[uvch264src in 1.1.1.1] "Got data flow before segment event" warnings until crash

Peter Rennert p.rennert at cs.ucl.ac.uk
Thu Jul 11 08:51:10 PDT 2013


I just want to add that I get the same problem even with a very reduced 
pipeline of:

gst-launch-1.0 uvch264src device=/dev/video1 name=src auto-start=true 
src.vfsrc ! queue ! fakesink src.vidsrc ! queue ! video/x-h264 ! fakesink


........

(gst-launch-1.0:5463): GStreamer-WARNING **: 
gstpad.c:3692:gst_pad_chain_data_unchecked:<fakesink1:sink> Got data 
flow before segment event

(gst-launch-1.0:5463): GStreamer-WARNING **: 
gstpad.c:3923:gst_pad_push_data:<capsfilter0:src> Got data flow before 
segment event

(gst-launch-1.0:5463): GStreamer-WARNING **: 
gstpad.c:3692:gst_pad_chain_data_unchecked:<fakesink1:sink> Got data 
flow before segment event
ERROR: from element 
/GstPipeline:pipeline0/GstUvcH264Src:src/GstUvcH264MjpgDemux:uvch264mjpgdemux0: 
Not enough data to read marker content
Additional debug info:
gstuvch264_mjpgdemux.c(507): gst_uvc_h264_mjpg_demux_chain (): 
/GstPipeline:pipeline0/GstUvcH264Src:src/GstUvcH264MjpgDemux:uvch264mjpgdemux0
Execution ended after 0:00:34.640728375
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline .

On 07/11/2013 04:23 PM, Peter Rennert wrote:
> Hello,
>
> I am trying to get the uvch264src to work in gstreamer 1.1.1.1 (git 
> head compiled yesterday) with the following pipeline:
>
> gst-launch-1.0 uvch264src device=/dev/video1 name=src auto-start=true 
> src.vfsrc ! queue ! 
> video/x-raw,width=320,height=240,format="YUY2",framerate=15/1 ! 
> xvimagesink src.vidsrc ! queue ! 
> video/x-h264,width=1920,height=1080,framerate=30/1,profile=constrained-baseline 
> ! h264parse ! avdec_h264 ! xvimagesink
>
> It runs as expected (showing both the 1920x1080 and 320x240 windows). 
> But it constantly prints warnings (see below). Then stops it . You can 
> find the GST_DEBUG output below the warnings below.
>
> It works stable with gstreamer 0.10 (an older compilation) and
>
> gst-launch uvch264_src device=/dev/video1 name=src auto-start=true 
> src.vfsrc ! queue ! 
> video/x-raw-yuv,width=320,height=240,framerate=15/1 ! xvimagesink 
> src.vidsrc ! queue ! 
> video/x-h264,width=1920,height=1080,framerate=30/1,profile=constrained-baseline 
> ! h264parse ! ffdec_h264 ! xvimagesink
>
> I am using a C920.
>
> I found a (probably) related problem here:
> http://comments.gmane.org/gmane.comp.video.gstreamer.bugs/107399
>
>
> Do I do something wrong in gstreamer 1 or is this a bug?
>
> -----------------
>
> Warnings (i get loads of them, this is just an excerpt):
>
> (gst-launch-1.0:2962): GStreamer-WARNING **: 
> gstpad.c:3923:gst_pad_push_data:<capsfilter1:src> Got data flow before 
> segment event
>
> (gst-launch-1.0:2962): GStreamer-WARNING **: 
> gstpad.c:3692:gst_pad_chain_data_unchecked:<h264parse0:sink> Got data 
> flow before segment event
>
> (gst-launch-1.0:2962): GStreamer-WARNING **: 
> gstpad.c:3923:gst_pad_push_data:<h264parse0:src> Got data flow before 
> segment event
>
> (gst-launch-1.0:2962): GStreamer-WARNING **: 
> gstpad.c:3692:gst_pad_chain_data_unchecked:<avdec_h264-0:sink> Got 
> data flow before segment event
>
> (gst-launch-1.0:2962): GStreamer-WARNING **: 
> gstpad.c:3923:gst_pad_push_data:<capsfilter0:src> Got data flow before 
> segment event
>
> (gst-launch-1.0:2962): GStreamer-WARNING **: 
> gstpad.c:3692:gst_pad_chain_data_unchecked:<xvimagesink0:sink> Got 
> data flow before segment event
>
> (gst-launch-1.0:2962): GStreamer-WARNING **: 
> gstpad.c:3923:gst_pad_push_data:<capsfilter1:src> Got data flow before 
> segment event
>
> (gst-launch-1.0:2962): GStreamer-WARNING **: 
