gizmos and waveforms restored

io/exportthread.cpp

@@ -355,20 +355,14 @@ void ExportThread::run() {
 		}
 		if (video_enabled) {
 			do {
+				// TODO optimize by rendering the next frame while encoding the last
 				renderer->start_render(nullptr, sequence, nullptr, video_frame->data[0]);
 				waitCond.wait(&mutex);
+				if (!continueEncode) break;
 			} while (renderer->did_texture_fail());
+			if (!continueEncode) break;
 		}
 
-		/*if (sequence->playhead == start_frame) {
-			// render first frame
-			if (video_enabled) {
-				qDebug() << "FIRST FRAME start video thread";
-				renderer->start_render(nullptr, sequence, nullptr, video_frame->data[0]);
-			}
-			sequence->playhead++;
-		}*/
-
 		// encode last frame while rendering next frame
 		double timecode_secs = (double) (sequence->playhead-start_frame) / sequence->frame_rate;
 		if (video_enabled) {

io/exportthread.h

@@ -54,7 +54,7 @@ public:
 	bool continueEncode;
 signals:
 	void progress_changed(int value, qint64 remaining_ms);
-private slots:
+public slots:
 	void wake();
 private:
 	bool encode(AVFormatContext* ofmt_ctx, AVCodecContext* codec_ctx, AVFrame* frame, AVPacket* packet, AVStream* stream, bool rescale);