X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=src%2Fvideo.cpp;h=05d9761b58eb52ea899706c959587dd49114d466;hb=HEAD;hp=ce351105601cb33c691b8ee73d281f44092d7fe7;hpb=8f1c0e9e0547b478101879342ef240c7e4fae8d1;p=minitube

diff --git a/src/video.cpp b/src/video.cpp
index ce35110..3a79f7a 100644
--- a/src/video.cpp
+++ b/src/video.cpp
@@ -19,475 +19,216 @@ along with Minitube.  If not, see <http://www.gnu.org/licenses/>.
 $END_LICENSE */
 
 #include "video.h"
-#include "networkaccess.h"
-#include <QtNetwork>
-#include "videodefinition.h"
+#include "datautils.h"
+#include "http.h"
+#include "httputils.h"
 #include "jsfunctions.h"
+#include "playlistitemdelegate.h"
+#include "videodefinition.h"
 
-namespace The {
-NetworkAccess* http();
-}
+#include "ytjsvideo.h"
+#include "ytvideo.h"
 
-namespace {
-    static const QString jsNameChars = "a-zA-Z0-9\\$_";
+#include "variantpromise.h"
+
+Video::Video()
+    : duration(0), viewCount(-1), license(LicenseYouTube), definitionCode(0), ytVideo(nullptr),
+      ytjsVideo(nullptr) {}
+
+Video::~Video() {
+    qDebug() << "Deleting" << id;
 }
 
-Video::Video() : m_duration(0),
-    m_viewCount(-1),
-    definitionCode(0),
-    elIndex(0),
-    ageGate(false),
-    m_license(LicenseYouTube),
-    loadingStreamUrl(false),
-    loadingThumbnail(false)
-{ }
+Video *Video::clone() {
+    Video *clone = new Video();
+    clone->title = title;
+    clone->description = description;
+    clone->channelTitle = channelTitle;
+    clone->channelId = channelId;
+    clone->webpage = webpage;
+    clone->streamUrl = streamUrl;
+    clone->thumbs = thumbs;
+    clone->thumbsNeedSorting = thumbsNeedSorting;
+    clone->duration = duration;
+    clone->formattedDuration = formattedDuration;
+    clone->published = published;
+    clone->formattedPublished = formattedPublished;
+    clone->viewCount = viewCount;
+    clone->formattedViewCount = formattedViewCount;
+    clone->id = id;
+    clone->definitionCode = definitionCode;
+    return clone;
+}
 
-Video* Video::clone() {
-    Video* cloneVideo = new Video();
-    cloneVideo->m_title = m_title;
-    cloneVideo->m_description = m_description;
-    cloneVideo->m_author = m_author;
-    cloneVideo->m_userId = m_userId;
-    cloneVideo->m_webpage = m_webpage;
-    cloneVideo->m_streamUrl = m_streamUrl;
-    cloneVideo->m_thumbnail = m_thumbnail;
-    cloneVideo->m_thumbnailUrl = m_thumbnailUrl;
-    cloneVideo->m_mediumThumbnailUrl = m_mediumThumbnailUrl;
-    cloneVideo->m_duration = m_duration;
-    cloneVideo->m_published = m_published;
-    cloneVideo->m_viewCount = m_viewCount;
-    cloneVideo->videoId = videoId;
-    cloneVideo->videoToken = videoToken;
-    cloneVideo->definitionCode = definitionCode;
-    return cloneVideo;
+const QString &Video::getWebpage() {
+    if (webpage.isEmpty() && !id.isEmpty())
+        webpage.append("https://www.youtube.com/watch?v=").append(id);
+    return webpage;
 }
 
-void Video::setWebpage(QUrl webpage) {
-    m_webpage = webpage;
+void Video::setWebpage(const QString &value) {
+    webpage = value;
 
