omair18 omair18

	#restream rtsp to udp link

	ffmpeg -i "rtsp://admin:[email protected]:554/" -pix_fmt yuv420p -deinterlace -vf "scale=640:360" -vsync 1 -threads 0 -vcodec libx264 -r 29.970 -g 60 -sc_threshold 0 -b:v 1024k -bufsize 0 -maxrate 1280k -preset medium -tune film -acodec aac -b:a 128k -ac 2 -ar 48000 -af "aresample=async=1:min_hard_comp=0.100000:first_pts=0" -vbsf h264_mp4toannexb -f mpegts udp://0.0.0.0:10000

	# create a test stream and create rtmp stream
	# start nginx server before running this
	ffmpeg -r 30 -f lavfi -i testsrc -vf scale=1280:960 -vcodec libx264 -profile:v baseline -pix_fmt yuv420p -f flv rtmp://localhost/mylive/test

omair18 / test_vid_write.py

Created September 19, 2019 07:40

	import numpy as np
	import cv2
	from multiprocessing import Process

	def send():
	#originals
	#cap_send = cv2.VideoCapture('videotestsrc ! video/x-raw,framerate=20/1 ! videoscale ! videoconvert ! appsink', cv2.CAP_GSTREAMER) #orginal
	#out_send = cv2.VideoWriter('appsrc ! videoconvert ! x264enc tune=zerolatency bitrate=500 speed-preset=superfast ! rtph264pay ! udpsink host=127.0.0.1 port=5000',cv2.CAP_GSTREAMER,0, 20, (320,240), True) #original
	#cap_receive = cv2.VideoCapture('udpsrc port=5000 caps = "application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, payload=(int)96" ! rtph264depay ! decodebin ! videoconvert ! appsink', cv2.CAP_GSTREAMER)
	######

omair18 / commands.sh

Created July 13, 2019 10:40

Various useful Linux commands for daily usage

	#to check video card working right now
	sudo lshw -C video

	#!/bin/bash
	# to know which device is connected at which port

	for sysdevpath in $(find /sys/bus/usb/devices/usb*/ -name dev); do
	(
	syspath="${sysdevpath%/dev}"
	devname="$(udevadm info -q name -p $syspath)"

omair18 / Ubuntu_Setting up Ubuntu on Dell 7559.txt

Created December 19, 2016 07:13 — forked from hemenkapadia/Ubuntu 14.04 on Optimus Laptop.txt

Setting up Ubuntu on Dell 7559

	### NOTE ###

	The below gist is converted to a blog post and available at below link. Refer than instead.

	http://hemenkapadia.github.io/blog/2016/05/07/Ubuntu-with-Nvidia-Bumblebee.html



	#### Note about kernel versions ####
	Between kernel versions 4.2 and 4.4 there are different options that need to bet set

omair18 / pts2pcd

Created July 24, 2016 13:54 — forked from lorinma/pts2pcd

convert pts file to pcd file

	filename="DamagedBeam.pts"
	from numpy import loadtxt
	from numpy import savetxt
	lines = loadtxt(filename,skiprows=1)
	size=str(lines[:,0].size)
	header = "VERSION .7\nFIELDS x y z\nSIZE 4 4 4\nTYPE F F F\nCOUNT 1 1 1\nWIDTH "+size+"\nHEIGHT 1\nVIEWPOINT 0 0 0 1 0 0 0\nPOINTS "+size+"\nDATA ascii"
	pcd=lines[:,[0,1,2]]
	savetxt("DamagedBeam.pcd", pcd, fmt="%f",header=header,comments='')