☰

SBS VOD FFMPEG details parser

Click the FFMPEG button and it will either show you the details needed to download with FFMPEG or it will give you the direct download link.

当前为 2015-02-07 提交的版本，查看 最新版本。

// ==UserScript==
// @name        SBS VOD FFMPEG details parser
// @namespace   sbs
// @description Click the FFMPEG button and it will either show you the details needed to download with FFMPEG or it will give you the direct download link.
// @include     http://www.sbs.com.au/ondemand/video/*
// @version     0.8
// @grant       GM_xmlhttpRequest
// @grant       GM_addStyle
// @grant       GM_registerMenuCommand
// @noframes
// ==/UserScript==

function createInitButton(){

    let menuTab = document.createElement('li');
    menuTab.setAttribute('class', 'vod_menu_tab');

    let menuItem = document.createElement('a');
    menuItem.setAttribute('class', 'vod_menu_item');
    menuItem.innerHTML = "FFMPEG";

    menuTab.appendChild(menuItem);

    let vMenu = document.querySelector('.vod_menu');

    if(vMenu){
        vMenu.appendChild(menuTab);

        menuTab.addEventListener('mouseup', function(e) {
            parseScripts();
        }, false);

    }

}

GM_registerMenuCommand("Get FFMPEG details", parseScripts);

function parseScripts(){

    let scripts = document.querySelectorAll('script');

    [].forEach.call(scripts, function(item, index, arr){

        let scText = item.textContent;

        if(scText.indexOf('playerParams')>-1){
            let firstSlice = scText.slice(scText.indexOf('playerParams.releaseUrls'));
            let secondSlice = firstSlice.slice(firstSlice.indexOf('http'));
            let initialPlaylistURL = secondSlice.slice(0,secondSlice.indexOf("'"));
            getFirstM3U(initialPlaylistURL);
        }
    });

}

function getFirstM3U(initialPlaylistURL){

    GM_xmlhttpRequest({
        method: "GET",
        url: initialPlaylistURL,
        onload: function(response) {

            let xhrResponse = response.responseText;
            let parser = new DOMParser();
            let xml = parser.parseFromString(xhrResponse, "application/xml");
            let xmlVideoElem = xml.querySelector('video');
            let xmlVideoSrc = xmlVideoElem.getAttribute('src');
            let videoTitle = xmlVideoElem.getAttribute('title');
            let sanitizedTitle = sanitizeTitle(videoTitle);

            //if it's an M3U playlist
            if(xml.querySelector('meta[name="refreshToken"]')){
                getSecondM3U(xmlVideoSrc, sanitizedTitle);
            }
            else{   //else it's a direct download
                let availableVideoBandwidth = [];
                let streamURLS = [];
                let subtitleElem = xml.querySelector('textstream[type="text/srt"]');
                let subtitle = null;
                //sometimes there's no subtitle, so check first
                if(subtitleElem){
                    subtitle = subtitleElem.getAttribute('src');
                }
                let vidSourceSlice = xmlVideoSrc.slice(0, xmlVideoSrc.indexOf('.mp4')+4);
                let sliceForBandwidthArr = vidSourceSlice.slice(vidSourceSlice.indexOf(',')+1, vidSourceSlice.lastIndexOf(','));
                let bandwidthArray = sliceForBandwidthArr.split(',');
                let vidStartingURL = 'http://sbsauvod-f.akamaihd.net/SBS_Production'+vidSourceSlice.slice(vidSourceSlice.indexOf('/managed/')).split(',')[0];

                bandwidthArray.forEach(function(item, index, arr){
                    streamURLS.push(vidStartingURL+item+'K.mp4?v=&fp=&r=&g=');
                    availableVideoBandwidth.push(item);
                });

                let isM3U = false;

                createModal(isM3U, sanitizedTitle, subtitle, streamURLS, availableVideoBandwidth, null);
            }

        },
        onerror: function(response) {
            console.log(response);
        }
    });