     // Get Video ID
-    // youtube-dl line 428
-    // QRegExp re("^((?:http://)?(?:\\w+\\.)?youtube\\.com/(?:(?:v/)|(?:(?:watch(?:\\.php)?)?\\?(?:.+&)?v=)))?([0-9A-Za-z_-]+)(?(1).+)?$");
-    QRegExp re("^https?://www\\.youtube\\.com/watch\\?v=([0-9A-Za-z_-]+).*");
-    bool match = re.exactMatch(m_webpage.toString());
-    if (!match || re.numCaptures() < 1) {
-        qWarning() << QString("Cannot get video id for %1").arg(m_webpage.toString());
-        // emit errorStreamUrl(QString("Cannot get video id for %1").arg(m_webpage.toString()));
-        // loadingStreamUrl = false;
-        return;
+    if (id.isEmpty()) {
+        QRegExp re(JsFunctions::instance()->videoIdRE());
+        if (re.indexIn(webpage) == -1) {
+            qWarning() << QString("Cannot get video id for %1").arg(webpage);
+            // emit errorStreamUrl(QString("Cannot get video id for %1").arg(m_webpage.toString()));
+            // loadingStreamUrl = false;
+            return;
+        }
+        id = re.cap(1);
     }
-    videoId = re.cap(1);
 }
 
-void Video::loadThumbnail() {
-    if (m_thumbnailUrl.isEmpty() || loadingThumbnail) return;
-    loadingThumbnail = true;
-    QObject *reply = The::http()->get(m_thumbnailUrl);
-    connect(reply, SIGNAL(data(QByteArray)), SLOT(setThumbnail(QByteArray)));
+void Video::setDuration(int value) {
+    duration = value;
+    formattedDuration = DataUtils::formatDuration(duration);
 }
 
-void Video::setThumbnail(QByteArray bytes) {
-    loadingThumbnail = false;
-    m_thumbnail.loadFromData(bytes);
-    if (m_thumbnail.width() > 160)
-        m_thumbnail = m_thumbnail.scaledToWidth(160, Qt::SmoothTransformation);
-    emit gotThumbnail();
+void Video::setViewCount(int value) {
+    viewCount = value;
+    formattedViewCount = DataUtils::formatCount(viewCount);
 }
 
-void Video::loadMediumThumbnail() {
-    if (m_mediumThumbnailUrl.isEmpty()) return;
-    QObject *reply = The::http()->get(m_mediumThumbnailUrl);
-    connect(reply, SIGNAL(data(QByteArray)), SIGNAL(gotMediumThumbnail(QByteArray)));
+void Video::setPublished(const QDateTime &value) {
+    published = value;
+    formattedPublished = DataUtils::formatDateTime(published);
 }
 
-void Video::loadStreamUrl() {
-    if (loadingStreamUrl) {
-        qDebug() << "Already loading stream URL for" << this->title();
-        return;
+void Video::streamUrlLoaded(const QString &streamUrl, const QString &audioUrl) {
+    qDebug() << "Streams loaded";
+    this->streamUrl = streamUrl;
+    emit gotStreamUrl(streamUrl, audioUrl);
+    if (ytVideo) {
+        definitionCode = ytVideo->getDefinitionCode();
+        ytVideo->deleteLater();
+        ytVideo = nullptr;
     }
-    loadingStreamUrl = true;
-    elIndex = 0;
-    ageGate = false;
-
-    getVideoInfo();
-}
-
-void  Video::getVideoInfo() {
-    static const QStringList elTypes = QStringList() << "&el=embedded" << "&el=detailpage" << "&el=vevo" << "";
-
-    QUrl videoInfoUrl;
-
-    if (elIndex == elTypes.size()) {
-        // qDebug() << "Trying special embedded el param";
-        videoInfoUrl = QUrl("http://www.youtube.com/get_video_info");
-        videoInfoUrl.addQueryItem("video_id", videoId);
-        videoInfoUrl.addQueryItem("el", "embedded");
-        videoInfoUrl.addQueryItem("gl", "US");
-        videoInfoUrl.addQueryItem("hl", "en");
-        videoInfoUrl.addQueryItem("eurl", "https://youtube.googleapis.com/v/" + videoId);
-        videoInfoUrl.addQueryItem("asv", "3");
-        videoInfoUrl.addQueryItem("sts", "1588");
-    } else if (elIndex > elTypes.size() - 1) {
-        qWarning() << "Cannot get video info";
-        loadingStreamUrl = false;
-        emit errorStreamUrl("Cannot get video info");
-        return;
-    } else {
-        // qDebug() << "Trying el param:" << elTypes.at(elIndex) << elIndex;
-        videoInfoUrl = QUrl(QString(
-                                "http://www.youtube.com/get_video_info?video_id=%1%2&ps=default&eurl=&gl=US&hl=en"
-                                ).arg(videoId, elTypes.at(elIndex)));
+    if (ytjsVideo) {
+        definitionCode = ytjsVideo->getDefinitionCode();
+        ytjsVideo->deleteLater();
+        ytjsVideo = nullptr;
     }
-
-    QObject *reply = The::http()->get(videoInfoUrl);
-    connect(reply, SIGNAL(data(QByteArray)), SLOT(gotVideoInfo(QByteArray)));
-    connect(reply, SIGNAL(error(QNetworkReply*)), SLOT(errorVideoInfo(QNetworkReply*)));
-
-    // see you in gotVideoInfo...
 }
 
