improved render channel count system

app/task/render/render.cpp

@@ -42,7 +42,7 @@ bool RenderTask::Render(ColorManager* manager,
                         const TimeRangeList &audio_range,
                         RenderMode::Mode mode,
                         FrameHashCache* cache, const QSize &force_size,
-                        const QMatrix4x4 &force_matrix, PixelFormat::Format force_format,
+                        const QMatrix4x4 &force_matrix, VideoParams::Format force_format,
                         ColorProcessorPtr force_color_output)
 {
   // Run watchers in another thread so they can accept signals even while this thread is blocked

app/task/render/render.h

@@ -44,7 +44,7 @@ protected:
               const TimeRangeList &audio_range, RenderMode::Mode mode,
               FrameHashCache *cache, const QSize& force_size = QSize(0, 0),
               const QMatrix4x4& force_matrix = QMatrix4x4(),
-              PixelFormat::Format force_format = PixelFormat::PIX_FMT_INVALID,
+              VideoParams::Format force_format = VideoParams::kFormatInvalid,
               ColorProcessorPtr force_color_output = nullptr);
 
   virtual void DownloadFrame(QThread* thread, FramePtr frame, const QByteArray &hash);