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ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

Convert WAV to MP3, mix down to mono (use 1 audio channel), set bit rate to 64 kbps and sample rate to 22050 Hz:

mirsahib

A simple guide to have running the os161 kernel in Arch Linux

This are some notes for the course OS 161 from ops-class.org (based on the OS 161 course from Harvard).

#Geting started

You will need some tools. A nice Text Editor or a fancy IDE for C, I usually go for gedit, or sometimes vim.

Then you will need to install all the toolchain for the course plus some other tools

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function brightness()
    I = imread('AtlasMercury.tiff');
    J=I;
    %increase brightness
    [r,c,l] = size(I);
    g = 100;%transformed value
    for i=1:l
      for j =1:r
        for k=1:c
          if(I(j,k,i)+g<256)

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function contrast()
    I = imread('AtlasMercury.tiff');
    J=I;
    [r,c,l] = size(I);
    a = 1.5;%transformed value
    I = double(I);
    for i=1:l
      for j =1:r
        for k=1:c
          t = ceil(((a*I(j,k,i))-127)+127);

mirsahib

#include<pthread.h>
#include<stdio.h>
#include<stdlib.h>

pthread_mutex_t x,wsem;
pthread_t tid;
int readcount;

void intialize()

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var Student = new Array();

$(document).ready(function(){
  $.ajax({
    url: "http://localhost/public_html/Final_project/student_2017.php",
    method:"GET",
    success:function (data) {
      console.log(data);
      for(i in data){
        Student.push(data[i]);

mirsahib

try:
	import Queue as Q
except:
	import queue as Q

class node:

	def __init__(self,nodeId,cost,predecessor,visited):
		self.nodeId = nodeId
		self.cost = cost

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mirsahib

$(document).ready(function() {
  loadApiData(function showApiData() {
    
    //display the localstorage data
    nowPlaying = JSON.parse(localStorage.getItem("now_playing"));
    upComming = JSON.parse(localStorage.getItem("upcomming"));
    popular = JSON.parse(localStorage.getItem("popular"));
    console.log(nowPlaying);
    console.log(upComming);
    console.log(popular);

mirsahib

//database setting
var db_url =
  "mongodb+srv://mirsahib24:[email protected]/rotten-pumpkin?retryWrites=true&w=majority";
mongoose.connect(db_url, { useNewUrlParser: true });

mongoose.connection.on("error", function(err) {
  console.log(err);
  console.log("Could not connect to mongodb");
});