}

function getSecondM3U(xmlVideoSrc, sanitizedTitle){

    GM_xmlhttpRequest({
        method: "GET",
        url: xmlVideoSrc,
        onload: function(res) {

            let xhrResp = res.responseText;
            let streamURLS = [];
            let availableVideoBandwidth = [];
            let availableVideoResolution = [];

            xhrResp.split('\n').forEach(function(item, index, arr){
                let textTrim = item.trim();
                //return if it's an empty string or the #EXTM3U
                if(!textTrim.length || textTrim.startsWith('#EXTM3U')){
                    return;
                }
                if(textTrim.startsWith('#EXT-X-STREAM-INF')){
                    availableVideoBandwidth.push(textTrim.split('BANDWIDTH=')[1].split(',')[0]);
                    availableVideoResolution.push(textTrim.split('RESOLUTION=')[1].split(',')[0]);
                }
                if(textTrim.startsWith('https')){
                    streamURLS.push(item);
                }
            });

            let firstSlice = streamURLS[0].slice(0, streamURLS[0].indexOf(','));
            let showNum = firstSlice.slice(firstSlice.indexOf('_')+1, firstSlice.lastIndexOf('_'));
            let showDate = firstSlice.slice(firstSlice.indexOf('/managed/')+9, firstSlice.lastIndexOf('/'));
            let subtitle = 'http://videocdn.sbs.com.au/u/video/SBS/managed/closedcaptions/'+showDate+'/'+showNum+'.srt';
            let isM3U = true;

            createModal(true, sanitizedTitle, subtitle, streamURLS, availableVideoBandwidth, availableVideoResolution);

        },
        onerror: function(res) {
            console.log(msg);
        }
    });

}

function sanitizeTitle(vTitle){
    //try to sanitize the title a bit
    let sanitizedTitle = '';

    for (let i = 0, len = vTitle.length; i < len; i++) {
        sanitizedTitle +=vTitle[i].replace(/[^a-zA-Z0-9]/,"_");
    }
    return sanitizedTitle;

}

function createModal(isM3U, sanitizedTitle, subtitle, streamURLS, availableVideoBandwidth, availableVideoResolution){

    let modalStyles = ""+
        "#gm_modalContainer {"+
        "    height: 100%;"+
        "   width: 100%;"+
        "    overflow: auto;"+
        "    margin: auto;"+
        "    position: absolute;"+
        "    z-index: 100;"+
        "    background: rgba(0,0,0,.5);"+
        "    top: 0;"+
        "    left: 0;"+
        "    bottom: 0;"+
        "    right: 0;"+
        "}"+
        "#gm_modal{"+
        "    background-color: grey;"+
        "    border: 10px solid grey;"+
        "    bottom: 0;"+
        "    display: flex;"+
        "    flex-direction: row;"+
        "    height: 360px;"+
        "    left: 0;"+
        "    margin: auto;"+
        "    overflow: auto;"+
        "    position: absolute;"+
        "    right: 0;"+
        "    top: 0;"+
        "    width: 800px;"+
        "}"+
        "#gm_button_containers {"+
        "    display: flex;"+
        "    flex-direction: column;"+
        "}"+
        "#gm_textArea {"+
        "    margin-left: 20px;"+
        "    width: 680px;"+
        "}"+
        "#gm_closeModal {"+
        "    color: black;"+
        "    font-size: 5em;"+
        "    height: 20px;"+
        "    margin-left: 25px;"+
        "    margin-top: -18px;"+
        "}"+
        "#gm_closeModal:hover {"+
        "    text-decoration: none;"+
        "}"+
        ".gm_modalButtons {"+
        "    cursor: pointer;"+
        "    margin-bottom: 10px;"+
        "    margin-right: 10px;"+
        "    padding: 5px;"+
        "    text-align: left;"+
        "    border: 2px solid white;"+
        "    color: white;"+
        "    font-size: 1.2em;"+
        "}"+
        ".gm_modalButtons:hover {"+
        "    border: 2px solid blue;"+
        "}"+
        ".gm_vidDownLink{"+
        "    color: white;"+
        "    font-size: 2em;"+
        "    margin-bottom: 10px;"+
        "    text-decoration: none;"+
        "    margin-right: 10px;"+
        "}"+
        "#gm_subDownLink {"+
        "    color: white;"+
        "    font-size: 2em;"+
        "    margin-bottom: 10px;"+
        "    text-decoration: none;"+
        "}"+
        "#gm_subDownLink:hover {"+
        "    text-decoration: underline;"+
        "}";

