Obscure error messages
James Linder
jam at tigger.ws
Wed Jan 4 07:54:27 UTC 2023
> On 4 Jan 2023, at 1:52 pm, James via gstreamer-devel <gstreamer-devel at lists.freedesktop.org> wrote:
>
>
>
>> On 4 Jan 2023, at 7:29 am, Nicolas Dufresne via gstreamer-devel <gstreamer-devel at lists.freedesktop.org> wrote:
>>
>> Any chance you could share a trace with env GST_DEBUG="*v4l*:7,2" ?
>>
>> Le mar. 3 janv. 2023, 10 h 46, James via gstreamer-devel <gstreamer-devel at lists.freedesktop.org> a écrit :
>> I'm avoiding any reference to the rude rant a few days back.
>>
>> 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.)
>>
>> All parcelled up and " Failed to allocate required memory" reared it's ugly head.
>>
>> Either branch runs perfectly on it's own, starting the other fails.
>> I run one channel from my code. Take one of my tests
>>
>> dvr at dvrTW:~> cat gst.try55
>> gst-launch-1.0 -v v4l2src device=/dev/video2 ! image/jpeg,framerate=30/1 \
>> ! jpegdec ! \
>> videoconvert ! \
>> queue max-size-buffers=0 max-size-bytes=0 max-size-time=1000000000 ! \
>> gdkpixbufoverlay location=rennisons.png alpha=0.5 offset-x=1800 offset-y=900 ! \
>> clockoverlay halignment=left valignment=top draw-outline=true font-desc="Sans, 12" time-format="%d %b %Y %H:%M:%S" ! \
>> textoverlay text="This is Line 1" deltay=50 halignment=left valignment=top font-desc="Sans, 10" draw-outline=true ! \
>> textoverlay text="Line 2" deltay=100 halignment=left valignment=top font-desc="Sans, 10" draw-outline=true ! \
>> textoverlay text="Look it works" deltax=50 deltay=150 halignment=left valignment=top font-desc="Cantarell Oblique Medium 20" draw-outline=true ! \
>> textoverlay deltay=200 halignment=left valignment=top font-desc="Sans, 10" draw-outline=true ! \
>> textoverlay text="Line 5" deltay=250 halignment=left valignment=top font-desc="Sans, 10" draw-outline=true ! \
>> textoverlay deltay=300 halignment=left valignment=top font-desc="Sans, 10" draw-outline=true ! \
>> textoverlay deltay=350 halignment=left valignment=top font-desc="Sans, 10" draw-outline=true ! \
>> textoverlay deltay=400 halignment=left valignment=top font-desc="Sans, 10" draw-outline=true ! \
>> textoverlay text="Why" deltay=450 halignment=left valignment=top font-desc="Sans, 10" draw-outline=true ! \
>> textoverlay text="Line 10" deltay=500 halignment=left valignment=top font-desc="AdobeTimes Bold 10" draw-outline=true ! \
>> tee name=t \
>> t. ! queue ! xvimagesink sync=false \
>> t. ! queue ! \
>> x264enc speed-preset=ultrafast tune=zerolatency byte-stream=true bitrate=4000 ! \
>> mpegtsmux name=mux ! \
>> filesink location='try55.mp4'
>>
>>
>> and run it
>>
>> dvr at dvrTW:~> ./gst.try55
>> Setting pipeline to PAUSED ...
>> Pipeline is live and does not need PREROLL ...
>> Pipeline is PREROLLED ...
>> Setting pipeline to PLAYING ...
>> New clock: GstSystemClock
>> /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
>> /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
>> /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
>> /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
>> ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Failed to allocate required memory.
>> Additional debug info:
>> ../sys/v4l2/gstv4l2src.c(777): gst_v4l2src_decide_allocation (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
>> Buffer pool activation failed
>> Execution ended after 0:00:00.005402443
>> ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data stream error.
>> Setting pipeline to NULL ...
>> Additional debug info:
>> ../libs/gst/base/gstbasesrc.c(3127): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
>> streaming stopped, reason not-negotiated (-4)
>> Freeing pipeline ...
>>
>> Can anybody point me in a direction that solves it please.
>>
>> 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
>> This is running on i7x4 and htop shows 50% cpu and memory used.
>>
>> 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)
>>
>> If it was still a lack of bandwidth, UVC driver should be messaging you through dmesg.
>
> I'll revert and look but the crux is solved!
>
> The jpeg fiddle was your suggestion to get 1080 on a usb-3 port. The error message was caused by having 2 capture cards on (a hub) a single usb-3 port even though that is quite legal (in terms of bandwidth).
> I will also try 2 cards on a usb-c.
> Then to find the culprit gstreamer or UVC driver.
>
> My m2 adapter is S-L-O-W but on a standard flash disk I can hold 500Mb/s on the usb-3 port.
> Someone pretends the usb-3 is a usb-2: who?
>
How do I discover who, does gstreamer ever talk to dmesg?
…
[16587.796310] usb 3-2.4.4: Found UVC 1.00 device USB Video (534d:2109)
[16587.798893] hid-generic 0003:534D:2109.0009: hiddev98,hidraw6: USB HID v1.10 Device [MACROSILICON USB Video] on usb-0000:00:14.0-2.4.4/input4
[16813.673158] usb 3-2.4.3: Not enough bandwidth for new device state.
[16813.673165] usb 3-2.4.3: Not enough bandwidth for altsetting 3
James
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