prof3ssorSt3v3

const APP = {
  deferredInstall: null,
  init() {
    if ('serviceWorker' in navigator) {
      //register our service worker
      navigator.serviceWorker
        .register('/sw.js', {
          updateViaCache: 'none',
          scope: '/',
        })

Rafat97

📼 FFMPEG Command 📼

rowe-morehouse

# To extract the sound from a video and save it as MP3:
ffmpeg -i <video.mp4> -vn <sound>.mp3

# To convert frames from a video or GIF into individual numbered images:
ffmpeg -i <video.mpg|video.gif> <frame_%d.png>

# To combine numbered images (frame_1.jpg, frame_2.jpg, etc) into a video or GIF:
ffmpeg -i <frame_%d.jpg> -f image2 <video.mpg|video.gif>

# To quickly extract a single frame from a video at time mm:ss and save it as a 128x128 resolution image:

jmatthewturner

#!/bin/bash

# This script uses ffmpeg to transcode video files into one of a few formats suitable for
# editing in either DaVinci Resolve or Lightworks on a Linux machine. It's purpose is to 
# simplify my life and relieve me from having to look up and enter the same very long
# command over and over.
#
# If run with argument "all", the script will prompt for a directory containing video files, and
# transcode all video files in the directory into the selected format. If run with a file as an
# argument, it will transcode only that file, and will provide the additional option of 

Ardrete

#!/bin/bash

# check file for AVC encoding and flv, wmv, or mkv wrapper and rewrap in mp4 container
# 	otherwise, if not already am mp4, transcode to AVC mp4
########
# usage:
# z264 <file>
# z264 *
# z264 *.ext
# z264 */*

lakuapik

<?php

header('Content-Type: application/json');

function get_uptime()
{
    $str   = @file_get_contents('/proc/uptime');
    $num   = floatval($str);
    $secs  = (int) fmod($num, 60); $num = intdiv($num, 60);
    $mins  = $num % 60;      $num = intdiv($num, 60);

fernandovega

# find the IP addresses of many hosts on the network
# step 1. obtain the broadcast address from ifconfig
# step 2. ping the broadcast address
$ ifconfig -a | grep broadcast
    inet 192.168.1.102 netmask 0xffffff00 broadcast 192.168.1.255
    inet 192.168.68.1 netmask 0xffffff00 broadcast 192.168.68.255
    inet 192.168.174.1 netmask 0xffffff00 broadcast 192.168.174.255
$ ping 192.168.1.255
    PING 192.168.1.255 (192.168.1.255): 56 data bytes
    64 bytes from 192.168.1.1: icmp_seq=0 ttl=64 time=0.634 ms

stoyanovgeorge

#!/bin/bash

INT=2; RXDIR=/sys/class/net/eth0/statistics/rx_bytes; TXDIR=/sys/class/net/eth0/statistics/tx_bytes; RXSTART=$(cat $RXDIR); TXSTART=$(cat $TXDIR); sleep $INT; RXEND=$(cat $RXDIR); TXEND=$(cat $TXDIR); RXBPS="$(((RXEND-RXSTART)/INT))"; TXBPS="$(((TXEND-TXSTART)/INT))"; echo "$RXBPS" "$TXBPS"

nicolas-cusan

Video encoding and coversion with ffmpeg

Based on https://evilmartians.com/chronicles/better-web-video-with-av1-codec

h264

ffmpeg -i SOURCE.mov -map_metadata -1 -c:a libfdk_aac -c:v libx264 -crf 24 -preset veryslow -profile:v main -pix_fmt yuv420p -movflags +faststart -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" video.h264.mp4

tingplenting

Extract audio from a YouTube video file

ffmpeg -i INPUT.mp4 -ab 256k OUTPUT.mp3

Cut 3s length

ffmpeg -y -ss 00:00:03 -i INPUT.mp4 -codec copy OUTPUT.mp4