> gstpad.c:3692:gst_pad_chain_data_unchecked:<h264parse0:sink> Got data 
> flow before segment event
>
> (gst-launch-1.0:2962): GStreamer-WARNING **: 
> gstpad.c:3923:gst_pad_push_data:<h264parse0:src> Got data flow before 
> segment event
>
> ==================================================================
>
> GST_DEBUG=5 :
>
> (only the interesting bit, shortly before the error gets reported 
> until the moment the error gets reported)
>
> 0:00:35.394998922  3694      0x1e171e0 DEBUG GST_CLOCK 
> gstclock.c:922:gst_clock_get_internal_time:<GstSystemClock> internal 
> time 26:55:06.762023021
> 0:00:35.395022245  3694      0x1e171e0 DEBUG GST_CLOCK 
> gstclock.c:967:gst_clock_get_time:<GstSystemClock> adjusted time 
> 26:55:06.762023021
> 0:00:35.395034653  3694      0x1e171e0 DEBUG v4l2src 
> gstv4l2src.c:823:gst_v4l2src_fill:<v4l2src0> ts: 26:55:06.771552000 
> now 26:55:06.762058860 delay 0:00:00.000000000
> 0:00:35.395050068  3694      0x1e171e0 INFO v4l2src 
> gstv4l2src.c:861:gst_v4l2src_fill:<v4l2src0> sync to 0:00:34.433332989 
> out ts 0:00:34.768634907
> 0:00:35.395062230  3694      0x1e171e0 DEBUG basesrc 
> gstbasesrc.c:2216:gst_base_src_do_sync:<v4l2src0> no sync needed
> 0:00:35.395069279  3694      0x1e171e0 DEBUG basesrc 
> gstbasesrc.c:2414:gst_base_src_get_range:<v4l2src0> buffer ok
> 0:00:35.395080250  3694      0x1e171e0 DEBUG basetransform 
> gstbasetransform.c:1958:gst_base_transform_handle_buffer:<capsfilter5> 
> handling buffer 0x1de7720 of size 166785 and offset 1032
> 0:00:35.395090539  3694      0x1e171e0 DEBUG basetransform 
> gstbasetransform.c:2042:gst_base_transform_handle_buffer:<capsfilter5> 
> calling prepare buffer
> 0:00:35.395099383  3694      0x1e171e0 DEBUG GST_CAPS 
> gstpad.c:2408:gst_pad_has_current_caps:<capsfilter5:sink> check 
> current pad caps image/jpeg, width=(int)320, height=(int)240, 
> pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)30/1
> 0:00:35.395123772  3694      0x1e171e0 DEBUG basetransform 
> gstbasetransform.c:2049:gst_base_transform_handle_buffer:<capsfilter5> 
> using allocated buffer in 0x1de7720, out 0x1de7720
> 0:00:35.395131630  3694      0x1e171e0 DEBUG basetransform 
> gstbasetransform.c:2066:gst_base_transform_handle_buffer:<capsfilter5> 
> doing inplace transform
> 0:00:35.395150881  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:513:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> Found APP4 marker (12215). JPG: 0-8 - APP4: 8 - 12225
> 0:00:35.395163919  3694      0x1e171e0 DEBUG GST_MEMORY 
> gstmemory.c:138:gst_memory_init: new memory 0x7f77291e63d0, 
> maxsize:1440014 offset:0 size:8
> 0:00:35.395174000  3694      0x1e171e0 DEBUG GST_PERFORMANCE 
> gstallocator.c:466:_sysmem_copy: memcpy 1440007 memory 0x7f7728009720 
> -> 0x7f77291e63d0
> 0:00:35.395566373  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:550:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> New auxiliary stream : v1 - 22 bytes - H264 1920x1080 -- 333333 *100ns 
> -- 27 ms -- 56960032
> 0:00:35.395589065  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:552:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> Auxiliary stream size : 12187 bytes
> 0:00:35.395598711  3694      0x1e171e0 DEBUG GST_MEMORY 
> gstmemory.c:138:gst_memory_init: new memory 0x7f7728587db0, 
> maxsize:1440014 offset:38 size:12187
> 0:00:35.395609310  3694      0x1e171e0 DEBUG GST_PERFORMANCE 
> gstallocator.c:466:_sysmem_copy: memcpy 1440007 memory 0x7f7728009720 
> -> 0x7f7728587db0
> 0:00:35.395854659  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:659:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> Pushing H264 auxiliary buffer video/x-h264, width=(int)1920, 