-void  Video::gotVideoInfo(QByteArray data) {
-    QString videoInfo = QString::fromUtf8(data);
-    // qDebug() << "videoInfo" << videoInfo;
-
-    // get video token
-    QRegExp re = QRegExp("^.*&token=([^&]+).*$");
-    bool match = re.exactMatch(videoInfo);
-    // handle regexp failure
-    if (!match || re.numCaptures() < 1) {
-        // qDebug() << "Cannot get token. Trying next el param";
-        // Don't panic! We're gonna try another magic "el" param
-        elIndex++;
-        getVideoInfo();
+void Video::loadStreamUrlJS() {
+    if (ytjsVideo) {
+        qDebug() << "Already loading" << id;
         return;
     }
-
-    QString videoToken = re.cap(1);
-    while (videoToken.contains('%'))
-        videoToken = QByteArray::fromPercentEncoding(videoToken.toAscii());
-    // qDebug() << "videoToken" << videoToken;
-    this->videoToken = videoToken;
-
-    // get fmt_url_map
-    re = QRegExp("^.*&url_encoded_fmt_stream_map=([^&]+).*$");
-    match = re.exactMatch(videoInfo);
-    // handle regexp failure
-    if (!match || re.numCaptures() < 1) {
-        // qDebug() << "Cannot get urlMap. Trying next el param";
-        // Don't panic! We're gonna try another magic "el" param
-        elIndex++;
-        getVideoInfo();
+    ytjsVideo = new YTJSVideo(id, this);
+    connect(ytjsVideo, &YTJSVideo::gotStreamUrl, this, &Video::streamUrlLoaded);
+    connect(ytjsVideo, &YTJSVideo::errorStreamUrl, this, [this](const QString &msg) {
+        qDebug() << msg;
+        ytjsVideo->deleteLater();
+        ytjsVideo = nullptr;
+        // loadStreamUrlYT();
+        emit errorStreamUrl(msg);        
+    });
+    ytjsVideo->loadStreamUrl();
+}
+
+void Video::loadStreamUrlYT() {
+    if (ytVideo) {
+        qDebug() << "Already loading" << id;
         return;
     }
-
-    // qDebug() << "Got token and urlMap" << elIndex;
-
-    QString fmtUrlMap = re.cap(1);
-    fmtUrlMap = QByteArray::fromPercentEncoding(fmtUrlMap.toUtf8());
-    parseFmtUrlMap(fmtUrlMap);
+    ytVideo = new YTVideo(id, this);
+    connect(ytVideo, &YTVideo::gotStreamUrl, this, &Video::streamUrlLoaded);
+    connect(ytVideo, &YTVideo::errorStreamUrl, this, [this](const QString &msg) {
+        qDebug() << msg;
+        emit errorStreamUrl(msg);
+        ytVideo->deleteLater();
+        ytVideo = nullptr;
+    });
+    ytVideo->loadStreamUrl();
 }
 
