videotimline

squashed 694 commits from http://gareus.org/gitweb/?p=ardour3.git

1 files changed, 917 insertions, 0 deletions

diff --git a/gtk2_ardour/export_video_dialog.cc b/gtk2_ardour/export_video_dialog.cc
new file mode 100644
index 0000000000..89693aee8e
--- /dev/null
+++ b/gtk2_ardour/export_video_dialog.cc
@@ -0,0 +1,917 @@
+/*
+    Copyright (C) 2010 Paul Davis
+    Author: Robin Gareus <robin@gareus.org>
+
+    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 2 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, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+#ifdef WITH_VIDEOTIMELINE
+
+#include <cstdio>
+#include <string>
+#include <sstream>
+#include <iomanip>
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <sigc++/bind.h>
+#include <libgen.h>
+
+#include "pbd/error.h"
+#include "pbd/convert.h"
+#include "gtkmm2ext/utils.h"
+#include "ardour/session_directory.h"
+#include "ardour/profile.h"
+#include "ardour/template_utils.h"
+#include "ardour/session.h"
+#include "ardour_ui.h"
+#include "gui_thread.h"
+
+#include "ardour/export_handler.h"
+#include "ardour/export_status.h"
+#include "ardour/export_timespan.h"
+#include "ardour/export_channel_configuration.h"
+#include "ardour/export_format_specification.h"
+#include "ardour/export_filename.h"
+#include "ardour/route.h"
+#include "ardour/session_metadata.h"
+#include "ardour/broadcast_info.h"
+
+#include "utils.h"
+#include "opts.h"
+#include "export_video_dialog.h"
+#include "utils_videotl.h"
+#include "i18n.h"
+
+using namespace Gtk;
+using namespace std;
+using namespace PBD;
+using namespace ARDOUR;
+
+ExportVideoDialog::ExportVideoDialog (PublicEditor& ed, Session* s)
+	: ArdourDialog (_("Export Video File "))
+	, editor (ed)
+  , outfn_path_label (_("Output File:"), Gtk::ALIGN_LEFT)
+	, outfn_browse_button (_("Browse"))
+	, invid_path_label (_("Input Video File:"), Gtk::ALIGN_LEFT)
+	, invid_browse_button (_("Browse"))
+	, transcode_button (_("Export"))
+	, abort_button (_("Abort"))
+	, scale_checkbox (_("Scale Video (W x H):"))
+	, width_adjustment (128, 768, 1920, 1, 16, 0)
+	, width_spinner (width_adjustment)
+	, height_adjustment (128, 576, 1920, 1, 16, 0)
+	, height_spinner (height_adjustment)
+	, aspect_checkbox (_("Set Aspect Ratio:"))
+	, normalize_checkbox (_("Normalize Audio"))
+	, twopass_checkbox (_("2 Pass Encoding"))
+	, optimizations_checkbox (_("Optimizations:"))
+	, optimizations_label ("-")
+	, deinterlace_checkbox (_("Deinterlace"))
+	, bframes_checkbox (_("Use [2] B-frames (MPEG 2 or 4 only)"))
+	, fps_checkbox (_("Override FPS (Default is to retain FPS from the input video file):"))
+	, meta_checkbox (_("Include Session Metadata"))
+#if 1 /* tentative debug mode */
+	, debug_checkbox (_("Enable Debug Mode: Print ffmpeg Command & Output to stdout."))
