Hi
I’m having trouble running reference application on anything but usb camera. After a day of google foo I narrowed it down to something being wrong with my system and decoding.
I’m running Ubuntu 18.04 with Tesla P4
After running gst-inspect nvvl4l2decoder I get under device name:
Failed to query video capabilities: Invalid argument
libv4l2: error getting capabilities: Invalid argument
What am I missing or have misconfigured?
please use this to retrieve plugin information;
gst-inspect-1.0 nvv4l2decoder
Factory Details:
Rank primary + 11 (267)
Long-name NVIDIA v4l2 video decoder
Klass Codec/Decoder/Video
Description Decode video streams via V4L2 API
Author Nicolas Dufresne nicolas.dufresne@collabora.com, Viranjan Pagar vpagar@nvidia.com
Plugin Details:
Name nvvideo4linux2
Description Nvidia elements for Video 4 Linux
Filename /opt/nvidia/deepstream/deepstream-4.0/lib/gst-plugins/libgstnvvideo4linux2.so
Version 1.14.0
License LGPL
Source module nvvideo4linux2
Binary package nvvideo4linux2
Origin URL http://nvidia.com/
GObject
±—GInitiallyUnowned
±—GstObject
±—GstElement
±—GstVideoDecoder
±—GstNvV4l2VideoDec
±—nvv4l2decoder
Pad Templates:
SRC template: ‘src’
Availability: Always
Capabilities:
video/x-raw(memory:NVMM)
width: [ 1, 2147483647 ]
height: [ 1, 2147483647 ]
framerate: [ 0/1, 2147483647/1 ]
SINK template: ‘sink’
Availability: Always
Capabilities:
image/jpeg
video/x-h264
stream-format: { (string)byte-stream }
alignment: { (string)au }
video/x-h265
stream-format: { (string)byte-stream }
alignment: { (string)au }
Element has no clocking capabilities.
Element has no URI handling capabilities.
Pads:
SINK: ‘sink’
Pad Template: ‘sink’
SRC: ‘src’
Pad Template: ‘src’
Element Properties:
name : The name of the object
flags: readable, writable
String. Default: “nvv4l2decoder0”
parent : The parent of the object
flags: readable, writable
Object of type “GstObject”
device : Device location
flags: readable
String. Default: “/dev/nvhost-nvdec”
device-name : Name of the device
Failed to query video capabilities: Invalid argument
libv4l2: error getting capabilities: Invalid argument
flags: readable
String. Default: null
device-fd : File descriptor of the device
flags: readable
Integer. Range: -1 - 2147483647 Default: -1
output-io-mode : Output side I/O mode (matches sink pad)
flags: readable, writable
Enum “GstNvV4l2IOMode” Default: 0, “auto”
(0): auto - GST_V4L2_IO_AUTO
(2): mmap - GST_V4L2_IO_MMAP
(5): dmabuf-import - GST_V4L2_IO_DMABUF_IMPORT
capture-io-mode : Capture I/O mode (matches src pad)
flags: readable, writable
Enum “GstNvV4l2IOMode” Default: 0, “auto”
(0): auto - GST_V4L2_IO_AUTO
(2): mmap - GST_V4L2_IO_MMAP
(5): dmabuf-import - GST_V4L2_IO_DMABUF_IMPORT
extra-controls : Extra v4l2 controls (CIDs) for the device
flags: readable, writable
Boxed pointer of type “GstStructure”
skip-frames : Type of frames to skip during decoding
flags: readable, writable, changeable in NULL, READY, PAUSED or PLAYING state
Enum “SkipFrame” Default: 0, “decode_all”
(0): decode_all - Decode all frames
(1): decode_non_ref - Decode non-ref frames
(2): decode_key - decode key frames
drop-frame-interval : Interval to drop the frames,ex: value of 5 means every 5th frame will be given by decoder, rest all dropped
flags: readable, writable, changeable only in NULL or READY state
Unsigned Integer. Range: 0 - 30 Default: 0
num-extra-surfaces : Additional number of surfaces in addition to min decode surfaces given by the v4l2 driver
flags: readable, writable, changeable only in NULL or READY state
Unsigned Integer. Range: 0 - 24 Default: 0
cudadec-memtype : Set to specify memory type for cuda decoder buffers
flags: readable, writable, changeable only in NULL or READY state
Enum “CudaDecMemType” Default: 2, “memtype_unified”
(0): memtype_device - Memory type Device
(1): memtype_pinned - Memory type Host Pinned
(2): memtype_unified - Memory type Unified
gpu-id : Set to GPU Device ID for decoder
flags: readable, writable, changeable only in NULL or READY state
Unsigned Integer. Range: 0 - 4294967295 Default: 0