-void Video::parseFmtUrlMap(const QString &fmtUrlMap, bool fromWebPage) {
-    QSettings settings;
-    QString definitionName = settings.value("definition", "360p").toString();
-    int definitionCode = VideoDefinition::getDefinitionCode(definitionName);
-
-    // qDebug() << "fmtUrlMap" << fmtUrlMap;
-    QStringList formatUrls = fmtUrlMap.split(',', QString::SkipEmptyParts);
-    QHash<int, QString> urlMap;
-    foreach(QString formatUrl, formatUrls) {
-        // qDebug() << "formatUrl" << formatUrl;
-        QStringList urlParams = formatUrl.split('&', QString::SkipEmptyParts);
-        // qDebug() << "urlParams" << urlParams;
-
-        int format = -1;
-        QString url;
-        QString sig;
-        foreach(QString urlParam, urlParams) {
-            // qWarning() << urlParam;
-            if (urlParam.startsWith("itag=")) {
-                int separator = urlParam.indexOf("=");
-                format = urlParam.mid(separator + 1).toInt();
-            } else if (urlParam.startsWith("url=")) {
-                int separator = urlParam.indexOf("=");
-                url = urlParam.mid(separator + 1);
-                url = QByteArray::fromPercentEncoding(url.toUtf8());
-            } else if (urlParam.startsWith("sig=")) {
-                int separator = urlParam.indexOf("=");
-                sig = urlParam.mid(separator + 1);
-                sig = QByteArray::fromPercentEncoding(sig.toUtf8());
-            } else if (urlParam.startsWith("s=")) {
-                if (fromWebPage || ageGate) {
-                    int separator = urlParam.indexOf("=");
-                    sig = urlParam.mid(separator + 1);
-                    sig = QByteArray::fromPercentEncoding(sig.toUtf8());
-                    if (ageGate)
-                        sig = JsFunctions::instance()->decryptAgeSignature(sig);
-                    else {
-                        sig = decryptSignature(sig);
-                        if (sig.isEmpty())
-                            sig = JsFunctions::instance()->decryptSignature(sig);
-                    }
-                } else {
-                    // qDebug() << "Loading webpage";
-                    QUrl url("http://www.youtube.com/watch");
-                    url.addQueryItem("v", videoId);
-                    url.addQueryItem("gl", "US");
-                    url.addQueryItem("hl", "en");
-                    url.addQueryItem("has_verified", "1");
-                    QObject *reply = The::http()->get(url);
-                    connect(reply, SIGNAL(data(QByteArray)), SLOT(scrapeWebPage(QByteArray)));
-                    connect(reply, SIGNAL(error(QNetworkReply*)), SLOT(errorVideoInfo(QNetworkReply*)));
-                    // see you in scrapWebPage(QByteArray)
-                    return;
-                }
-            }
-        }
-        if (format == -1 || url.isNull()) continue;
-
-        url += "&signature=" + sig;
-
-        if (!url.contains("ratebypass"))
-            url += "&ratebypass=yes";
-
-        // qWarning() << url;
+void Video::loadStreamUrl() {
+    loadStreamUrlJS();
+}
 
-        if (format == definitionCode) {
-            qDebug() << "Found format" << definitionCode;
-            QUrl videoUrl = QUrl::fromEncoded(url.toUtf8(), QUrl::StrictMode);
-            m_streamUrl = videoUrl;
-            this->definitionCode = definitionCode;
-            emit gotStreamUrl(videoUrl);
-            loadingStreamUrl = false;
-            return;
-        }
+bool Video::isLoadingStreamUrl() const {
+    return ytVideo != nullptr || ytjsVideo != nullptr;
+}
 