> height=(int)1080, framerate=(fraction)30/1
> 0:00:35.395885190  3694      0x1e171e0 DEBUG GST_PADS 
> gstpad.c:3224:do_probe_callbacks:<src:vidsrc> data is passed
> 0:00:35.395901512  3694      0x1e171e0 DEBUG GST_PADS 
> gstpad.c:3088:probe_hook_marshal:<src:vidsrc> probe returned OK
> 0:00:35.395918777  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:513:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> Found APP4 marker (65533). JPG: 12225-12225 - APP4: 12225 - 77760
> 0:00:35.395929092  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:550:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> New auxiliary stream : v1 - 22 bytes - YUY2 320x240 -- 333333 *100ns 
> -- 27 ms -- 56960032
> 0:00:35.395940742  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:552:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> Auxiliary stream size : 153600 bytes
> 0:00:35.396005741  3694      0x1e171e0 DEBUG GST_MEMORY 
> gstmemory.c:138:gst_memory_init: new memory 0x7f7728c67d10, 
> maxsize:1440014 offset:12255 size:65505
> 0:00:35.395934221  3694      0x1e2b0a0 DEBUG queue_dataflow 
> gstqueue.c:1240:gst_queue_loop:<queue1> queue is not empty
> 0:00:35.396055314  3694      0x1e2b0a0 DEBUG basetransform 
> gstbasetransform.c:1962:gst_base_transform_handle_buffer:<capsfilter1> 
> handling buffer 0x7f77380050b0 of size 12187 and offset NONE
> 0:00:35.396076643  3694      0x1e2b0a0 DEBUG basetransform 
> gstbasetransform.c:2042:gst_base_transform_handle_buffer:<capsfilter1> 
> calling prepare buffer
> 0:00:35.396089336  3694      0x1e2b0a0 DEBUG GST_CAPS 
> gstpad.c:2408:gst_pad_has_current_caps:<capsfilter1:sink> check 
> current pad caps video/x-h264, width=(int)1920, height=(int)1080, 
> framerate=(fraction)30/1
> 0:00:35.396116373  3694      0x1e2b0a0 DEBUG basetransform 
> gstbasetransform.c:2049:gst_base_transform_handle_buffer:<capsfilter1> 
> using allocated buffer in 0x7f77380050b0, out 0x7f77380050b0
> 0:00:35.396128931  3694      0x1e2b0a0 DEBUG basetransform 
> gstbasetransform.c:2066:gst_base_transform_handle_buffer:<capsfilter1> 
> doing inplace transform
>
> (gst-launch-1.0:3694): GStreamer-WARNING **: 
> gstpad.c:3923:gst_pad_push_data:<capsfilter1:src> Got data flow before 
> segment event
>
> (gst-launch-1.0:3694): GStreamer-WARNING **: 
> gstpad.c:3692:gst_pad_chain_data_unchecked:<h264parse0:sink> Got data 
> flow before segment event
> 0:00:35.396169900  3694      0x1e2b0a0 DEBUG GST_CAPS 
> gstpad.c:2408:gst_pad_has_current_caps:<h264parse0:src> check current 
> pad caps video/x-h264, width=(int)1920, height=(int)1080, 
> framerate=(fraction)30/1, profile=(string)constrained-baseline, 
> parsed=(boolean)true, stream-format=(string)byte-stream, 
> alignment=(string)au
> 0:00:35.396202328  3694      0x1e2b0a0 DEBUG h264parse 
> gsth264parse.c:165:gst_h264_parse_reset_frame:<h264parse0> reset frame
>
> (gst-launch-1.0:3694): GStreamer-WARNING **: 
> gstpad.c:3923:gst_pad_push_data:<h264parse0:src> Got data flow before 
> segment event
>
> (gst-launch-1.0:3694): GStreamer-WARNING **: 
> gstpad.c:3692:gst_pad_chain_data_unchecked:<avdec_h264-0:sink> Got 
> data flow before segment event
> 0:00:35.396241398  3694      0x1e2b0a0 DEBUG default 
> gstsegment.c:481:gst_segment_to_running_time: invalid position (-1)
> 0:00:35.396281397  3694      0x1e2b0a0 DEBUG libav 
> gstavviddec.c:935:gst_ffmpegviddec_do_qos:<avdec_h264-0> decoding time 
> 2562047:47:16.854775807
> 0:00:35.396314138  3694      0x1e2b0a0 DEBUG libav 
> gstavviddec.c:1100:gst_ffmpegviddec_video_frame:<avdec_h264-0> stored 
