TX2 gst-launch v4l usb problems

Hi

I have the foolowing result using :

gst-launch-1.0 v4l2src device="/dev/video0" ! qtdemux ! queue ! h264parse ! nvv4l2decoder enable-max-performance=1 ! nv3dsink -e
AVERTISSEMENT : pipeline erroné : impossible de connecter v4l2src0 à qtdemux0

same with at te end : xvimagesink -e

this one work:
gst-launch-1.0 v4l2src device="/dev/video0" ! "video/x-raw, width=640, height=480, format=(string)YUY2" ! xvimagesink -e

For information My v4l gst :

gst-inspect-1.0 | grep v4l
video4linux2:  v4l2src: Video (video4linux2) Source
video4linux2:  v4l2sink: Video (video4linux2) Sink
video4linux2:  v4l2radio: Radio (video4linux2) Tuner
video4linux2:  v4l2deviceprovider (GstDeviceProviderFactory)
nvvideo4linux2:  nvv4l2vp9enc: V4L2 VP9 Encoder
nvvideo4linux2:  nvv4l2vp8enc: V4L2 VP8 Encoder
nvvideo4linux2:  nvv4l2h265enc: V4L2 H.265 Encoder
nvvideo4linux2:  nvv4l2h264enc: V4L2 H.264 Encoder
nvvideo4linux2:  nvv4l2decoder: NVIDIA v4l2 video decoder

and

gst-inspect-1.0 --version
gst-inspect-1.0 version 1.14.5
GStreamer 1.14.5
https://launchpad.net/distros/ubuntu/+source/gstreamer1.0

Package: nvidia-jetpack
Version: 4.3-b134
Architecture: arm64

thank’s

Hi @laurent.delaon

This forum is for DRIVE. I assume you’re working on Jetson.
Please create your topic in a corresponding subcategory under Jetson & Embedded Systems - NVIDIA Developer Forums.

Thanks.

ok thank’s.
I do it.