+#endif
+{
+	set_session (s);
+
+	transcoder = 0;
+
+	set_name ("ExportVideoDialog");
+	set_position (Gtk::WIN_POS_MOUSE);
+	set_modal (true);
+	set_skip_taskbar_hint (true);
+	set_resizable (false);
+
+	Gtk::Label* l;
+	vbox = manage (new VBox);
+	VBox* options_box = manage (new VBox);
+	HBox* path_hbox;
+
+#if 0
+	l = manage (new Label (_("<b>Export Video File</b>"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
+	l->set_use_markup ();
+	vbox->pack_start (*l, false, false);
+	l = manage (new Label (_("The file-format is determined by the extension you choose for the output file."), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
+	l->set_size_request(700,-1);
+	l->set_line_wrap();
+	vbox->pack_start (*l, false, false, 8);
+#endif
+
+	l = manage (new Label (_("<b>Files:</b>"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
+	l->set_use_markup ();
+	vbox->pack_start (*l, false, false);
+
+	path_hbox = manage (new HBox);
+	path_hbox->pack_start (outfn_path_label, false, false, 3);
+	path_hbox->pack_start (outfn_path_entry, true, true, 3);
+	path_hbox->pack_start (outfn_browse_button, false, false, 3);
+	outfn_browse_button.set_name ("PaddedButton");
+	vbox->pack_start (*path_hbox, false, false);
+
+	path_hbox = manage (new HBox);
+	path_hbox->pack_start (invid_path_label, false, false, 3);
+	path_hbox->pack_start (invid_path_entry, true, true, 3);
+	path_hbox->pack_start (invid_browse_button, false, false, 3);
+	invid_browse_button.set_name ("PaddedButton");
+	vbox->pack_start (*path_hbox, false, false);
+
+	path_hbox = manage (new HBox);
+	l = manage (new Label (_("Input Audio (Ardour Session):"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
+	path_hbox->pack_start (*l, true, true, 3);
+	path_hbox->pack_start (insnd_combo, true, true, 3);
+	vbox->pack_start (*path_hbox, false, false);
+
+	insnd_combo.set_name ("PaddedButton");
+	insnd_combo.append_text("from ardour session-start to session-end");
+
+	frameoffset_t av_offset = ARDOUR_UI::instance()->video_timeline->get_offset();
+	if (av_offset < 0 ) {
+		insnd_combo.append_text("from 00:00:00:00 to video-end");
+	} else {
+		insnd_combo.append_text("from video-start to video-end");
+	}
+	insnd_combo.set_active(0);
+
+#if 1
+	// TODO probe input file - don't use VTL duration.
+	framecnt_t duration_v = ARDOUR_UI::instance()->video_timeline->get_duration();
+	framecnt_t duration_a = _session->current_end_frame() - _session->current_start_frame();
+	if ( duration_a > duration_v ) {
+		warning << _("Audio is longer than video. This file may not play correctly.") << endmsg;
+	}
+#endif
+
+	outfn_path_entry.set_width_chars(38);
+	outfn_path_entry.set_text (_session->session_directory().export_path() + G_DIR_SEPARATOR +"export.avi");
+
+	XMLNode* node = _session->extra_xml (X_("Videotimeline"));
+	if (node && node->property(X_("Filename"))) {
+		std::string filename = node->property(X_("Filename"))->value();
+		if (filename.at(0) != G_DIR_SEPARATOR) {
+			filename = Glib::build_filename (_session->session_directory().video_path(), filename);
+		}
+		invid_path_entry.set_text (filename);
+	}
+
+	l = manage (new Label (_("<b>Settings:</b>"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
+	l->set_use_markup ();
+	options_box->pack_start (*l, false, true, 4);
+
+	Table* t = manage (new Table (4, 11));
+	t->set_spacings (4);
+	options_box->pack_start (*t, true, true, 4);
+	l = manage (new Label (_("Preset:"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
