0:00:14.885623000  2128   00664000 INFO                GST_PADS gstpad.c:1978:gst_pad_link_prepare: trying to link ksvideosrc0:src and fakesink0:sink
0:00:14.885623000  2128   00664000 DEBUG               GST_CAPS gstpad.c:2246:gst_pad_get_caps_unlocked:<ksvideosrc0:src> get pad caps
0:00:14.886600000  2128   00664000 DEBUG               GST_CAPS gstpad.c:2250:gst_pad_get_caps_unlocked:<ksvideosrc0:src> dispatching to pad getcaps function
0:00:14.886600000  2128   00664000 DEBUG               GST_CAPS gstpad.c:2263:gst_pad_get_caps_unlocked:<ksvideosrc0:src> pad getcaps returned 042F7180
0:00:14.886600000  2128   00664000 DEBUG               GST_CAPS gstpad.c:2246:gst_pad_get_caps_unlocked:<fakesink0:sink> get pad caps
0:00:14.886600000  2128   00664000 DEBUG               GST_CAPS gstpad.c:2250:gst_pad_get_caps_unlocked:<fakesink0:sink> dispatching to pad getcaps function
0:00:14.886600000  2128   00664000 DEBUG               GST_CAPS gstpad.c:2263:gst_pad_get_caps_unlocked:<fakesink0:sink> pad getcaps returned 01B71CE0
0:00:14.886600000  2128   00664000 DEBUG               GST_CAPS gstpad.c:1878:gst_pad_link_check_compatible_unlocked:<ksvideosrc0:src> src caps 042F7180
0:00:14.886600000  2128   00664000 DEBUG               GST_CAPS gstpad.c:1880:gst_pad_link_check_compatible_unlocked:<fakesink0:sink> sink caps 01B71CE0
0:00:14.886600000  2128   00664000 DEBUG               GST_CAPS gstpad.c:1898:gst_pad_link_check_compatible_unlocked: caps are compatible
0:00:14.886600000  2128   00664000 INFO                GST_PADS gstpad.c:2161:gst_pad_link_full: linked ksvideosrc0:src and fakesink0:sink, successful
(...)
0:00:14.913943000  2128   01CDFD30 DEBUG             ksvideosrc gstksvideosrc.c:504:gst_ks_video_src_open_device:<ksvideosrc0> device 0: name='VirtualCamera' path='\\?\root#media#0000#{6994ad05-93ef-11d0-a3cc-00a0c9223196}\global'
0:00:14.921756000  2128   01CDFD30 DEBUG             ksvideosrc gstksvideodevice.c:345:gst_ks_video_device_dump_supported_property_sets: filter supports 1 property set
0:00:14.922732000  2128   01CDFD30 DEBUG             ksvideosrc gstksvideodevice.c:349:gst_ks_video_device_dump_supported_property_sets: [0] {C844D5DC-4F68-44F3-B218-E7B0D29F4226}
0:00:14.923709000  2128   01CDFD30 DEBUG             ksvideosrc ksvideohelpers.c:470:ks_video_probe_filter_for_caps: pin_count = 2
0:00:14.923709000  2128   01CDFD30 DEBUG             ksvideosrc ksvideohelpers.c:489:ks_video_probe_filter_for_caps: pin[0]: pin_comm=3, pin_flow=2
0:00:14.923709000  2128   01CDFD30 DEBUG             ksvideosrc ksvideohelpers.c:489:ks_video_probe_filter_for_caps: pin[1]: pin_comm=3, pin_flow=2
0:00:14.923709000  2128   01CDFD30 DEBUG             ksvideosrc gstksvideodevice.c:416:gst_ks_video_device_open: pin[0]: found media type: 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, 1024 ], height=(int)[ 120, 768 ], framerate=(fraction)[ 0/1, 30/1 ], pixel-aspect-ratio=(fraction)1/1
(...)