-        urlMap.insert(format, url);
+void Video::abortLoadStreamUrl() {
+    if (ytVideo) {
+        ytVideo->disconnect(this);
+        ytVideo->deleteLater();
+        ytVideo = nullptr;
     }
-
-    QList<int> definitionCodes = VideoDefinition::getDefinitionCodes();
-    int currentIndex = definitionCodes.indexOf(definitionCode);
-    int previousIndex = 0;
-    while (currentIndex >= 0) {
-        previousIndex = currentIndex - 1;
-        if (previousIndex < 0) previousIndex = 0;
-        int definitionCode = definitionCodes.at(previousIndex);
-        if (urlMap.contains(definitionCode)) {
-            qDebug() << "Found format" << definitionCode;
-            QString url = urlMap.value(definitionCode);
-            QUrl videoUrl = QUrl::fromEncoded(url.toUtf8(), QUrl::StrictMode);
-            m_streamUrl = videoUrl;
-            this->definitionCode = definitionCode;
-            emit gotStreamUrl(videoUrl);
-            loadingStreamUrl = false;
-            return;
-        }
-        currentIndex--;
+    if (ytjsVideo) {
+        ytjsVideo->disconnect(this);
+        ytjsVideo->deleteLater();
+        ytjsVideo = nullptr;
     }
-
-    emit errorStreamUrl(tr("Cannot get video stream for %1").arg(m_webpage.toString()));
 }
 
-void Video::foundVideoUrl(QString videoToken, int definitionCode) {
-    // qDebug() << "foundVideoUrl" << videoToken << definitionCode;
-
-    QUrl videoUrl = QUrl(QString(
-                             "http://www.youtube.com/get_video?video_id=%1&t=%2&eurl=&el=&ps=&asv=&fmt=%3"
-                             ).arg(videoId, videoToken, QString::number(definitionCode)));
-
-    m_streamUrl = videoUrl;
-    loadingStreamUrl = false;
-    emit gotStreamUrl(videoUrl);
+void Video::addThumb(int width, int height, QString url) {
+    thumbs << YTThumb(width, height, url);
+    thumbsNeedSorting = true;
 }
 
-void Video::errorVideoInfo(QNetworkReply *reply) {
-    loadingStreamUrl = false;
-    emit errorStreamUrl(tr("Network error: %1 for %2").arg(reply->errorString(), reply->url().toString()));
-}
-
-void Video::scrapeWebPage(QByteArray data) {
-    QString html = QString::fromUtf8(data);
-    // qWarning() << html;
-
-    if (html.contains("player-age-gate-content\"")) {
-        // qDebug() << "Found ageGate";
-        ageGate = true;
-        elIndex = 4;
-        getVideoInfo();
-        return;
-    }
-
-    QRegExp re(".*\"url_encoded_fmt_stream_map\":\\s+\"([^\"]+)\".*");
-    bool match = re.exactMatch(html);
-    // on regexp failure, stop and report error
-    if (!match || re.numCaptures() < 1) {
-        qWarning() << "Error parsing video page";
-        // emit errorStreamUrl("Error parsing video page");
-        // loadingStreamUrl = false;
-        elIndex++;
-        getVideoInfo();
-        return;
+VariantPromise &Video::loadThumb(QSize size, qreal pixelRatio) {
+    if (thumbsNeedSorting) {
+        std::sort(thumbs.begin(), thumbs.end(),
+                  [](auto a, auto b) { return a.getWidth() < b.getWidth(); });
+        thumbsNeedSorting = false;
     }
-    fmtUrlMap = re.cap(1);
-    fmtUrlMap.replace("\\u0026", "&");
-    // parseFmtUrlMap(fmtUrlMap, true);
 