> opaque values idx 1032
> 0:00:35.396349848  3694      0x1e2b0a0 DEBUG libav :0:: Frame num gap 
> 60 58
> 0:00:35.396378922  3694      0x1e2b0a0 DEBUG libav 
> gstavviddec.c:704:gst_ffmpegviddec_release_buffer:<avdec_h264-0> 
> release frame 1030
> 0:00:35.396414061  3694      0x1e2b0a0 DEBUG libav 
> gstavviddec.c:538:gst_ffmpegviddec_get_buffer:<avdec_h264-0> getting 
> buffer picture 0x7f773c726040
> 0:00:35.396437146  3694      0x1e2b0a0 DEBUG videodecoder 
> gstvideodecoder.c:2883:gst_video_decoder_get_frame:<avdec_h264-0> 
> frame_number : 1032
> 0:00:35.396466024  3694      0x1e2b0a0 DEBUG libav 
> gstavviddec.c:557:gst_ffmpegviddec_get_buffer:<avdec_h264-0> storing 
> opaque 0x7f77300c4130
> 0:00:35.397593960  3694      0x1e2b0a0 DEBUG libav 
> gstavviddec.c:704:gst_ffmpegviddec_release_buffer:<avdec_h264-0> 
> release frame 1031
> 0:00:35.397631322  3694      0x1e2b0a0 DEBUG default 
> gstvideoutils.c:40:_gst_video_codec_frame_free: free frame 0x7f7728848080
> 0:00:35.397643694  3694      0x1e2b0a0 DEBUG GST_MEMORY 
> gstmemory.c:88:_gst_memory_free: free memory 0x7f7728849000
> 0:00:35.397666794  3694      0x1e2b0a0 DEBUG libav 
> gstavviddec.c:538:gst_ffmpegviddec_get_buffer:<avdec_h264-0> getting 
> buffer picture 0x7f773c7264c0
> 0:00:35.398284117  3694      0x1e2b0a0 DEBUG videodecoder 
> gstvideodecoder.c:2883:gst_video_decoder_get_frame:<avdec_h264-0> 
> frame_number : 1032
> 0:00:35.398304138  3694      0x1e2b0a0 WARN libav 
> gstavviddec.c:632:gst_ffmpegviddec_get_buffer:<avdec_h264-0> already 
> alloc'ed output buffer for frame
> 0:00:35.398316802  3694      0x1e2b0a0 ERROR libav :0:: get_buffer() 
> failed (-1 2 (nil))
> 0:00:35.398331690  3694      0x1e2b0a0 ERROR libav :0:: 
> decode_slice_header error
> 0:00:35.398348752  3694      0x1e2b0a0 DEBUG libav 
> gstavviddec.c:538:gst_ffmpegviddec_get_buffer:<avdec_h264-0> getting 
> buffer picture 0x7f773c7264c0
> 0:00:35.398356353  3694      0x1e2b0a0 DEBUG videodecoder 
> gstvideodecoder.c:2883:gst_video_decoder_get_frame:<avdec_h264-0> 
> frame_number : 1032
> 0:00:35.398363340  3694      0x1e2b0a0 WARN libav 
> gstavviddec.c:632:gst_ffmpegviddec_get_buffer:<avdec_h264-0> already 
> alloc'ed output buffer for frame
> 0:00:35.398370450  3694      0x1e2b0a0 ERROR libav :0:: get_buffer() 
> failed (-1 2 (nil))
> 0:00:35.398377837  3694      0x1e2b0a0 ERROR libav :0:: 
> decode_slice_header error
> 0:00:35.398386031  3694      0x1e2b0a0 DEBUG libav 
> gstavviddec.c:538:gst_ffmpegviddec_get_buffer:<avdec_h264-0> getting 
> buffer picture 0x7f773c7264c0
> 0:00:35.398392697  3694      0x1e2b0a0 DEBUG videodecoder 
> gstvideodecoder.c:2883:gst_video_decoder_get_frame:<avdec_h264-0> 
> frame_number : 1032
> 0:00:35.398399053  3694      0x1e2b0a0 WARN libav 
> gstavviddec.c:632:gst_ffmpegviddec_get_buffer:<avdec_h264-0> already 
> alloc'ed output buffer for frame
> 0:00:35.398404717  3694      0x1e2b0a0 ERROR libav :0:: get_buffer() 
> failed (-1 2 (nil))
> 0:00:35.398411627  3694      0x1e2b0a0 ERROR libav :0:: 
> decode_slice_header error
> 0:00:35.398418838  3694      0x1e2b0a0 DEBUG libav 
> gstavviddec.c:538:gst_ffmpegviddec_get_buffer:<avdec_h264-0> getting 
> buffer picture 0x7f773c7264c0
> 0:00:35.398425798  3694      0x1e2b0a0 DEBUG videodecoder 
> gstvideodecoder.c:2883:gst_video_decoder_get_frame:<avdec_h264-0> 
> frame_number : 1032
> 0:00:35.398432465  3694      0x1e2b0a0 WARN libav 
> gstavviddec.c:632:gst_ffmpegviddec_get_buffer:<avdec_h264-0> already 
> alloc'ed output buffer for frame
> 0:00:35.398438066  3694      0x1e2b0a0 ERROR libav :0:: get_buffer() 
> failed (-1 2 (nil))
> 0:00:35.398445219  3694      0x1e2b0a0 ERROR libav :0:: 
