<div dir="auto"><div>Any chance you could share a trace with env GST_DEBUG="*v4l*:7,2" ?<br><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Le mar. 3 janv. 2023, 10 h 46, James via gstreamer-devel <<a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a>> a écrit :<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I'm avoiding any reference to the rude rant a few days back.<br>
<br>
I tried/tested lots before writing code which has worked somewhere (ubuntu 22.04 with gst 18 that stutters audio, SUSE tumbleweed gst 20..latest.)<br>
<br>
All parcelled up and " Failed to allocate required memory" reared it's ugly head.<br>
<br>
Either branch runs perfectly on it's own, starting the other fails.<br>
I run one channel from my code. Take one of my tests<br>
<br>
dvr@dvrTW:~> cat gst.try55<br>
gst-launch-1.0 -v v4l2src device=/dev/video2 ! image/jpeg,framerate=30/1 \<br>
! jpegdec ! \<br>
videoconvert ! \<br>
queue max-size-buffers=0 max-size-bytes=0 max-size-time=1000000000 ! \<br>
gdkpixbufoverlay location=rennisons.png alpha=0.5 offset-x=1800 offset-y=900 ! \<br>
clockoverlay halignment=left valignment=top draw-outline=true font-desc="Sans, 12" time-format="%d %b %Y %H:%M:%S" ! \<br>
textoverlay text="This is Line 1" deltay=50 halignment=left valignment=top font-desc="Sans, 10" draw-outline=true ! \<br>
textoverlay text="Line 2" deltay=100 halignment=left valignment=top font-desc="Sans, 10" draw-outline=true ! \<br>
textoverlay text="Look it works" deltax=50 deltay=150 halignment=left valignment=top font-desc="Cantarell Oblique Medium 20" draw-outline=true ! \<br>
textoverlay deltay=200 halignment=left valignment=top font-desc="Sans, 10" draw-outline=true ! \<br>
textoverlay text="Line 5" deltay=250 halignment=left valignment=top font-desc="Sans, 10" draw-outline=true ! \<br>
textoverlay deltay=300 halignment=left valignment=top font-desc="Sans, 10" draw-outline=true ! \<br>
textoverlay deltay=350 halignment=left valignment=top font-desc="Sans, 10" draw-outline=true ! \<br>
textoverlay deltay=400 halignment=left valignment=top font-desc="Sans, 10" draw-outline=true ! \<br>
textoverlay text="Why" deltay=450 halignment=left valignment=top font-desc="Sans, 10" draw-outline=true ! \<br>
textoverlay text="Line 10" deltay=500 halignment=left valignment=top font-desc="AdobeTimes Bold 10" draw-outline=true ! \<br>
tee name=t \<br>
t. ! queue ! xvimagesink sync=false \<br>
t. ! queue ! \<br>
x264enc speed-preset=ultrafast tune=zerolatency byte-stream=true bitrate=4000 ! \<br>
mpegtsmux name=mux ! \<br>
filesink location='try55.mp4'<br>
<br>
<br>
and run it<br>
<br>
dvr@dvrTW:~> ./gst.try55<br>
Setting pipeline to PAUSED ...<br>
Pipeline is live and does not need PREROLL ...<br>
Pipeline is PREROLLED ...<br>
Setting pipeline to PLAYING ...<br>
New clock: GstSystemClock<br>
/GstPipeline:pipeline0/GstV4l2Src:v4l2src0.GstPad:src: caps = image/jpeg, framerate=(fraction)30/1, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, colorimetry=(string)2:4:5:1<br>
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = image/jpeg, framerate=(fraction)30/1, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, colorimetry=(string)2:4:5:1<br>
/GstPipeline:pipeline0/GstJpegDec:jpegdec0.GstPad:sink: caps = image/jpeg, framerate=(fraction)30/1, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, colorimetry=(string)2:4:5:1<br>
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps = image/jpeg, framerate=(fraction)30/1, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, colorimetry=(string)2:4:5:1<br>
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Failed to allocate required memory.<br>
Additional debug info:<br>
../sys/v4l2/gstv4l2src.c(777): gst_v4l2src_decide_allocation (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:<br>
Buffer pool activation failed<br>
Execution ended after 0:00:00.005402443<br>
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data stream error.<br>
Setting pipeline to NULL ...<br>
Additional debug info:<br>
../libs/gst/base/gstbasesrc.c(3127): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:<br>
streaming stopped, reason not-negotiated (-4)<br>
Freeing pipeline ...<br>
<br>
Can anybody point me in a direction that solves it please.<br>
<br>
I emphasize that somewhere during testing I had 4 channels all running, every channel runs it's own copy of gstreamer and AFAICT each copy is totally independant. We *must* be looking at some resource<br>
This is running on i7x4 and htop shows 50% cpu and memory used.<br>
<br>
The messing around with jpeg was a suggestion from Nicolas. Each capture card is USB3 in a USB3 port, but the system treated them as USB2 and limited resolution (1280x800 IIRC instead of 1080P)<br></blockquote></div></div><div dir="auto"><br></div><div dir="auto">If it was still a lack of bandwidth, UVC driver should be messaging you through dmesg. </div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
James</blockquote></div></div></div>