v4l2src is not working on tx2/?

doohan93 · October 16, 2017, 1:19pm

Hi,

I’d like to use v4l2src not nvcamerasrc due to image sensor.

I test v4l2src on tx2 follows command, but v4l2src is not working on tx2.

gst-launch-1.0 v4l2src device=“/dev/video0” ! “video/x-raw, width=640, height=480, format=(string)I420” ! xvimagesink -e

Plz let me know the reason?

Thanks,
Doohan93

Andrey1984 · October 16, 2017, 5:05pm

r u using the onboard sesor?

cobrien · October 16, 2017, 5:49pm

I use nvcamerasrc for the Jetson TX2 on-board camera:

gst-launch-1.0 nvcamerasrc ! ‘video/x-raw(memory:NVMM),width=1280, height=720, framerate=30/1, format=NV12’ ! nvvidconv ! xvimagesink -e

I’ve used v4l2src for a usb camera plugged in to the Jetson USB.

I’m not 100% sure why nvcamerasrc works and v4l2src doesnt. Bayer formats perhaps?

doohan93 · October 16, 2017, 10:58pm

To Andrey1984

Of course, i’m using onboard sensor, i just want to test v4l2src plugin on tx2.

Thanks,
Doohan93

doohan93 · October 16, 2017, 11:01pm

To cobrien,

You means, usb camera is working on tx2 using v4l2src?

I’m using onboard sensor on tx2, it is not working.

Thanks,
Doohan93

ShaneCCC · October 17, 2017, 2:55am

@doohan93
Onboard camera is bayer sensor you need some plugin like bayer2rbg element and the format is bayer “bggr”
a possible command should be like below.

gst-launch-1.0 v4l2src device="/dev/video0" ! "video/x-bayer, width=640, height=480, format=(string)rggb" ! bayer2rgb ! videoconvert ! xvimagesink -e

doohan93 · October 17, 2017, 12:59pm

To ShaneCCC

I used your recommend command, but i got below error log, what is problem?

Thanks,
Doohan93

→ command
gst-launch-1.0 v4l2src device=“/dev/video0” ! “video/x-bayer, width=640, height=480, format=(string)rggb” ! bayer2rgb ! videoconvert ! xvimagesink -e

→ error log
vert ! xvimagesink -e40, height=480, format=(string)rggb" ! bayer2rgb ! videocov
Setting pipeline to PAUSED …
ERROR: Pipeline doesn’t want to pause.
ERROR: from element /GstPipeline:pipeline0/GstXvImageSink:xvimagesink0: Could nt
Additional debug info:
xvimagesink.c(1760): gst_xv_image_sink_open (): /GstPipeline:pipeline0/GstXvIma:
Could not open display (null)
Setting pipeline to NULL …
Freeing pipeline …

ShaneCCC · October 18, 2017, 2:46am

@doohan
Did you connect HDMI display? Try “export DISPLAY=:0” before launch gst or try replace the xvimagesink to nvoverlaysink.

doohan93 · October 18, 2017, 10:52am

TO ShaneCCC,

Thanks for you answer.

But after i apply export DISPLAY=:0 , i got error message below.

Setting pipeline to PAUSED …
Pipeline is live and does not need PREROLL …
Setting pipeline to PLAYING …
New clock: GstSystemClock
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data f.
Additional debug info:
gstbasesrc.c(2948): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l:
streaming task paused, reason not-negotiated (-4)
EOS on shutdown enabled – waiting for EOS after Error
Waiting for EOS…

Thanks,
Doohan93

ShaneCCC · October 23, 2017, 6:50am

@doohan93
Would you try the fakesink first. If fakesink is no problem it could be the bayer2rgb element have problem. Try some others debayer element.

gst-launch-1.0 v4l2src device="/dev/video0" ! "video/x-bayer, width=640, height=480, format=(string)rggb" ! fakesink

doohan93 · October 26, 2017, 11:44am

Hi ShaneCCC,

I applied your fakesink and i got belows error logs.

gstbasesrc.c(2948): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
streaming task paused, reason not-negotiated (-4)
Execution ended after 0:00:00.000459127
Setting pipeline to PAUSED …
Setting pipeline to READY …
Setting pipeline to NULL …
Freeing pipeline …

And i applied belows article.

But i got belows error logs

Setting pipeline to PAUSED …
Pipeline is live and does not need PREROLL …
/GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = event ******* (fakesink0
Setting pipeline to PLAYING …
New clock: GstSystemClock
/GstPipeline:pipeline0/GstV4l2Src:v4l2src0.GstPad:src: caps = “video/x-bayer,\ format”
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = "video/x-bayer,\ "
/GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = event ******* (fakesink0
/GstPipeline:pipeline0/GstFakeSink:fakesink0.GstPad:sink: caps = “video/x-bayer,\ for”
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps = "video/x-bayer,"
[ 240.024551] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11
[ 241.028564] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11
^Chandling interrupt.
Interrupt: Stopping pipeline …
Execution ended after 0:00:02.446131841
Setting pipeline to PAUSED …
Setting pipeline to READY …
[ 242.032607] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11
[ 243.036651] tegra-vi4 15700000.vi: ATOMP_FE syncpt timeout!
Setting pipeline to NULL …
Freeing pipeline …