> decode_slice_header error
> 0:00:35.398451851  3694      0x1e2b0a0 ERROR libav :0:: mmco: unref 
> short failure
> 0:00:35.398627695  3694      0x1e2b0a0 INFO libav :0:: concealing 8160 
> DC, 8160 AC, 8160 MV errors
> 0:00:35.398828963  3694      0x1e171e0 DEBUG GST_PERFORMANCE 
> gstallocator.c:466:_sysmem_copy: memcpy 1440007 memory 0x7f7728009720 
> -> 0x7f7728c67d10
> 0:00:35.399319058  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:513:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> Found APP4 marker (65533). JPG: 77760-77760 - APP4: 77760 - 143295
> 0:00:35.399353615  3694      0x1e171e0 DEBUG GST_MEMORY 
> gstmemory.c:138:gst_memory_init: new memory 0x7f7728849000, 
> maxsize:1440014 offset:77764 size:65531
> 0:00:35.399368422  3694      0x1e171e0 DEBUG GST_PERFORMANCE 
> gstallocator.c:466:_sysmem_copy: memcpy 1440007 memory 0x7f7728009720 
> -> 0x7f7728849000
> 0:00:35.399658333  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:513:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> Found APP4 marker (22566). JPG: 143295-143295 - APP4: 143295 - 165863
> 0:00:35.399677140  3694      0x1e171e0 DEBUG GST_MEMORY 
> gstmemory.c:138:gst_memory_init: new memory 0x7f7728dc76c0, 
> maxsize:1440014 offset:143299 size:22564
> 0:00:35.399690113  3694      0x1e171e0 DEBUG GST_PERFORMANCE 
> gstallocator.c:466:_sysmem_copy: memcpy 1440007 memory 0x7f7728009720 
> -> 0x7f7728dc76c0
> 0:00:35.399982333  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:659:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> Pushing YUY2 auxiliary buffer video/x-raw, format=(string)YUY2, 
> width=(int)320, height=(int)240, framerate=(fraction)15/1
> 0:00:35.400035247  3694      0x1e171e0 DEBUG basetransform 
> gstbasetransform.c:1962:gst_base_transform_handle_buffer:<videoconvert4> 
> handling buffer 0x7f7730007550 of size 153600 and offset NONE
> 0:00:35.400047757  3694      0x1e171e0 DEBUG default 
> gstsegment.c:481:gst_segment_to_running_time: invalid position (-1)
> 0:00:35.400057009  3694      0x1e171e0 DEBUG basetransform 
> gstbasetransform.c:2042:gst_base_transform_handle_buffer:<videoconvert4> 
> calling prepare buffer
> 0:00:35.400066028  3694      0x1e171e0 DEBUG basetransform 
> gstbasetransform.c:1537:default_prepare_output_buffer:<videoconvert4> 
> passthrough: reusing input buffer
> 0:00:35.400074785  3694      0x1e171e0 DEBUG basetransform 
> gstbasetransform.c:2049:gst_base_transform_handle_buffer:<videoconvert4> 
> using allocated buffer in 0x7f7730007550, out 0x7f7730007550
> 0:00:35.400085953  3694      0x1e171e0 DEBUG basetransform 
> gstbasetransform.c:2060:gst_base_transform_handle_buffer:<videoconvert4> 
> element is in passthrough
> 0:00:35.400100607  3694      0x1e171e0 DEBUG GST_PADS 
> gstpad.c:3224:do_probe_callbacks:<src:vfsrc> data is passed
> 0:00:35.400125786  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:694:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> SOS marker wasn't found. MJPG is container only
> 0:00:35.400136546  3694      0x1e171e0 DEBUG GST_MEMORY 
> gstmemory.c:88:_gst_memory_free: free memory 0x7f77291e63d0
> 0:00:35.400153414  3694      0x1e171e0 DEBUG v4l2 
> gstv4l2bufferpool.c:933:gst_v4l2_buffer_pool_release_buffer:<v4l2bufferpool0> 
> release buffer 0x1de7720
> 0:00:35.400178526  3694      0x1e171e0 DEBUG basesrc 
> gstbasesrc.c:2351:gst_base_src_get_range:<v4l2src0> calling create 
> offset 18446744073709551615 length 4096, time 0
> 0:00:35.400194362  3694      0x1e171e0 DEBUG v4l2 
> gstv4l2bufferpool.c:832:gst_v4l2_buffer_pool_acquire_buffer:<v4l2bufferpool0> 
> acquire
