Jason Fisher thejasonfisher

Gstreamer Pipeline Samples

Table of Contents:

Gstreamer Pipeline Samples
- Tips for Debug
- Video
  - display test video
  - record to file
record and display at the same time(queue)

Steps to install Deepstream-6.1 on Ubuntu_20.04-LTS, Run YOLO and YOLO.py

***Needed Ubuntu-20 and nvidia driver 510

Step 1: Install Cuda 11.6

wget https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64/cuda-ubuntu2004.pin
sudo mv cuda-ubuntu2004.pin /etc/apt/preferences.d/cuda-repository-pin-60

update: https://framagit.org/tytan652/ffmpeg-ndi-patch use this patch. this gist is outdated

ffmpeg 4.4 with NDI

This patch adds libndi_newtek to last ffmpeg version, and fix timecode related issues that produces wrong PTS/DTS timestamps that seems to happen with newer NDI SDKs.

changes

Updated libndi methods by newer versions (v2/v3)

Linux Video

ffmpeg - is the default standard for video operations of all kind

drawtext filter

If you just want to update some text on the screen the easiest method is to use the drawtext filter with the textfile and reload options.

ffmpeg -i input -vf "drawtext=textfile=songs.txt:reload=1" output songs.txt will be reloaded once per frame. Be sure to update it atomically, or it may be read partially, or even fail.

	import cv2
	import numpy as np
	import torch

	# Create a random torch tensor
	tensor = torch.randn(3, 256, 256)

	# Convert the tensor to a numpy array
	numpy_image = tensor.numpy()

	from contextlib import contextmanager
	import numpy as np
	import torch
	from torch import Tensor, ByteTensor
	import torch.nn.functional as F
	from torch.autograd import Variable
	import pycuda.driver
	from pycuda.gl import graphics_map_flags
	from glumpy import app, gloo, gl

	# MIT License
	# Copyright (c) 2024 Jean-Baptiste Keck

	#Permission is hereby granted, free of charge, to any person obtaining a copy
	#of this software and associated documentation files (the "Software"), to deal
	#in the Software without restriction, including without limitation the rights
	#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	#copies of the Software, and to permit persons to whom the Software is
	#furnished to do so, subject to the following conditions:

	[application]
	enable-perf-measurement=1
	perf-measurement-interval-sec=1

	[source0]
	enable=1
	#Type - 1=CameraV4L2 2=URI 3=MultiURI 4=RTSP
	type=3
	uri=file://../data/towncentre.mp4
	num-sources=1

	#!/bin/bash

	cwd="$(realpath $( cd "$(dirname "$0")" ; pwd -P )/.. )"

	cd $cwd

	function usage() {
	echo "usage: [PATH FOR BUILD FOLDER] [GSTREAMER VERSION] [INSTALLATION_PATH] [PATH TO NVIDIA LIBRARIES]"
	}

	#!/usr/bin/env python3
	# https://gist.github.com/EONRaider/3b7a8ca433538dc52b09099c0ea92745
	__author__ = 'EONRaider, keybase.io/eonraider'

	import fcntl
	import socket
	import struct

	try:
	from netifaces import AF_INET, ifaddresses