<div dir="ltr"><div>Hi all,</div><div> </div><div>I am using the mipi camera on board for a test:</div><div> </div>gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,format=I420,width=320,height=240,framerate=30/1 ! videoconvert ! fakesink <div> </div><div>But it always shows errors about not negotiated (-4).</div><div> </div><div>The details about debug info as below:</div><div> “ Setting pipeline to PAUSED ... Pipeline is live and does not need PREROLL ... 0:00:00.775658000 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2618:gst_v4l2_object_probe_caps_for_format:<v4l2src0> Unknown frame sizeenum type for pixelformat YUYV: 0 0:00:00.775854667 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0> Unable to try format: Invalid argument 0:00:00.775905334 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2633:gst_v4l2_object_probe_caps_for_format:<v4l2src0> Could not probe minimum capture size for pixelformat YUYV 0:00:00.775988000 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0> Unable to try format: Invalid argument 0:00:00.776034334 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2639:gst_v4l2_object_probe_caps_for_format:<v4l2src0> Could not probe maximum capture size for pixelformat YUYV 0:00:00.776153667 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2618:gst_v4l2_object_probe_caps_for_format:<v4l2src0> Unknown frame sizeenum type for pixelformat YU12: 0 0:00:00.776245667 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0> Unable to try format: Invalid argument 0:00:00.776292667 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2633:gst_v4l2_object_probe_caps_for_format:<v4l2src0> Could not probe minimum capture size for pixelformat YU12 0:00:00.776375000 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0> Unable to try format: Invalid argument 0:00:00.776419667 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2639:gst_v4l2_object_probe_caps_for_format:<v4l2src0> Could not probe maximum capture size for pixelformat YU12 0:00:00.776535667 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2618:gst_v4l2_object_probe_caps_for_format:<v4l2src0> Unknown frame sizeenum type for pixelformat YV12: 0 0:00:00.776626000 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0> Unable to try format: Invalid argument Setting pipeline to PLAYING ... 0:00:00.776672000 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2633:gst_v4l2_object_probe_caps_for_format:<v4l2src0> Could not probe minimum capture size for pixelformat YV12 0:00:00.776754667 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0> Unable to try format: Invalid argument 0:00:00.776802667 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2639:gst_v4l2_object_probe_caps_for_format:<v4l2src0> Could not probe maximum capture size for pixelformat YV12 0:00:00.776931334 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2618:gst_v4l2_object_probe_caps_for_format:<v4l2src0> Unknown frame sizeenum type for pixelformat BGR3: 0 0:00:00.777033334 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0> Unable to try format: Invalid argument 0:00:00.777083667 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2633:gst_v4l2_object_probe_caps_for_format:<v4l2src0> Could not probe minimum capture size for pixelformat BGR3 0:00:00.777170000 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0> Unable to try format: Invalid argument New clock: GstSystemClock 0:00:01.109641667 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2639:gst_v4l2_object_probe_caps_for_format:<v4l2src0> Could not probe maximum capture size for pixelformat BGR3 0:00:01.109869334 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2618:gst_v4l2_object_probe_caps_for_format:<v4l2src0> Unknown frame sizeenum type for pixelformat RGB3: 0 0:00:01.110027334 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0> Unable to try format: Invalid argument 0:00:01.110081667 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2633:gst_v4l2_object_probe_caps_for_format:<v4l2src0> Could not probe minimum capture size for pixelformat RGB3 0:00:01.110169334 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0> Unable to try format: Invalid argument 0:00:01.110216334 17474 0xa712f0 WARN v4l2 gstv4l2object.c:2639:gst_v4l2_object_probe_caps_for_format:<v4l2src0> Could not probe maximum capture size for pixelformat RGB3 0:00:01.115789334 17474 0xa712f0 WARN basesrc gstbasesrc.c:2948:gst_base_src_loop:<v4l2src0> error: Internal data flow error. 0:00:01.115877667 17474 0xa712f0 WARN basesrc gstbasesrc.c:2948:gst_base_src_loop:<v4l2src0> error: streaming task paused, reason not-negotiated (-4) ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data flow error. Additional debug info: gstbasesrc.c(2948): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: streaming task paused, reason not-negotiated (-4) Execution ended after 0:00:00.339158667 Setting pipeline to PAUSED ... Setting pipeline to READY ... Setting pipeline to NULL ... Freeing pipeline ... “ Thanks in advanced! </div><div> </div><div> </div></div>