> 0:00:35.400205021  3694      0x1e171e0 DEBUG GST_POLL 
> gstpoll.c:1200:gst_poll_wait: timeout :99:99:99.999999999
> 0:00:35.400235182  3694      0x1e2b1e0 DEBUG queue_dataflow 
> gstqueue.c:1240:gst_queue_loop:<queue0> queue is not empty
> 0:00:35.402142734  3694      0x1e2b1e0 DEBUG basetransform 
> gstbasetransform.c:1962:gst_base_transform_handle_buffer:<capsfilter0> 
> handling buffer 0x7f7730007550 of size 153600 and offset NONE
> 0:00:35.402168640  3694      0x1e2b1e0 DEBUG basetransform 
> gstbasetransform.c:2042:gst_base_transform_handle_buffer:<capsfilter0> 
> calling prepare buffer
> 0:00:35.402178987  3694      0x1e2b1e0 DEBUG GST_CAPS 
> gstpad.c:2408:gst_pad_has_current_caps:<capsfilter0:sink> check 
> current pad caps video/x-raw, format=(string)YUY2, width=(int)320, 
> height=(int)240, framerate=(fraction)15/1
> 0:00:35.402210753  3694      0x1e2b1e0 DEBUG basetransform 
> gstbasetransform.c:2049:gst_base_transform_handle_buffer:<capsfilter0> 
> using allocated buffer in 0x7f7730007550, out 0x7f7730007550
> 0:00:35.402218850  3694      0x1e2b1e0 DEBUG basetransform 
> gstbasetransform.c:2066:gst_base_transform_handle_buffer:<capsfilter0> 
> doing inplace transform
>
> (gst-launch-1.0:3694): GStreamer-WARNING **: 
> gstpad.c:3923:gst_pad_push_data:<capsfilter0:src> Got data flow before 
> segment event
>
> (gst-launch-1.0:3694): GStreamer-WARNING **: 
> gstpad.c:3692:gst_pad_chain_data_unchecked:<xvimagesink0:sink> Got 
> data flow before segment event
> 0:00:35.402247697  3694      0x1e2b1e0 DEBUG basesink 
> gstbasesink.c:3283:gst_base_sink_chain_unlocked:<xvimagesink0> got 
> times start: 99:99:99.999999999, end: 99:99:99.999999999
> 0:00:35.402263093  3694      0x1e2b1e0 DEBUG basesink 
> gstbasesink.c:1899:gst_base_sink_get_sync_times:<xvimagesink0> got 
> times start: 99:99:99.999999999, stop: 99:99:99.999999999, do_sync 0
> 0:00:35.402275683  3694      0x1e2b1e0 DEBUG default 
> gstsegment.c:481:gst_segment_to_running_time: invalid position (-1)
> 0:00:35.402281951  3694      0x1e2b1e0 DEBUG default 
> gstsegment.c:481:gst_segment_to_running_time: invalid position (-1)
> 0:00:35.402289418  3694      0x1e2b1e0 DEBUG basesink 
> gstbasesink.c:3354:gst_base_sink_chain_unlocked:<xvimagesink0> 
> rendering object 0x7f7730007550
> 0:00:35.402297939  3694      0x1e2b1e0 DEBUG basesink 
> gstbasesink.c:938:gst_base_sink_set_last_buffer_unlocked:<xvimagesink0> setting 
> last buffer to 0x7f7730007550
> 0:00:35.402309005  3694      0x1e2b1e0 DEBUG GST_MEMORY 
> gstmemory.c:88:_gst_memory_free: free memory 0x7f7728f27070
> 0:00:35.402322365  3694      0x1e2b1e0 DEBUG GST_MEMORY 
> gstmemory.c:88:_gst_memory_free: free memory 0x7f7729086a20
> 0:00:35.402329259  3694      0x1e2b1e0 DEBUG GST_MEMORY 
> gstmemory.c:88:_gst_memory_free: free memory 0x7f7729345d80
> 0:00:35.402748981  3694      0x1e2b1e0 DEBUG bufferpool 
> gstbufferpool.c:479:gst_buffer_pool_set_active:<xvimagebufferpool1> 
> pool was in the right state
> 0:00:35.402773116  3694      0x1e2b1e0 DEBUG GST_MEMORY 
> gstmemory.c:138:gst_memory_init: new memory 0x7f7738006800, 
> maxsize:153607 offset:0 size:153600
> 0:00:35.402785810  3694      0x1e2b1e0 DEBUG GST_PERFORMANCE 
> gstbuffer.c:244:_get_merged_memory: memcpy 65505 bytes for merge 
> 0x7f7738006800 from memory 0x7f7728c67d10
> 0:00:35.402805953  3694      0x1e2b1e0 DEBUG GST_PERFORMANCE 
> gstbuffer.c:244:_get_merged_memory: memcpy 65531 bytes for merge 
> 0x7f7738006800 from memory 0x7f7728849000
> 0:00:35.402825501  3694      0x1e2b1e0 DEBUG GST_PERFORMANCE 
> gstbuffer.c:244:_get_merged_memory: memcpy 22564 bytes for merge 
> 0x7f7738006800 from memory 0x7f7728dc76c0