0:00:14.960818000  2128   00664000 DEBUG                basesrc gstbasesrc.c:2993:gst_base_src_activate_push:<ksvideosrc0> Activating in push mode
0:00:14.961795000  2128   00664000 DEBUG                basesrc gstbasesrc.c:2746:gst_base_src_start:<ksvideosrc0> starting source
0:00:14.961795000  2128   00664000 DEBUG                basesrc gstbasesrc.c:2792:gst_base_src_start:<ksvideosrc0> format: time, have size: 1, size: 18446744073709551615, duration: -1
0:00:14.962771000  2128   00664000 DEBUG                basesrc gstbasesrc.c:2795:gst_base_src_start:<ksvideosrc0> is seekable: 0
0:00:14.963748000  2128   00664000 DEBUG                basesrc gstbasesrc.c:2800:gst_base_src_start:<ksvideosrc0> is random_access: 0
0:00:14.963748000  2128   00664000 DEBUG               GST_CAPS gstpad.c:2336:gst_pad_get_caps_reffed:<ksvideosrc0:src> get pad caps
0:00:14.964725000  2128   00664000 DEBUG               GST_CAPS gstpad.c:2246:gst_pad_get_caps_unlocked:<ksvideosrc0:src> get pad caps
0:00:14.964725000  2128   00664000 DEBUG               GST_CAPS gstpad.c:2250:gst_pad_get_caps_unlocked:<ksvideosrc0:src> dispatching to pad getcaps function
0:00:14.965701000  2128   00664000 DEBUG               GST_CAPS gstpad.c:2263:gst_pad_get_caps_unlocked:<ksvideosrc0:src> pad getcaps returned 042F8AA0
0:00:14.966678000  2128   00664000 DEBUG                basesrc gstbasesrc.c:2655:gst_base_src_default_negotiate:<ksvideosrc0> caps of src: 042F8AA0
0:00:14.966678000  2128   00664000 DEBUG               GST_CAPS gstpad.c:2396:gst_pad_peer_get_caps_reffed:<ksvideosrc0:src> get peer caps
0:00:14.967654000  2128   00664000 DEBUG               GST_CAPS gstpad.c:2336:gst_pad_get_caps_reffed:<fakesink0:sink> get pad caps
0:00:14.967654000  2128   00664000 DEBUG               GST_CAPS gstpad.c:2246:gst_pad_get_caps_unlocked:<fakesink0:sink> get pad caps
0:00:14.968631000  2128   00664000 DEBUG               GST_CAPS gstpad.c:2250:gst_pad_get_caps_unlocked:<fakesink0:sink> dispatching to pad getcaps function
0:00:14.968631000  2128   00664000 DEBUG               GST_CAPS gstpad.c:2263:gst_pad_get_caps_unlocked:<fakesink0:sink> pad getcaps returned 01B71CE0
0:00:14.969607000  2128   00664000 DEBUG                basesrc gstbasesrc.c:2665:gst_base_src_default_negotiate:<ksvideosrc0> caps of peer: 01B71CE0
0:00:14.970584000  2128   00664000 DEBUG                basesrc gstbasesrc.c:2670:gst_base_src_default_negotiate:<ksvideosrc0> intersect: 042F89E0
0:00:14.970584000  2128   00664000 DEBUG                basesrc gstbasesrc.c:2684:gst_base_src_default_negotiate:<ksvideosrc0> fixated to: 042F89E0
0:00:14.971561000  2128   00664000 DEBUG               GST_CAPS gstpad.c:2773:gst_pad_set_caps:<ksvideosrc0:src> caps 042F89E0 could not be set
0:00:14.972537000  2128   00664000 DEBUG                basesrc gstbasesrc.c:2828:gst_base_src_start:<ksvideosrc0> could not negotiate, stopping
0:00:14.972537000  2128   00664000 WARN                 basesrc gstbasesrc.c:2830:gst_base_src_start:<ksvideosrc0> error: Could not negotiate format
0:00:14.973514000  2128   00664000 WARN                 basesrc gstbasesrc.c:2830:gst_base_src_start:<ksvideosrc0> error: Check your filtered caps, if any
0:00:14.973514000  2128   00664000 DEBUG            GST_MESSAGE gstelement.c:1933:gst_element_message_full:<ksvideosrc0> start
0:00:14.974490000  2128   00664000 INFO        GST_ERROR_SYSTEM gstelement.c:1964:gst_element_message_full:<ksvideosrc0> posting message: Could not negotiate format
0:00:14.974490000  2128   00664000 DEBUG                GST_BUS gstbus.c:308:gst_bus_post:<bus0> [msg 042ACE60] posting on bus, type error, 042F9DE0 from source 0429AE90
0:00:14.975467000  2128   00664000 DEBUG                    bin gstbin.c:3164:gst_bin_handle_message_func:<pipeline0> [msg 042ACE60] handling child ksvideosrc0 message of type error
0:00:14.976443000  2128   00664000 DEBUG                    bin gstbin.c:3171:gst_bin_handle_message_func:<pipeline0> got ERROR message, unlocking state change
0:00:14.976443000  2128   00664000 DEBUG                    bin gstbin.c:3441:gst_bin_handle_message_func:<pipeline0> posting message upward
0:00:14.977420000  2128   00664000 DEBUG                GST_BUS gstbus.c:308:gst_bus_post:<bus1> [msg 042ACE60] posting on bus, type error, 042F9DE0 from source 0429AE90
0:00:14.977420000  2128   00664000 DEBUG                GST_BUS gstbus.c:338:gst_bus_post:<bus1> [msg 042ACE60] pushing on async queue
0:00:14.978396000  2128   00664000 DEBUG                GST_BUS gstbus.c:343:gst_bus_post:<bus1> [msg 042ACE60] pushed on async queue
0:00:14.979373000  2128   00664000 DEBUG                GST_BUS gstbus.c:334:gst_bus_post:<bus0> [msg 042ACE60] dropped
0:00:14.979373000  2128   00664000 INFO        GST_ERROR_SYSTEM gstelement.c:1987:gst_element_message_full:<ksvideosrc0> posted error message: Could not negotiate format