<div dir="ltr"><div>Hi all,</div><div><br></div><div>I am using the mipi camera on board for a test:</div><div><br></div>gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,format=I420,width=320,height=240,framerate=30/1 ! videoconvert ! fakesink<br><div><br></div><div>But it always shows errors about not negotiated (-4).</div><div><br></div><div>The details about debug info as below:</div><div><p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif"><br></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">“<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">Setting pipeline to PAUSED ...<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">Pipeline is live and does not need PREROLL ...<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">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<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">0:00:00.775854667 17474 0xa712f0
WARN
v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0>
Unable to try format: Invalid argument<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">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<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">0:00:00.775988000 17474 0xa712f0
WARN
v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0>
Unable to try format: Invalid argument<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">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<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">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<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">0:00:00.776245667 17474 0xa712f0
WARN
v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0>
Unable to try format: Invalid argument<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">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<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">0:00:00.776375000 17474 0xa712f0 WARN
v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0>
Unable to try format: Invalid argument<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">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<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">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<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">0:00:00.776626000 17474 0xa712f0
WARN
v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0>
Unable to try format: Invalid argument<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">Setting pipeline to PLAYING ...<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">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<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">0:00:00.776754667 17474 0xa712f0
WARN
v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0>
Unable to try format: Invalid argument<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">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<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">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<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">0:00:00.777033334 17474 0xa712f0
WARN
v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0>
Unable to try format: Invalid argument<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">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<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">0:00:00.777170000 17474 0xa712f0
WARN
v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0>
Unable to try format: Invalid argument<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">New clock: GstSystemClock<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">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<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">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<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">0:00:01.110027334 17474 0xa712f0
WARN
v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0>
Unable to try format: Invalid argument<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">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<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">0:00:01.110169334 17474 0xa712f0
WARN
v4l2 gstv4l2object.c:2741:gst_v4l2_object_get_nearest_size:<v4l2src0>
Unable to try format: Invalid argument<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">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<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">0:00:01.115789334 17474 0xa712f0
WARN
basesrc gstbasesrc.c:2948:gst_base_src_loop:<v4l2src0> error: Internal
data flow error.<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">0:00:01.115877667 17474 0xa712f0
WARN
basesrc gstbasesrc.c:2948:gst_base_src_loop:<v4l2src0> error: streaming
task paused, reason not-negotiated (-4)<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">ERROR: from element
/GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data flow error.<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">Additional debug info:<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">gstbasesrc.c(2948): gst_base_src_loop ():
/GstPipeline:pipeline0/GstV4l2Src:v4l2src0:<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">streaming task paused, reason not-negotiated (-4)<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">Execution ended after 0:00:00.339158667<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">Setting pipeline to PAUSED ...<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">Setting pipeline to READY ...<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">Setting pipeline to NULL ...<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">Freeing pipeline ...<span></span></span><span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">“<span></span></span><span></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif"><br></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:calibri,sans-serif">Thanks in advanced!</span></p>
<span></span></div><div><br></div><div><br></div></div>