> 0:00:35.402843541  3694      0x1e2b1e0 DEBUG GST_PERFORMANCE 
> gstbuffer.c:1509:gst_buffer_map_range: temporary mapping for memory 
> 0x7f7738006800 in buffer 0x7f7730007550
> 0:00:35.402930602  3694      0x1e2b1e0 DEBUG GST_PERFORMANCE 
> video-frame.c:245:gst_video_frame_copy_plane: copy plane 0, w:640 h:240
> 0:00:35.402963361  3694      0x1e2b1e0 DEBUG GST_MEMORY 
> gstmemory.c:88:_gst_memory_free: free memory 0x7f7738006800
> 0:00:35.402993223  3694      0x1e2b1e0 DEBUG videosink 
> gstvideosink.c:117:gst_video_sink_center_rect: source is 320x240 dest 
> is 320x240, result is 320x240 with x,y 0x0
> 0:00:35.403172767  3694      0x1e2b1e0 DEBUG GST_QOS 
> gstbasesink.c:2855:gst_base_sink_do_render_stats:<xvimagesink0> 
> avg_render: 0:00:00.000771911
> 0:00:35.403185342  3694      0x1e2b1e0 DEBUG basesink 
> gstbasesink.c:3393:gst_base_sink_chain_unlocked:<xvimagesink0> object 
> unref after render 0x7f7730007550
> 0:00:35.403196545  3694      0x1e2b1e0 DEBUG queue_dataflow 
> gstqueue.c:1228:gst_queue_loop:<queue0> queue is empty
> 0:00:35.426997236  3694      0x1e171e0 DEBUG v4l2 
> gstv4l2bufferpool.c:1167:gst_v4l2_buffer_pool_process:<v4l2bufferpool0> process 
> buffer 0x1de7830
> 0:00:35.427041303  3694      0x1e171e0 DEBUG GST_CLOCK 
> gstclock.c:922:gst_clock_get_internal_time:<GstSystemClock> internal 
> time 26:55:06.794065247
> 0:00:35.427056137  3694      0x1e171e0 DEBUG GST_CLOCK 
> gstclock.c:967:gst_clock_get_time:<GstSystemClock> adjusted time 
> 26:55:06.794065247
> 0:00:35.427067629  3694      0x1e171e0 DEBUG v4l2src 
> gstv4l2src.c:823:gst_v4l2src_fill:<v4l2src0> ts: 26:55:06.800990000 
> now 26:55:06.794092266 delay 0:00:00.000000000
> 0:00:35.427080729  3694      0x1e171e0 INFO v4l2src 
> gstv4l2src.c:861:gst_v4l2src_fill:<v4l2src0> sync to 0:00:34.466666322 
> out ts 0:00:34.800677133
> 0:00:35.427092788  3694      0x1e171e0 DEBUG basesrc 
> gstbasesrc.c:2216:gst_base_src_do_sync:<v4l2src0> no sync needed
> 0:00:35.427100101  3694      0x1e171e0 DEBUG basesrc 
> gstbasesrc.c:2414:gst_base_src_get_range:<v4l2src0> buffer ok
> 0:00:35.427112183  3694      0x1e171e0 DEBUG basetransform 
> gstbasetransform.c:1958:gst_base_transform_handle_buffer:<capsfilter5> 
> handling buffer 0x1de7830 of size 165490 and offset 1033
> 0:00:35.427122893  3694      0x1e171e0 DEBUG basetransform 
> gstbasetransform.c:2042:gst_base_transform_handle_buffer:<capsfilter5> 
> calling prepare buffer
> 0:00:35.427131748  3694      0x1e171e0 DEBUG GST_CAPS 
> gstpad.c:2408:gst_pad_has_current_caps:<capsfilter5:sink> check 
> current pad caps image/jpeg, width=(int)320, height=(int)240, 
> pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)30/1
> 0:00:35.427157133  3694      0x1e171e0 DEBUG basetransform 
> gstbasetransform.c:2049:gst_base_transform_handle_buffer:<capsfilter5> 
> using allocated buffer in 0x1de7830, out 0x1de7830
> 0:00:35.427164745  3694      0x1e171e0 DEBUG basetransform 
> gstbasetransform.c:2066:gst_base_transform_handle_buffer:<capsfilter5> 
> doing inplace transform
> 0:00:35.427176735  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:513:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> Found APP4 marker (12182). JPG: 0-8 - APP4: 8 - 12192
> 0:00:35.427197573  3694      0x1e171e0 DEBUG GST_MEMORY 
> gstmemory.c:138:gst_memory_init: new memory 0x7f7728f27070, 
> maxsize:1440014 offset:0 size:8
> 0:00:35.427207769  3694      0x1e171e0 DEBUG GST_PERFORMANCE 
> gstallocator.c:466:_sysmem_copy: memcpy 1440007 memory 0x7f77281690c0 
> -> 0x7f7728f27070