+	t->attach (*l, 0, 1, 0, 1);
+	t->attach (preset_combo, 1, 4, 0, 1);
+	l = manage (new Label (_("Video Codec:"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
+	t->attach (*l, 0, 1, 1, 2);
+	t->attach (video_codec_combo, 1, 2, 1, 2);
+	l = manage (new Label (_("Video KBit/s:"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
+	t->attach (*l, 2, 3, 1, 2);
+	t->attach (video_bitrate_combo, 3, 4, 1, 2);
+	l = manage (new Label (_("Audio Codec:"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
+	t->attach (*l, 0, 1, 2, 3);
+	t->attach (audio_codec_combo, 1, 2, 2, 3);
+	l = manage (new Label (_("Audio KBit/s:"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
+	t->attach (*l, 2, 3, 2, 3);
+	t->attach (audio_bitrate_combo, 3, 4, 2, 3);
+	l = manage (new Label (_("Audio Samplerate:"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
+	t->attach (*l, 0, 1, 3, 4);
+	t->attach (audio_samplerate_combo, 1, 2, 3, 4);
+	t->attach (normalize_checkbox, 2, 4, 3, 4);
+	t->attach (scale_checkbox, 0, 2, 4, 5);
+	t->attach (width_spinner, 2, 3, 4, 5);
+	t->attach (height_spinner, 3, 4, 4, 5);
+	t->attach (fps_checkbox, 0, 3, 5, 6);
+	t->attach (fps_combo, 3, 4, 5, 6);
+	t->attach (aspect_checkbox, 2, 3, 6, 7);
+	t->attach (aspect_combo, 3, 4, 6, 7);
+	t->attach (twopass_checkbox, 0, 2, 6, 7);
+	t->attach (bframes_checkbox, 0, 2, 7, 8);
+	t->attach (deinterlace_checkbox, 2, 4, 7, 8);
+	t->attach (meta_checkbox, 2, 4, 8, 9);
+	t->attach (optimizations_checkbox, 0, 1, 9, 10);
+	t->attach (optimizations_label, 1, 4, 9, 10);
+#if 1 /* tentative debug mode */
+	t->attach (debug_checkbox, 0, 4, 10, 11);
+#endif
+
+	preset_combo.set_name ("PaddedButton");
+	preset_combo.append_text("none");
+	preset_combo.append_text("dvd-mp2");
+	preset_combo.append_text("dvd-NTSC");
+	preset_combo.append_text("dvd-PAL");
+	preset_combo.append_text("flv");
+	preset_combo.append_text("mpeg4");
+	preset_combo.append_text("ogg");
+	preset_combo.append_text("you-tube");
+	preset_combo.set_active(0);
+
+	audio_codec_combo.set_name ("PaddedButton");
+	audio_codec_combo.append_text("ac3");
+	audio_codec_combo.append_text("libfaac");
+	audio_codec_combo.append_text("libmp3lame");
+	audio_codec_combo.append_text("libvorbis");
+	audio_codec_combo.append_text("mp2");
+	audio_codec_combo.append_text("pcm_s16le");
+	audio_codec_combo.set_active(2);
+
+	video_codec_combo.set_name ("PaddedButton");
+	video_codec_combo.append_text("flv");
+	video_codec_combo.append_text("libtheora");
+	video_codec_combo.append_text("mjpeg");
+	video_codec_combo.append_text("mpeg2video");
+	video_codec_combo.append_text("mpeg4");
+	video_codec_combo.append_text("x264 (default)");
+	video_codec_combo.append_text("x264 (hq)");
+	video_codec_combo.append_text("copy");
+	video_codec_combo.set_active(4);
+
+	audio_bitrate_combo.set_name ("PaddedButton");
+	audio_bitrate_combo.append_text("64k");
+	audio_bitrate_combo.append_text("128k");
+	audio_bitrate_combo.append_text("192k");
+	audio_bitrate_combo.append_text("256k");
+	audio_bitrate_combo.append_text("320k");
+	audio_bitrate_combo.set_active(2);
+
+	audio_samplerate_combo.set_name ("PaddedButton");
+	audio_samplerate_combo.append_text("22050");
+	audio_samplerate_combo.append_text("44100");
+	audio_samplerate_combo.append_text("48000");
+	audio_samplerate_combo.set_active(2);
+
+	video_bitrate_combo.set_name ("PaddedButton");
+	video_bitrate_combo.append_text("200k");
+	video_bitrate_combo.append_text("800k");
+	video_bitrate_combo.append_text("2000k");
