get_state_func:<pipeline0> getting state
FREEING pipeline ...
0:00:00.836444886 7677 0x81ba050 INFO GST_ELEMENT_PADS gstpad.c:1575:gst_pad_unlink: unlinking capsfilter0:src(0x82a5278) and xvimagesink0:sink(0x82a50f8)
0:00:00.836487768 7677 0x81ba050 INFO GST_ELEMENT_PADS gstpad.c:1610:gst_pad_unlink: unlinked capsfilter0:src and xvimagesink0:sink
0:00:00.836524086 7677 0x81ba050 INFO GST_ELEMENT_PADS gstpad.c:1575:gst_pad_unlink: unlinking v4l2src0:src(0x82a5038) and capsfilter0:sink(0x82a51b8)
0:00:00.836560682 7677 0x81ba050 INFO GST_ELEMENT_PADS gstpad.c:1610:gst_pad_unlink: unlinked v4l2src0:src and capsfilter0:sink
0:00:00.836605032 7677 0x81ba050 INFO GST_PARENTAGE gstbin.c:1221:gst_bin_remove_func:<pipeline0> removed child "capsfilter0"
0:00:00.836662371 7677 0x81ba050 INFO GST_REFCOUNTING gstelement.c:2721:gst_element_dispose:<capsfilter0> dispose
0:00:00.836699317 7677 0x81ba050 INFO GST_ELEMENT_PADS gstelement.c:757:gst_element_remove_pad:<capsfilter0> removing pad 'src'
0:00:00.836759241 7677 0x81ba050 INFO GST_ELEMENT_PADS gstelement.c:757:gst_element_remove_pad:<capsfilter0> removing pad 'sink'
0:00:00.836816301 7677 0x81ba050 INFO GST_REFCOUNTING gstelement.c:2745:gst_element_dispose:<capsfilter0> parent class dispose
0:00:00.836857717 7677 0x81ba050 INFO GST_REFCOUNTING gstelement.c:2768:gst_element_finalize:<capsfilter0> finalize
0:00:00.836894034 7677 0x81ba050 INFO GST_REFCOUNTING gstelement.c:2779:gst_element_finalize:<capsfilter0> finalize parent
0:00:00.836938732 7677 0x81ba050 INFO GST_PARENTAGE gstbin.c:1221:gst_bin_remove_func:<pipeline0> removed child "xvimagesink0"
0:00:00.836979729 7677 0x81ba050 INFO GST_REFCOUNTING gstelement.c:2721:gst_element_dispose:<xvimagesink0> dispose
0:00:00.837013043 7677 0x81ba050 INFO GST_ELEMENT_PADS gstelement.c:757:gst_element_remove_pad:<xvimagesink0> removing pad 'sink'
0:00:00.837059138 7677 0x81ba050 INFO GST_REFCOUNTING gstelement.c:2745:gst_element_dispose:<xvimagesink0> parent class dispose
0:00:00.837103767 7677 0x81ba050 INFO GST_REFCOUNTING gstelement.c:2768:gst_element_finalize:<xvimagesink0> finalize
0:00:00.837146370 7677 0x81ba050 INFO GST_REFCOUNTING gstelement.c:2779:gst_element_finalize:<xvimagesink0> finalize parent
0:00:00.837189252 7677 0x81ba050 INFO GST_PARENTAGE gstbin.c:1221:gst_bin_remove_func:<pipeline0> removed child "v4l2src0"
0:00:00.837302744 7677 0x81ba050 INFO GST_REFCOUNTING gstelement.c:2721:gst_element_dispose:<v4l2src0> dispose
0:00:00.837338503 7677 0x81ba050 INFO GST_ELEMENT_PADS gstelement.c:757:gst_element_remove_pad:<v4l2src0> removing pad 'src'
0:00:00.837384668 7677 0x81ba050 INFO GST_REFCOUNTING gstelement.c:2745:gst_element_dispose:<v4l2src0> parent class dispose
0:00:00.837425455 7677 0x81ba050 INFO GST_REFCOUNTING gstelement.c:2768:gst_element_finalize:<v4l2src0> finalize
0:00:00.837460306 7677 0x81ba050 INFO GST_REFCOUNTING gstelement.c:2779:gst_element_finalize:<v4l2src0> finalize parent
0:00:00.837497322 7677 0x81ba050 INFO GST_REFCOUNTING gstelement.c:2721:gst_element_dispose:<pipeline0> dispose
0:00:00.837544394 7677 0x81ba050 INFO GST_REFCOUNTING gstelement.c:2745:gst_element_dispose:<pipeline0> parent class dispose
0:00:00.837581410 7677 0x81ba050 INFO GST_REFCOUNTING gstelement.c:2768:gst_element_finalize:<pipeline0> finalize
0:00:00.837615004 7677 0x81ba050 INFO GST_REFCOUNTING gstelement.c:2779:gst_element_finalize:<pipeline0> finalize parent
0:00:00.837650343 7677 0x81ba050 INFO GST_INIT gst.c:1311:gst_deinit: deinitializing GStreamer
0:00:00.844485483 7677 0x81ba050 INFO GST_INIT gst.c:1404:gst_deinit: deinitialized GStreamer
и что именно гуглить я вообще не представляю... (((