Facebook HD Video Downloader

Adds a download link for Facebook videos. Works for HD videos. NEW!! Work on all page.

Versión del día 11/07/2016. Echa un vistazo a la versión más reciente.

Tendrás que instalar una extensión para tu navegador como Tampermonkey, Greasemonkey o Violentmonkey si quieres utilizar este script.

You will need to install an extension such as Tampermonkey to install this script.

Necesitarás instalar una extensión como Tampermonkey o Violentmonkey para instalar este script.

Necesitarás instalar una extensión como Tampermonkey o Userscripts para instalar este script.

Necesitará instalar una extensión como Tampermonkey para instalar este script.

Necesitarás instalar una extensión para administrar scripts de usuario si quieres instalar este script.

(Ya tengo un administrador de scripts de usuario, déjame instalarlo)

Necesitará instalar una extensión como Stylus para instalar este estilo.

Necesitará instalar una extensión como Stylus para instalar este estilo.

Necesitará instalar una extensión como Stylus para instalar este estilo.

Necesitará instalar una extensión del gestor de estilos de usuario para instalar este estilo.

Necesitará instalar una extensión del gestor de estilos de usuario para instalar este estilo.

Necesitará instalar una extensión del gestor de estilos de usuario para instalar este estilo.

(Ya tengo un administrador de estilos de usuario, déjame instalarlo)

// ==UserScript==
// @name            Facebook HD Video Downloader
// @description     Adds a download link for Facebook videos. Works for HD videos. NEW!! Work on all page.
// @author          EThaiZone
// @include     http://facebook.com/video.php*
// @include     http://*.facebook.com/video.php*
// @include     https://facebook.com/video.php*
// @include     https://*.facebook.com/video.php*
// @include     http://facebook.com/video/*
// @include     http://*.facebook.com/video/*
// @include     https://facebook.com/video/*
// @include     https://*.facebook.com/video/*
// @include     http://facebook.com/*/videos/*
// @include     http://*.facebook.com/*/videos/*
// @include     https://facebook.com/*/videos/*
// @include     https://*.facebook.com/*/videos/*
// @include     https://*.facebook.com/*
// @version 0.1.6.5
// @namespace https://greasyfork.org/users/3747
// @require http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js
// ==/UserScript==


// My code
(function () {

    function insertAfter(newNode, referenceNode) {
        referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling);
    }
    
    if (typeof jQuery == 'undefined') {
        alert('[Facebook HD Video Downloader]\n\nYour greasemonkey or tampermonkey is too old. Please update.');
        return;
    }

    var patternfbh = /facebook\.com\/(.*?)/;
    if (! document.URL.match(patternfbh)) {
        return;
    }

    jQuery('head').append('<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css">');

var css = "\
.dl {\
    display: inline-block;\
    width: 1em;\
    height: 1em;\
}\
.dl_container {\
    z-index: 9999;\
    position: relative;\
    float: right;\
    margin: 5px 5px 0 0;\
    padding: 2px 4px 2px 4px;\
    background: white;\
    border-radius: 4px;\
    opacity: 0.5;\
    transition: opacity .25s ease-in-out;\
    -moz-transition: opacity .25s ease-in-out;\
    -webkit-transition: opacity .25s ease-in-out;\
    color: black !important;\
    text-decoration: none;\
    display: block;\
}\
span[display=\"inline\"] .dl_container {\
    margin: 5px 30px 0 0;\
    display: none !important;\
}\
.dl_container:hover {\
    opacity: 1;\
    text-decoration: none;\
}\
";

    jQuery('head').append('<style type="text/css">' + css + '</style>');

    var iconDownload = jQuery('<div/>');
    iconDownload = jQuery('<i class="fa fa-download dl"></i>');
    
    function renderFBDownloader(counter) {

        // Get the base so we can append to it later
        var base = jQuery('.comment_link').parent('span').parent('div');
        if (base.length === 0) {
            base = jQuery('.UFILikeLink').parent('div').parent('span').parent('div'); // check link like 
        }
        if (base.length === 0) {
            base = jQuery('.userContent'); // or else I will attach to userContent.
        }
        base = base[0];