+	video_bitrate_combo.append_text("5000k");
+	video_bitrate_combo.append_text("8000k");
+	video_bitrate_combo.append_text("retain");
+	video_bitrate_combo.set_active(3);
+
+	fps_combo.set_name ("PaddedButton");
+	fps_combo.append_text("23.976");
+	fps_combo.append_text("24");
+	fps_combo.append_text("24.976");
+	fps_combo.append_text("25");
+	fps_combo.append_text("29.97");
+	fps_combo.append_text("30");
+	fps_combo.append_text("59.94");
+	fps_combo.append_text("60");
+	float tcfps = _session->timecode_frames_per_second();
+	if      (fabs(tcfps - 23.976)  < 0.01) { fps_combo.set_active(0); }
+	else if (fabs(tcfps - 24.0  )  < 0.01) { fps_combo.set_active(1); }
+	else if (fabs(tcfps - 24.976)  < 0.01) { fps_combo.set_active(2); }
+	else if (fabs(tcfps - 25.0  )  < 0.01) { fps_combo.set_active(3); }
+	else if (fabs(tcfps - 29.97 )  < 0.01) { fps_combo.set_active(4); }
+	else if (fabs(tcfps - 30.0  )  < 0.01) { fps_combo.set_active(5); }
+	else if (fabs(tcfps - 59.94 )  < 0.01) { fps_combo.set_active(6); }
+	else if (fabs(tcfps - 60.0  )  < 0.01) { fps_combo.set_active(7); }
+	else { fps_combo.set_active(5); }
+
+	aspect_combo.set_name ("PaddedButton");
+	aspect_combo.append_text("4:3");
+	aspect_combo.append_text("16:9");
+	aspect_combo.set_active(1);
+
+	optimizations_checkbox.set_sensitive(false);
+	scale_checkbox_toggled();
+	aspect_checkbox_toggled();
+	fps_checkbox_toggled();
+	video_codec_combo_changed();
+
+  vbox->pack_start (*options_box, false, true);
+	get_vbox()->set_spacing (4);
+	get_vbox()->pack_start (*vbox, false, false);
+
+	progress_box = manage (new VBox);
+	progress_box->pack_start (pbar, false, false);
+	progress_box->pack_start (abort_button, false, false);
+	get_vbox()->pack_start (*progress_box, false, false);
+
+	scale_checkbox.signal_toggled().connect (sigc::mem_fun (*this, &ExportVideoDialog::scale_checkbox_toggled));
+	aspect_checkbox.signal_toggled().connect (sigc::mem_fun (*this, &ExportVideoDialog::aspect_checkbox_toggled));
+	fps_checkbox.signal_toggled().connect (sigc::mem_fun (*this, &ExportVideoDialog::fps_checkbox_toggled));
+	preset_combo.signal_changed().connect (sigc::mem_fun (*this, &ExportVideoDialog::preset_combo_changed));
+	video_codec_combo.signal_changed().connect (sigc::mem_fun (*this, &ExportVideoDialog::video_codec_combo_changed));
+	outfn_browse_button.signal_clicked().connect (sigc::mem_fun (*this, &ExportVideoDialog::open_outfn_dialog));
+	invid_browse_button.signal_clicked().connect (sigc::mem_fun (*this, &ExportVideoDialog::open_invid_dialog));
+	transcode_button.signal_clicked().connect (sigc::mem_fun (*this, &ExportVideoDialog::launch_export));
+	abort_button.signal_clicked().connect (sigc::mem_fun (*this, &ExportVideoDialog::abort_clicked));
+
+	cancel_button = add_button (Stock::CANCEL, RESPONSE_CANCEL);
+	get_action_area()->pack_start (transcode_button, false, false);
+	show_all_children ();
+	progress_box->hide();
+}
+
+ExportVideoDialog::~ExportVideoDialog ()
+{
+	if (transcoder) { delete transcoder; transcoder = 0;}
+}
+
+void
+ExportVideoDialog::on_show ()
+{
+	Dialog::on_show ();
+}
+
+void
+ExportVideoDialog::abort_clicked ()
+{
+	aborted = true;
+	if (transcoder) {
+		transcoder->cancel();
+	}
+}
+
+void
+ExportVideoDialog::update_progress (framecnt_t c, framecnt_t a)
+{
+	if (a == 0 || c > a) {
+		pbar.set_pulse_step(.1);
+		pbar.pulse();
+		return;
+	}
+	pbar.set_fraction ((double)c / (double) a);
+}
+
+void
+ExportVideoDialog::finished ()
