joe-oli

# Create a new caption file

~~~~~~~~
ffmpeg -i captions.srt captions.ass
~~~~~~~~

# Add subtitles to main video without changing it

~~~~~~~~
ffmpeg -i video.mp4  -vf "subtitles=captions.ass:force_style='OutlineColour=&H80000000,BorderStyle=4,Outline=1,Shadow=0,MarginV=20'" subtitled-video.mp4

joe-oli

/*jslint devel: true, browser: true, es5: true */
/*global Promise */

var promiseCount = 0;

function testPromise() {
    'use strict';
    
    promiseCount += 1;
    var thisPromiseCount = promiseCount;

joe-oli

/*jslint devel: true, browser: true, es5: true */
/*global Promise */

// $http function is implemented in order to follow the standard Adapter pattern
function $http(url) {
    'use strict';
    
    var core = {
        // Method that performs the ajax request
        ajax : function (method, url, args) {

joe-oli

/*jslint devel: true, browser: true, es5: true */
/*global Promise */

function imgLoad(url) {
    'use strict';
    // Create new promise with the Promise() constructor;
    // This has as its argument a function with two parameters, resolve and reject
    return new Promise(function (resolve, reject) {
        // Standard XHR to load an image
        var request = new XMLHttpRequest();

joe-oli

user:joe-oli ffmpeg

joe-oli

/// <summary>
/// Waits asynchronously for the process to exit.
/// </summary>
/// <param name="process">The process to wait for cancellation.</param>
/// <param name="cancellationToken">A cancellation token. If invoked, the task will return 
/// immediately as canceled.</param>
/// <returns>A Task representing waiting for the process to end.</returns>
public static Task WaitForExitAsync(this Process process, 
    CancellationToken cancellationToken = default(CancellationToken))
{

joe-oli

public static class ProcessHelper
{
    public static ProcessResult ExecuteShellCommand(string command, string arguments, int timeout)
    {
        var result = new ProcessResult();

        using (var process = new Process())
        {
            process.StartInfo.FileName = command;
            process.StartInfo.Arguments = arguments;

joe-oli

using System;
using System.Diagnostics;
using System.Text;
using System.Threading.Tasks;

public static class ProcessAsyncHelper
{
    public static async Task<ProcessResult> ExecuteShellCommand(string command, string arguments, int timeout)
    {
        var result = new ProcessResult();

joe-oli

----------------------------------------------------------------------------------------------------------------------------------
Converting a series of jpeg images to a mp4 video:

ffmpeg.exe -f image2 -r 3 -i %06d.jpeg -r 15 -vcodec mpeg4 -s 352x240 Camera-0.avi

-f image2 => input format
-r 3 => input framerate
-i %06d.jpeg => input mask (files must be named sequencially, with 6 digits. Ex: "000000.jpeg", "000001.jpeg", "000002.jpeg", etc)
-vcodec mpeg4 => video output codec 
-s 352x240 => resolution

joe-oli

@REM bin\ffprobe -v quiet -print_format json -show_format -show_streams^
@REM	"D:\path\to\myfile.mp4" 

bin\ffprobe -v quiet -show_streams^
	"D:\path\to\myfile.mp4"
  
 @REM *** NOTE THE USE OF THE carret^ at the end of the line you wish to continue ***