> 0:00:35.427908444  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:550:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> New auxiliary stream : v1 - 22 bytes - H264 1920x1080 -- 333333 *100ns 
> -- 27 ms -- 67059032
> 0:00:35.427927470  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:552:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> Auxiliary stream size : 12154 bytes
> 0:00:35.427939077  3694      0x1e171e0 DEBUG GST_MEMORY 
> gstmemory.c:138:gst_memory_init: new memory 0x7f7729086a20, 
> maxsize:1440014 offset:38 size:12154
> 0:00:35.427948111  3694      0x1e171e0 DEBUG GST_PERFORMANCE 
> gstallocator.c:466:_sysmem_copy: memcpy 1440007 memory 0x7f77281690c0 
> -> 0x7f7729086a20
> 0:00:35.428626317  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:659:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> Pushing H264 auxiliary buffer video/x-h264, width=(int)1920, 
> height=(int)1080, framerate=(fraction)30/1
> 0:00:35.428658303  3694      0x1e171e0 DEBUG GST_PADS 
> gstpad.c:3224:do_probe_callbacks:<src:vidsrc> data is passed
> 0:00:35.428666953  3694      0x1e171e0 DEBUG GST_PADS 
> gstpad.c:3088:probe_hook_marshal:<src:vidsrc> probe returned OK
> 0:00:35.428679400  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:513:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> Found APP4 marker (65533). JPG: 12192-12192 - APP4: 12192 - 77727
> 0:00:35.428688152  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:550:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> New auxiliary stream : v1 - 22 bytes - YUY2 320x240 -- 333333 *100ns 
> -- 27 ms -- 67059032
> 0:00:35.428697950  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:552:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> Auxiliary stream size : 153600 bytes
> 0:00:35.428708335  3694      0x1e171e0 DEBUG GST_MEMORY 
> gstmemory.c:138:gst_memory_init: new memory 0x7f77291e63d0, 
> maxsize:1440014 offset:12222 size:65505
> 0:00:35.428720262  3694      0x1e171e0 DEBUG GST_PERFORMANCE 
> gstallocator.c:466:_sysmem_copy: memcpy 1440007 memory 0x7f77281690c0 
> -> 0x7f77291e63d0
> 0:00:35.429419395  3694      0x1e171e0 DEBUG uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:513:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> Found APP4 marker (65533). JPG: 77727-77727 - APP4: 77727 - 143262
> 0:00:35.429437926  3694      0x1e171e0 DEBUG GST_MEMORY 
> gstmemory.c:138:gst_memory_init: new memory 0x7f7729345d80, 
> maxsize:1440014 offset:77731 size:65531
> 0:00:35.429446663  3694      0x1e171e0 DEBUG GST_PERFORMANCE 
> gstallocator.c:466:_sysmem_copy: memcpy 1440007 memory 0x7f77281690c0 
> -> 0x7f7729345d80
> 0:00:35.430148554  3694      0x1e171e0 WARN uvch264mjpgdemux 
> gstuvch264_mjpgdemux.c:507:gst_uvc_h264_mjpg_demux_chain:<uvch264mjpgdemux0> 
> error: Not enough data to read marker content
> 0:00:35.430172000  3694      0x1e171e0 DEBUG GST_MESSAGE 
> gstelement.c:1807:gst_element_message_full:<uvch264mjpgdemux0> start
> 0:00:35.430202374  3694      0x1e171e0 INFO GST_ERROR_SYSTEM 
> gstelement.c:1838:gst_element_message_full:<uvch264mjpgdemux0> posting 
> message: Not enough data to read marker content
> 0:00:35.430223343  3694      0x1e171e0 DEBUG GST_BUS 
> gstbus.c:312:gst_bus_post:<bus0> [msg 0x1e3c5a0] posting on bus error 
> message: 0x1e3c5a0, time 99:99:99.999999999, seq-num 378, element 
> 'uvch264mjpgdemux0', GstMessageError, gerror=(GError)NULL, 
> debug=(string)"gstuvch264_mjpgdemux.c\(507\):\ 
> gst_uvc_h264_mjpg_demux_chain\ \(\):\ 
> /GstPipeline:pipeline0/GstUvcH264Src:src/GstUvcH264MjpgDemux:uvch264mjpgdemux0";
>
> ... now it continues with with and EOS that stops the pipeline



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