+{
+	if (aborted) {
+		unlink(outfn_path_entry.get_text().c_str());
+		unlink (insnd.c_str());
+		warning << _("Video Export Failed or Was Aborted") << endmsg;
+		Gtk::Dialog::response(RESPONSE_CANCEL);
+	} else if (twopass) {
+		twopass = false;
+		if (transcoder) { delete transcoder; transcoder = 0;}
+		encode_pass(2);
+	} else {
+	  if (twopass_checkbox.get_active()) {
+			std::string outfn = outfn_path_entry.get_text();
+			std::string p2log = Glib::path_get_dirname (outfn) + G_DIR_SEPARATOR + "ffmpeg2pass";
+			unlink (p2log.c_str());
+		}
+		unlink (insnd.c_str());
+		Gtk::Dialog::response(RESPONSE_ACCEPT);
+	}
+}
+
+void
+ExportVideoDialog::launch_export ()
+{
+	std::string outfn = outfn_path_entry.get_text();
+	if (!confirm_video_outfn(outfn)) { return; }
+
+	vbox->hide();
+	cancel_button->hide();
+	transcode_button.hide();
+	pbar.set_size_request(300,-1);
+	pbar.set_text(_("Exporting Audio.."));
+	progress_box->show();
+	aborted = false;
+	twopass = twopass_checkbox.get_active();
+
+	/* export audio track */
+	ExportTimespanPtr tsp = _session->get_export_handler()->add_timespan();
+	boost::shared_ptr<ExportChannelConfiguration> ccp = _session->get_export_handler()->add_channel_config();
+	boost::shared_ptr<ARDOUR::ExportFilename> fnp = _session->get_export_handler()->add_filename();
+	boost::shared_ptr<AudioGrapher::BroadcastInfo> b;
+  XMLTree tree;
+	std::string vtl_samplerate = audio_samplerate_combo.get_active_text();
+	std::string vtl_normalize = normalize_checkbox.get_active()?"true":"false";
+	tree.read_buffer(std::string(
+	/* TODO: move this into a header file */
+"<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
+"<ExportFormatSpecification name=\"VTL-WAV-16\" id=\"3094591e-ccb9-4385-a93f-c9955ffeb1f0\">"
+"  <Encoding id=\"F_WAV\" type=\"T_Sndfile\" extension=\"wav\" name=\"WAV\" has-sample-format=\"true\" channel-limit=\"256\"/>"
+"  <SampleRate rate=\""+ vtl_samplerate +"\"/>"
+"  <SRCQuality quality=\"SRC_SincBest\"/>"
+"  <EncodingOptions>"
+"    <Option name=\"sample-format\" value=\"SF_16\"/>"
+"    <Option name=\"dithering\" value=\"D_None\"/>"
+"    <Option name=\"tag-metadata\" value=\"true\"/>"
+"    <Option name=\"tag-support\" value=\"false\"/>"
+"    <Option name=\"broadcast-info\" value=\"false\"/>"
+"  </EncodingOptions>"
+"  <Processing>"
+"    <Normalize enabled=\""+ vtl_normalize +"\" target=\"0\"/>"
+"    <Silence>"
+"      <Start>"
+"        <Trim enabled=\"false\"/>"
+"        <Add enabled=\"false\">"
+"          <Duration format=\"Timecode\" hours=\"0\" minutes=\"0\" seconds=\"0\" frames=\"0\"/>"
+"        </Add>"
+"      </Start>"
+"      <End>"
+"        <Trim enabled=\"false\"/>"
+"        <Add enabled=\"false\">"
+"          <Duration format=\"Timecode\" hours=\"0\" minutes=\"0\" seconds=\"0\" frames=\"0\"/>"
+"        </Add>"
+"      </End>"
+"    </Silence>"
+"  </Processing>"
+"</ExportFormatSpecification>"
+));
+	boost::shared_ptr<ExportFormatSpecification> fmp = _session->get_export_handler()->add_format(*tree.root());
+
+	/* set up range */
+	framepos_t start, end;
+	start = end = 0;
+	if (insnd_combo.get_active_row_number() == 1) {
+		transcoder = new TranscodeFfmpeg(invid_path_entry.get_text());
+		if (transcoder->probe_ok()) {
+		  end = transcoder->get_duration() * _session->nominal_frame_rate() / transcoder->get_fps();
+		}
+		if (transcoder) { delete transcoder; transcoder = 0;}
+
+		frameoffset_t av_offset = ARDOUR_UI::instance()->video_timeline->get_offset();
