diff --git a/app/dialog/sequence/sequencedialogparametertab.cpp b/app/dialog/sequence/sequencedialogparametertab.cpp
index 2617cae4c..2a60df4f1 100644
--- a/app/dialog/sequence/sequencedialogparametertab.cpp
+++ b/app/dialog/sequence/sequencedialogparametertab.cpp
@@ -54,7 +54,7 @@ SequenceDialogParameterTab::SequenceDialogParameterTab(Sequence* sequence, QWidg
   preview_layout->addWidget(preview_resolution_label_, row, 2);
   row++;
   preview_layout->addWidget(new QLabel(tr("Quality:")), row, 0);
-  preview_format_field_ = new PixelFormatComboBox(true);
+  preview_format_field_ = new PixelFormatComboBox(false);
   preview_layout->addWidget(preview_format_field_, row, 1, 1, 2);
   layout->addWidget(preview_group);
 
diff --git a/app/render/previewautocacher.cpp b/app/render/previewautocacher.cpp
index a0ec6d395..053f1112c 100644
--- a/app/render/previewautocacher.cpp
+++ b/app/render/previewautocacher.cpp
@@ -195,7 +195,7 @@ void PreviewAutoCacher::VideoRendered()
       const QByteArray& hash = video_tasks_.value(watcher);
 
       // Download frame in another thread
-      if (!hash.isEmpty()) {
+      if (!hash.isEmpty() && VideoParams::FormatIsFloat(viewer_node_->GetVideoParams().format())) {
         FramePtr frame = watcher->Get().value<FramePtr>();
         RenderTicketWatcher* w = new RenderTicketWatcher();
         w->setProperty("frame", QVariant::fromValue(frame));
@@ -517,6 +517,7 @@ void PreviewAutoCacher::RequeueFrames()
       && viewer_node_->video_frame_cache()->HasInvalidatedRanges()
       && hash_tasks_.isEmpty()
       && has_changed_
+      && VideoParams::FormatIsFloat(viewer_node_->GetVideoParams().format())
       && (!paused_ || use_custom_range_)) {
     TimeRange using_range;