[RFC] DNxHD support

app/codec/exportformat.cpp

@@ -117,7 +117,7 @@ QList<ExportCodec::Codec> ExportFormat::GetVideoCodecs(ExportFormat::Format f)
   case kFormatTIFF:
     return {ExportCodec::kCodecTIFF};
   case kFormatQuickTime:
-    return {ExportCodec::kCodecH264, ExportCodec::kCodecH264rgb, ExportCodec::kCodecH265, ExportCodec::kCodecProRes, ExportCodec::kCodecCineform};
+    return {ExportCodec::kCodecH264, ExportCodec::kCodecH264rgb, ExportCodec::kCodecH265, ExportCodec::kCodecProRes, ExportCodec::kCodecCineform, ExportCodec::kCodecDNxHD};
   case kFormatWebM:
     return {ExportCodec::kCodecVP9};
   case kFormatOgg:

app/codec/ffmpeg/ffmpegencoder.cpp

@@ -721,6 +721,7 @@ bool FFmpegEncoder::SetupCodecContext(AVStream* stream, AVCodecContext* codec_ct
 
   if (codec->type == AVMEDIA_TYPE_VIDEO) {
     stream->avg_frame_rate = codec_ctx->framerate;
+    stream->time_base = av_add_q(codec_ctx->time_base, {0, 1});
   }
 
   return true;

app/dialog/export/codec/CMakeLists.txt

@@ -22,6 +22,8 @@ set(OLIVE_SOURCES
   dialog/export/codec/codecsection.h
   dialog/export/codec/codecstack.cpp
   dialog/export/codec/codecstack.h
+  dialog/export/codec/dnxhdsection.cpp
+  dialog/export/codec/dnxhdsection.h
   dialog/export/codec/h264section.cpp
   dialog/export/codec/h264section.h
   dialog/export/codec/imagesection.cpp

app/dialog/export/codec/dnxhdsection.cpp

@@ -0,0 +1,70 @@
+/***
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2021 Olive Team
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "dnxhdsection.h"
+
+#include <QGridLayout>
+#include <QLabel>
+
+namespace olive {
+
+DNxHDSection::DNxHDSection(QWidget *parent) :
+  CodecSection(parent)
+{
+  QGridLayout *layout = new QGridLayout(this);
+
+  layout->setMargin(0);
+
+  int row = 0;
+
+  layout->addWidget(new QLabel(tr("Profile:")), row, 0);
+
+  preset_combobox_ = new QComboBox();
+
+  preset_combobox_->setToolTip(tr("While using DNxHD you may need to manually change pixel format. \n\n"
+            "dnxhr_hqx profile will need you to manually specify pixel format `422p10le` in the advanced menu. \n\n"
+            "dnxhr_444 profile will need you to manually specify pixel format `444p10le` or `gbrp10le` in the advanced menu."));
+
+  /* Correspond to the following indexes for FFmpeg
+   *
+   *-profile           <int>        E..V....... (from 0 to 5) (default dnxhd)
+   *  dnxhd           0            E..V.......
+   *  dnxhr_444       5            E..V.......
+   *  dnxhr_hqx       4            E..V.......
+   *  dnxhr_hq        3            E..V.......
+   *  dnxhr_sq        2            E..V.......
+   *  dnxhr_lb        1            E..V.......
+   *
+   */
+
+  //preset_combobox_->addItem(tr("dnxhd"));
+  preset_combobox_->addItem(tr("dnxhr_lb"));
+  preset_combobox_->addItem(tr("dnxhr_sq"));
+  preset_combobox_->addItem(tr("dnxhr_hq"));
+  preset_combobox_->addItem(tr("dnxhr_hqx"));
+  preset_combobox_->addItem(tr("dnxhr_444"));
+
+
+  preset_combobox_->setCurrentIndex(1);
+
+  layout->addWidget(preset_combobox_, row, 1);
+}
+
+void DNxHDSection::AddOpts(EncodingParams *params)
+{
+  params->set_video_option(QStringLiteral("profile"), QString::number(preset_combobox_->currentIndex() + 1));
+}
+
+} 

app/dialog/export/codec/dnxhdsection.h

@@ -0,0 +1,40 @@
+/***
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2021 Olive Team
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#ifndef DNXHDSECTION_H
+#define DNXHDSECTION_H
+
+#include <QComboBox>
+
+#include "codecsection.h"
+
+namespace olive {
+
+class DNxHDSection : public CodecSection
+{
+  Q_OBJECT
+public:
+  DNxHDSection(QWidget *parent = nullptr);
+
+  virtual void AddOpts(EncodingParams* params) override;
+
+private:
+  QComboBox *preset_combobox_;
+
+};
+
+}
+
+#endif // DNXHDSECTION_H 

app/dialog/export/exportvideotab.cpp

@@ -188,6 +188,9 @@ QWidget *ExportVideoTab::SetupCodecSection()
   cineform_section_ = new CineformSection();
   codec_stack_->addWidget(cineform_section_);
 
+  dnxhd_section_ = new DNxHDSection();
+  codec_stack_->addWidget(dnxhd_section_);
+
   row++;
 
   QPushButton* advanced_btn = new QPushButton(tr("Advanced"));
@@ -246,6 +249,9 @@ void ExportVideoTab::VideoCodecChanged()
     case ExportCodec::kCodecCineform:
       SetCodecSection(cineform_section_);
       break;
+    case ExportCodec::kCodecDNxHD:
+      SetCodecSection(dnxhd_section_);
+      break;
     default:
       SetCodecSection(ExportCodec::IsCodecAStillImage(codec) ? image_section_ : nullptr);
   }

app/dialog/export/exportvideotab.h

@@ -29,6 +29,7 @@
 #include "dialog/export/codec/cineformsection.h"
 #include "dialog/export/codec/codecstack.h"
 #include "dialog/export/codec/h264section.h"
+#include "dialog/export/codec/dnxhdsection.h"
 #include "dialog/export/codec/imagesection.h"
 #include "node/color/colormanager/colormanager.h"
 #include "widget/colorwheel/colorspacechooser.h"
@@ -162,6 +163,7 @@ public slots:
   H264Section* h264_section_;
   H264Section* h265_section_;
   CineformSection *cineform_section_;
+  DNxHDSection *dnxhd_section_;
 
   ColorSpaceChooser* color_space_chooser_;