    GM_addStyle(modalStyles);

    let modalContainer = document.createElement('div');
    modalContainer.setAttribute('id', 'gm_modalContainer');

    let gmModal = document.createElement('div');
    gmModal.setAttribute('id', 'gm_modal');

    let gmButtonCon = document.createElement('div');
    gmButtonCon.setAttribute('id', 'gm_button_containers');

    gmModal.appendChild(gmButtonCon);

    let gmcloseModal = document.createElement('a');
    gmcloseModal.setAttribute('id', 'gm_closeModal');
    gmcloseModal.innerHTML = '&#10005';

    let subDownLink;

    if(subtitle){

        subDownLink = document.createElement('a');
        subDownLink.setAttribute('id', 'gm_subDownLink');
        subDownLink.setAttribute('href', subtitle);

        let subDownFileName = sanitizedTitle+'.srt';
        subDownLink.setAttribute('download', subDownFileName);
        subDownLink.innerHTML = 'Download Subtitles';

    }

    modalContainer.appendChild(gmModal);

    if(isM3U){

        let gmTextArea = document.createElement('textarea');
        gmTextArea.setAttribute('id', 'gm_textArea');

        gmModal.appendChild(gmTextArea);

        if(subtitle){
            subDownLink.setAttribute('style', 'font-size: 1.3em;text-align: left;');
        }
        //sort them, sometimes the highest bandwidth one isn't the first
        let videos = {};

        availableVideoBandwidth.forEach(function(item, index, arr){
            videos[Number(item)] = {
                bandwidth: item,
                url: streamURLS[index],
                resolution: availableVideoResolution[index]
            }
        });

        let vidBandNumberArr = availableVideoBandwidth.map(function(item, index, arr){
            return Number(item);
        }).sort(function(a, b) {
            return b - a;
        });

        vidBandNumberArr.forEach(function(item, index, arr){
            let buttonDiv = document.createElement('div');
            buttonDiv.setAttribute('class', 'gm_modalButtons');
            buttonDiv.setAttribute('data-streamurl', videos[item].url);

            let bandwidthDetails = document.createElement('div');
            bandwidthDetails.innerHTML = 'Video Bandwidth: '+videos[item].bandwidth;

            let resolutionDetails = document.createElement('div');
            resolutionDetails.innerHTML = 'Resolution: '+videos[item].resolution;

            buttonDiv.appendChild(bandwidthDetails);
            buttonDiv.appendChild(resolutionDetails);

            gmButtonCon.appendChild(buttonDiv);

            buttonDiv.addEventListener('mouseup', function(e) {
                let streamAtt = decodeURIComponent(e.currentTarget.getAttribute('data-streamurl'));
                gmTextArea.value = 'ffmpeg -i "'+streamAtt+'" -c copy '+sanitizedTitle+'.ts';
            }, false);

        });

    }
    else{

        gmButtonCon.setAttribute('style', 'flex-direction: row;');

        streamURLS.forEach(function(item, index, arr){
            let vidDownLink = document.createElement('a');
            vidDownLink.setAttribute('class', 'gm_vidDownLink');
            vidDownLink.setAttribute('href', item);

            let vidDownFileName = sanitizedTitle+'.mp4';

            vidDownLink.setAttribute('download', vidDownFileName);
            vidDownLink.innerHTML = 'Download '+availableVideoBandwidth[index]+'K';

            gmButtonCon.appendChild(vidDownLink);
        });

        if(subtitle){
            gmButtonCon.appendChild(subDownLink);
        }
    }
    //append subtitle-doesn't seem to work for non direct downloads
    //gmButtonCon.appendChild(subDownLink);

    gmModal.appendChild(gmcloseModal);

    gmcloseModal.addEventListener('click', function(e) {
        e.preventDefault();
        document.body.removeChild(modalContainer);
    }, false);

    document.body.appendChild(modalContainer);
}

createInitButton();