From 50dc0cddcfe981089ee4260bc98913b763227eb3 Mon Sep 17 00:00:00 2001
From: kelteseth <i@kelteseth.net>
Date: Sat, 25 Aug 2018 00:44:58 +0200
Subject: [PATCH] Add better video preview generation

---
 ScreenPlay/src/create.cpp | 20 ++++++++++++++++----
 ScreenPlay/src/create.h   |  5 +++++
 2 files changed, 21 insertions(+), 4 deletions(-)

diff --git a/ScreenPlay/src/create.cpp b/ScreenPlay/src/create.cpp
index 56cc2e32..9c98ad9e 100644
--- a/ScreenPlay/src/create.cpp
+++ b/ScreenPlay/src/create.cpp
@@ -192,27 +192,37 @@ void Create::importVideo(QString title, QUrl videoPath, int timeStamp, int video
         qDebug() << "Start converting video to thumbnail";
 #ifdef QT_DEBUG
         pro.data()->setProgram("C:/msys64/mingw64/bin/ffmpeg.exe");
-#elif
+#endif
+#ifdef QT_NO_DEBUG
         pro.data()->setProgram("ffmpeg.exe");
 #endif
+        emit localWorkshopCreationStatusChanged(LocalWorkshopCreationStatus::ConvertingPreviewImage);
         pro.data()->start();
         pro.data()->waitForFinished(-1);
         qDebug() << "Done converting video to thumbnail" << pro.data()->readAllStandardOutput();
+        emit localWorkshopCreationStatusChanged(LocalWorkshopCreationStatus::ConvertingPreviewImageFinished);
         pro.data()->close();
 
     });
 
+    createVideoPreview(tmpPath,((videoDurationInSeconds * videoFrameRate) / 120));
+
+}
+
+void Create::createVideoPreview(QString path, int framesToSkip)
+{
+
     QtConcurrent::run([=]() {
         QStringList args;
         args.append("-y");
         args.append("-i");
-        args.append(tmpPath);
+        args.append(path);
         args.append("-speed");
         args.append("ultrafast");
         args.append("-vf");
         // We allways want to have a 5 second clip via 24fps -> 120
         // Divided by the number of frames we can skip (timeInSeconds * Framrate)
-        args.append("select='not(mod(n\\," + QString::number((videoDurationInSeconds * videoFrameRate) / 120) + "))',setpts=N/FRAME_RATE/TB,scale=480:-1");
+        args.append("select='not(mod(n\\," + QString::number(framesToSkip) + "))',setpts=N/FRAME_RATE/TB,scale=480:-1");
         args.append("-an");
         args.append("preview.mp4");
         QScopedPointer<QProcess> pro(new QProcess());
@@ -221,12 +231,14 @@ void Create::importVideo(QString title, QUrl videoPath, int timeStamp, int video
         qDebug() << "Start converting video to preview";
 #ifdef QT_DEBUG
         pro.data()->setProgram("C:/msys64/mingw64/bin/ffmpeg.exe");
-#elif
+#else
         pro.data()->setProgram("ffmpeg.exe");
 #endif
+        emit localWorkshopCreationStatusChanged(LocalWorkshopCreationStatus::ConvertingPreviewVideo);
         pro.data()->start();
         pro.data()->waitForFinished(-1);
         qDebug() << "Done converting video to preview" << pro.data()->readAllStandardOutput();
+        emit localWorkshopCreationStatusChanged(LocalWorkshopCreationStatus::ConvertingPreviewVideoFinished);
         pro.data()->close();
 
     });
diff --git a/ScreenPlay/src/create.h b/ScreenPlay/src/create.h
index 0355ab81..25bc0314 100644
--- a/ScreenPlay/src/create.h
+++ b/ScreenPlay/src/create.h
@@ -22,6 +22,10 @@ enum Value {
     CopyVideoFinished,
     CopyImageFinished,
     CopyConfigFinished,
+    ConvertingPreviewImage,
+    ConvertingPreviewImageFinished,
+    ConvertingPreviewVideo,
+    ConvertingPreviewVideoFinished,
     Finished,
     ErrorFolder,
     ErrorFolderCreation,
@@ -49,6 +53,7 @@ public slots:
 
     void importVideo(QString title, QUrl videoPath, QUrl previewPath, int videoDuration);
     void importVideo(QString title, QUrl videoPath, int timeStamp, int videoDuration, int videoFrameRate);
+    void createVideoPreview(QString path, int framesToSkip);
 
 private:
     Settings* m_settings;