-    QRegExp jsPlayerRe("\"assets\":.+\"js\":\\s*\"([^\"]+)\"");
-    if (jsPlayerRe.indexIn(html) != -1) {
-        QString jsPlayerUrl = jsPlayerRe.cap(1);
-        jsPlayerUrl.remove('\\');
-        jsPlayerUrl = "http:" + jsPlayerUrl;
-        // qDebug() << "jsPlayerUrl" << jsPlayerUrl;
-        /*
-        QRegExp jsPlayerIdRe("-(.+)\\.js");
-        jsPlayerIdRe.indexIn(jsPlayerUrl);
-        QString jsPlayerId = jsPlayerRe.cap(1);
-        */
-        QObject *reply = The::http()->get(jsPlayerUrl);
-        connect(reply, SIGNAL(data(QByteArray)), SLOT(parseJsPlayer(QByteArray)));
-        connect(reply, SIGNAL(error(QNetworkReply*)), SLOT(errorVideoInfo(QNetworkReply*)));
+    auto promise = new VariantPromise(this);
+    if (thumbs.isEmpty()) {
+        QTimer::singleShot(0, promise, [promise] { promise->reject("Empty thumbs"); });
+        return *promise;
     }
-}
-
-void Video::gotHeadHeaders(QNetworkReply* reply) {
-    int statusCode = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
-    // qDebug() << "gotHeaders" << statusCode;
-    if (statusCode == 200) {
-        foundVideoUrl(videoToken, definitionCode);
-    } else {
-
-        // try next (lower quality) definition
-        /*
-        QStringList definitionNames = VideoDefinition::getDefinitionNames();
-        int currentIndex = definitionNames.indexOf(currentDefinition);
-        int previousIndex = 0;
-        if (currentIndex > 0) {
-            previousIndex = currentIndex - 1;
-        }
-        if (previousIndex > 0) {
-            QString nextDefinitionName = definitionNames.at(previousIndex);
-            findVideoUrl(nextDefinitionName);
-        } else {
-            foundVideoUrl(videoToken, 18);
-        }*/
 
+    auto reallyLoad = [this, promise, size, pixelRatio](auto &&self,
+                                                        YTThumb *previous = nullptr) -> void {
+        YTThumb *selected = nullptr;
 