        /*
         * NOTE: Don't use jquery on <video>, it will broke them.
         */

        // Get all the <embed> elements
        var videoElements = document.querySelectorAll('video:not([fb_download_link_ethaizone])');
        var embedElements = document.querySelectorAll('embed[flashvars]');

        for (var i = 0; i < videoElements.length; i++) {

            var embed = videoElements[i].querySelectorAll('embed[flashvars]');

            if (embed.length === 0) {
                continue;
            }

            videoElements[i].setAttribute('fb_download_link_ethaizone', '1');

            embed = embed[0];

            // Get the flashvars attribute and decode it
            var flashvars = decodeURIComponent(embed.getAttribute('flashvars'));

            // Check if this string contains the code we're looking for
            var hd_src_index = flashvars.indexOf('hd_src');
            var p_width_index = flashvars.indexOf('&width=');
            if (hd_src_index > -1 && p_width_index > -1) {
                // This string contains the payload we are looking for so parse it
                var obj = JSON.parse(flashvars.slice(7, p_width_index));

                if (typeof obj.video_data.progressive == 'undefined') {
                    log('Something wrong in obj.');
                    console.log(obj);
                    continue;
                }
                var video_data = obj.video_data.progressive;

                //console.log(video_data);
                
                if (typeof video_data.video_id == 'undefined') {
                    console.log(video_data);
                } else {
                    var title = video_data.video_id;
                }
                //var title = document.querySelectorAll('h2.uiHeaderTitle')[0].innerText;

                // thank css style from fork of nhtera.
                var link = jQuery('<a/>');
                link.addClass('dl_container');
                link.addClass('fbPhotosPhotoActionsItem');
                link.addClass('fb_download_link_ethaizone');
                link.attr('fb_download_link_ethaizone');
                link.append(iconDownload[0].outerHTML);
                link.append('&nbsp;');

                var labelText = null;
                var downloadUrl = null;
                var filename = null;

                // High Def
                if (typeof video_data.hd_src != 'undefined' && video_data.hd_src) {
                    labelText = 'Download (HD)';
                    filename = title + '_hd.mp4';
                    downloadUrl = video_data.hd_src;
                } else if (typeof video_data.sd_src != 'undefined' && video_data.sd_src) {
                    labelText = 'Download (SD)';
                    filename = title + '_sd.mp4';
                    downloadUrl = video_data.sd_src;
                }

                if (downloadUrl) {
                    link.append('<span class="status">' + labelText + '</span>');
                    link.prop('download', filename);
                    link.prop('href', downloadUrl);
                    link.prop('target', '_blank');
                    // link.hide();
                    // insertAfter(link[0], videoElements[i]);
                    // videoElements[i].parentElement.addEventListener("mouseover", function(){
                    //     link.show();
                    // });
                    // videoElements[i].parentElement.addEventListener("mouseout", function(){
                    //     link.hide();
                    // });
                } else {
                    log('Something wrong in video_data.');
                    console.log(video_data);
                    continue;
                }

                log('Success.');
            } // end if

        } // end loop

        return videoElements.length;
    }

    var counter = 0;
    var delay = 1500;
    function doExec() {
        if (jQuery('#mainContainer').length < 1) {
            // log('No maincontaimer.');
            return false;
        }
        counter++;
        try {
            var found = renderFBDownloader(counter);
            // if (found !== 0 && delay == 1000) {
            //     delay = 3000;
            //     log('First found. Decrease delay. ('+ delay +')');
            // }

            // if (counter > 10 && delay == 1000) {
            //     delay = 5000;
            //     log('Too long and not found anything. Decrease delay. ('+ delay +')');
            // }
            // if (counter < 30) {
            //     setTimeout(doExec, delay);
            // }
            setTimeout(doExec, delay);
            // log('Check!! No:'+counter+' Found: ' + renderFBDownloader(counter));
        } catch(e) {
            log("Found error!");
            console.log(e);
            //setTimeout(doExec, 1000);
        }

        return true;
    }

    function log(msg) {
        //alert(msg);
        console.log("[FB Video Downloader] " + msg);
    }
    if (doExec()) {
        var myVersion = GM_info.script.version;
        log("First start. Version "+myVersion);
    }
})();