Thanks,
Doohan93

ShaneCCC · October 27, 2017, 3:25am

@doohan93
Try don’t set the width, height to avoid sensor mode select failed caused the pipeline error.

gst-launch-1.0 v4l2src device=/dev/video0 ! "video/x-bayer, format=(string)rggb" ! fakesink

doohan93 · October 30, 2017, 6:04am

To ShaneCCC,

i followed your guide, and i got below error log.

nvidia@tegra-ubuntu:~$ export DISPLAY=:0
r, format=(string)rggb" ! fakesink1.0 v4l2src device=/dev/video0 ! "video/x-bay
Setting pipeline to PAUSED …
Pipeline is live and does not need PREROLL …
Setting pipeline to PLAYING …
New clock: GstSystemClock
[ 476.234303] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11
[ 477.238325] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11
[ 478.242355] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11
[ 479.246367] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11

Thanks,
Doohan93

ShaneCCC · October 30, 2017, 6:48am

@doohan93
Looks like need -v for the v4l2src.

gst-launch-1.0 -v v4l2src device=/dev/video0 ! "video/x-bayer, format=(string)rggb" ! fakesink

doohan93 · October 31, 2017, 2:49am

To ShaneCCC,

I applied your option, but result was same. i got below error log…

[ 476.234303] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11
[ 477.238325] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11
[ 478.242355] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11
[ 479.246367] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11

Thanks,
Doohan93

ShaneCCC · October 31, 2017, 5:49am

@Doohan
I didn’t get the PXL_SOF message after run the nvcamerasrc. I can’t figure what the problem now.

Run below command before run the “gst-launch-1.0 -v v4l2src device=/dev/video0 ! “video/x-bayer, format=(string)rggb” ! fakesink”

gst-launch-1.0 nvcamerasrc sensor-id=0 ! 'video/x-raw(memory:NVMM), framerate=(fraction)30/1' ! nvtee ! nvoverlaysink

doohan93 · October 31, 2017, 11:14pm

To ShaneCCC,

I test v4l2src plugin using R27.1 sources.
I checked PXL_SOF error take place in kernel device driver.
And i knew that R28.1 sources released. so i’ll update R28.1 and test.
After test using R28.1, i’ll report v4l2src test result.

Thanks,
Doohan93

kayccc · November 9, 2017, 6:05am

Hi doohan93,

Have your migrated on R28.1? issue still repro?
Please share the test result.

Thanks

doohan93 · November 9, 2017, 7:53am

Hi kayccc,

I updated R28.1 sources, and then test v4l2src.
But PXL_SOF error still happened.

I’ll upload gstreamer command that i used for v4l2src and error log.

Thanks,
Doohan93

doohan93 · November 16, 2017, 11:34am

Hi kayccc,

I’d like to share my test procedure and v4l2src test results .
If my test prodecures have a problem, plz let me know.
And all test using v4l2src failed. plz give me resolution.

Thanks,
Doohan93

test procedure using R28.1 sources

a. flash all binary to clean board status
sudo ./flash.sh jetson-tx2 mmcblk0p1

b. install gstreamer
sudo add-apt-repository universe
sudo add-apt-repository multiverse
sudo apt-get update
sudo apt-get install gstreamer1.0-tools gstreamer1.0-alsa gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-libav
sudo apt-get install libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libgstreamer-plugins-good1.0-dev libgstreamer-plugins-bad1.0-dev

c. connect HDMI display
export DISPLAY=:0

d. sudo apt-get install v4l-utils

test result
a, gst-launch-1.0 nvcamerasrc sensor-id=0 ! ‘video/x-raw(memory:NVMM), framerate=(fraction)30/1’ ! nvtee ! nvoverlaysink
→ it’s working

b. gst-launch-1.0 v4l2src device=“/dev/video0” ! “video/x-bayer, width=640, height=480, format=(string)rggb” ! bayer2rgb ! videoconvert ! xvimagesink -e
→ not working
→ error log
Setting pipeline to PAUSED …
Pipeline is live and does not need PREROLL …
Setting pipeline to PLAYING …
New clock: GstSystemClock
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data f.
Additional debug info:
gstbasesrc.c(2948): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l:
streaming task paused, reason not-negotiated (-4)
EOS on shutdown enabled – waiting for EOS after Error
Waiting for EOS…

c. gst-launch-1.0 v4l2src device=“/dev/video0” ! “video/x-bayer, width=640, height=480, format=(string)rggb” ! fakesink
→ not working
→ error log
Setting pipeline to PAUSED …
Pipeline is live and does not need PREROLL …
Setting pipeline to PLAYING …
New clock: GstSystemClock
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data f.
Additional debug info:
gstbasesrc.c(2948): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l:
streaming task paused, reason not-negotiated (-4)
Execution ended after 0:00:00.000316940
Setting pipeline to PAUSED …
Setting pipeline to READY …
Setting pipeline to NULL …
Freeing pipeline …

d. gst-launch-1.0 -v v4l2src device=/dev/video0 ! “video/x-bayer, format=(string)rggb” ! fakesink
→ not working
→ error log
[ 96.724797] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11
[ 97.728694] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11
[ 98.732604] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11
[ 99.736536] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11