-        QList<int> definitionCodes = VideoDefinition::getDefinitionCodes();
-        int currentIndex = definitionCodes.indexOf(definitionCode);
-        int previousIndex = 0;
-        if (currentIndex > 0) {
-            previousIndex = currentIndex - 1;
-            int definitionCode = definitionCodes.at(previousIndex);
-            if (definitionCode == 18) {
-                // This is assumed always available
-                foundVideoUrl(videoToken, 18);
-            } else {
-                findVideoUrl(definitionCode);
+        static bool fallback = false;
+        if (fallback) {
+            qDebug() << "Doing fallback loop";
+            bool skip = previous != nullptr;
+            for (int i = thumbs.size() - 1; i >= 0; --i) {
+                auto &thumb = thumbs.at(i);
+                if (!skip) {
+                    selected = (YTThumb *)&thumb;
+                    qDebug() << "selected" << selected->getUrl();
+                    break;
+                }
+                if (&thumb == previous) skip = false;
             }
-
         } else {
-            foundVideoUrl(videoToken, 18);
+            bool skip = previous != nullptr;
+            for (auto &thumb : qAsConst(thumbs)) {
+                if (!skip && thumb.getWidth() * pixelRatio >= size.width() &&
+                    thumb.getHeight() * pixelRatio >= size.height()) {
+                    selected = (YTThumb *)&thumb;
+                    qDebug() << "selected" << selected->getUrl();
+                    break;
+                }
+                if (&thumb == previous) skip = false;
+            }
         }
-
-    }
-}
-
-void Video::parseJsPlayer(QByteArray bytes) {
-    QString js = QString::fromUtf8(bytes);
-    // qWarning() << "jsPlayer" << js;
-    QRegExp funcNameRe("signature=([" + jsNameChars + "]+)");
-    if (funcNameRe.indexIn(js) == -1) {
-        qWarning() << "Cannot capture signature function name";
-    } else {
-        sigFuncName = funcNameRe.cap(1);
-        captureFunction(sigFuncName, js);
-        // qWarning() << sigFunctions;
-    }
-    parseFmtUrlMap(fmtUrlMap, true);
-}
-
-void Video::captureFunction(const QString &name, const QString &js) {
-    QRegExp funcRe("function\\s+" + QRegExp::escape(name) + "\\s*\\([" + jsNameChars + ",\\s]*\\)\\s*\\{[^\\}]+\\}");
-    if (funcRe.indexIn(js) == -1) {
-        qWarning() << "Cannot capture function" << name;
-        return;
-    }
-    QString func = funcRe.cap(0);
-    sigFunctions.insert(name, func);
-
-    // capture inner functions
-    QRegExp invokedFuncRe("[\\s=;\\(]([" + jsNameChars + "]+)\\s*\\([" + jsNameChars + ",\\s]+\\)");
-    int pos = name.length() + 9;
-    while ((pos = invokedFuncRe.indexIn(func, pos)) != -1) {
-        QString funcName = invokedFuncRe.cap(1);
-        if (!sigFunctions.contains(funcName))
-            captureFunction(funcName, js);
-        pos += invokedFuncRe.matchedLength();
-    }
-
-    // capture referenced objects
-    QRegExp objRe("[\\s=;\\(]([" + jsNameChars + "]+)\\.[" + jsNameChars + "]+");
-    pos = name.length() + 9;
-    while ((pos = objRe.indexIn(func, pos)) != -1) {
-        QString objName = objRe.cap(1);
-        if (!sigObjects.contains(objName))
-            captureObject(objName, js);
-        pos += objRe.matchedLength();
-    }
-}
-
-void Video::captureObject(const QString &name, const QString &js) {
-    QRegExp re("var\\s+" + QRegExp::escape(name) + "\\s*=\\s*\\{.+\\}\\s*;");
-    re.setMinimal(true);
-    if (re.indexIn(js) == -1) {
-        qWarning() << "Cannot capture object" << name;
-        return;
-    }
-    QString obj = re.cap(0);
-    sigObjects.insert(name, obj);
-}
-
-QString Video::decryptSignature(const QString &s) {
-    if (sigFuncName.isEmpty()) return QString();
-    QScriptEngine engine;
-    foreach (QString f, sigObjects.values()) {
-        QScriptValue value = engine.evaluate(f);
-        if (value.isError())
-            qWarning() << "Error in" << f << value.toString();
-    }
-    foreach (QString f, sigFunctions.values()) {
-        QScriptValue value = engine.evaluate(f);
-        if (value.isError())
-            qWarning() << "Error in" << f << value.toString();
-    }
-    QString js = sigFuncName + "('" + s + "');";
-    QScriptValue value = engine.evaluate(js);
-    if (value.isUndefined()) {
-        qWarning() << "Undefined result for" << js;
-        return QString();
-    }
-    if (value.isError()) {
-        qWarning() << "Error in" << js << value.toString();
-        return QString();
-    }
-    return value.toString();
-}
-
-void Video::findVideoUrl(int definitionCode) {
-    this->definitionCode = definitionCode;
-
-    QUrl videoUrl = QUrl(QString(
-                             "http://www.youtube.com/get_video?video_id=%1&t=%2&eurl=&el=&ps=&asv=&fmt=%3"
-                             ).arg(videoId, videoToken, QString::number(definitionCode)));
-
-    QObject *reply = The::http()->head(videoUrl);
-    connect(reply, SIGNAL(finished(QNetworkReply*)), SLOT(gotHeadHeaders(QNetworkReply*)));
-    // connect(reply, SIGNAL(error(QNetworkReply*)), SLOT(errorVideoInfo(QNetworkReply*)));
-
-    // see you in gotHeadHeaders()
-}
-
-QString Video::formattedDuration() const {
-    QString format = m_duration > 3600 ? "h:mm:ss" : "m:ss";
-    return QTime().addSecs(m_duration).toString(format);
+        if (!selected && !fallback) {
+            qDebug() << "Falling back";
+            fallback = true;
+            self(self);
+            return;
+        }
+        if (selected) {
+            qDebug() << "Loading" << selected->getUrl();
+            selected->load(promise)
+                    .then([promise](auto variant) { promise->resolve(variant); })
+                    .onFailed([self, selected] { self(self, selected); });
+        } else
+            promise->reject("No thumb");
+    };
+    reallyLoad(reallyLoad);
+
+    return *promise;
 }