+		if (av_offset > 0) {
+			start += (av_offset / (double)_session->nominal_frame_rate());
+		}
+		end += (av_offset / (double)_session->nominal_frame_rate());
+	}
+	if (end <= 0) {
+		start = _session->current_start_frame();
+		end   = _session->current_end_frame();
+	}
+#if 0 /* DEBUG */
+	printf("export-range %ld -> %ld\n", start,  end);
+#endif
+
+	tsp->set_range (start, end);
+	tsp->set_name ("mysession");
+	tsp->set_range_id ("session");
+
+	/* add master outs as default */
+	IO* master_out = _session->master_out()->output().get();
+	if (!master_out) {
+		warning << _("Export Video: No Master Out Ports to Connect for Audio Export") << endmsg;
+		Gtk::Dialog::response(RESPONSE_CANCEL);
+		return;
+	}
+	for (uint32_t n = 0; n < master_out->n_ports().n_audio(); ++n) {
+		PortExportChannel * channel = new PortExportChannel ();
+		channel->add_port (master_out->audio (n));
+		ExportChannelPtr chan_ptr (channel);
+		ccp->register_channel (chan_ptr);
+	}
+
+	/* outfile */
+	fnp->set_timespan(tsp);
+	fnp->set_label("vtl");
+	fnp->include_label = true;
+	insnd = fnp->get_path(fmp);
+
+	/* do sound export */
+	_session->get_export_handler()->add_export_config (tsp, ccp, fmp, fnp, b);
+	_session->get_export_handler()->do_export();
+  boost::shared_ptr<ARDOUR::ExportStatus> status = _session->get_export_status ();
+	//status->running = true;
+
+	float previous_progress = 0.0;
+  while (status->running) {
+		if (aborted) { status->abort(); }
+
+		float progress = 0.0;
+		if (status->normalizing) {
+			pbar.set_text (_("Normalizing audio"));
+			progress = ((float) status->current_normalize_cycle) / status->total_normalize_cycles;
+		} else {
+			pbar.set_text (_("Exporting audio"));
+			progress = ((float) status->processed_frames_current_timespan) / status->total_frames_current_timespan;
+		}
+		if (progress < previous_progress) {
+			// Work around gtk bug
+			pbar.hide();
+			pbar.show();
+		}
+		previous_progress = progress;
+		pbar.set_fraction (progress);
+    if (gtk_events_pending()) {
+      gtk_main_iteration ();
+    } else {
+      usleep (10000);
+    }
+  }
+  if (status->aborted()) {
+		unlink (insnd.c_str());
+		Gtk::Dialog::response(RESPONSE_CANCEL);
+		return;
+	}
+	status->finish ();
+	pbar.set_text (_("Encoding Video.."));
+	encode_pass(1);
+}
+
+void
+ExportVideoDialog::encode_pass (int pass)
+{
+	std::string outfn = outfn_path_entry.get_text();
+	std::string invid = invid_path_entry.get_text();
+
+	/* TODO: optimize
+	 * if (insnd_combo.get_active_row_number() == 0)
+	 * we can skip parsing the input video-file and use
+	 * new TranscodeFfmpeg("");
+	 */
+	transcoder = new TranscodeFfmpeg(invid);
+	if (!transcoder->ffexec_ok()) {
+		warning << _("No ffprobe or ffmpeg executables could be found on this system. Transcoding is not possible until you install those tools.") << endmsg;
+		unlink (insnd.c_str());
+		Gtk::Dialog::response(RESPONSE_CANCEL);
+		return;
+	}
+
+	std::string preset = preset_combo.get_active_text();
+	FFSettings ffs ; /* = transcoder->default_encoder_settings(); */
+	ffs.clear();
+
+	if (fps_checkbox.get_active()) {
+	  ffs["-r"] = fps_combo.get_active_text();
+	}
+
+	if (scale_checkbox.get_active()) {
+		ffs["-s"] = string_compose("%1x%2", width_spinner.get_value(), height_spinner.get_value());
+	}
+	ffs["-vcodec"] = video_codec_combo.get_active_text();
+	ffs["-acodec"] = audio_codec_combo.get_active_text();
+
+	if (video_bitrate_combo.get_active_text() == "retain" ) {
+		ffs["-sameq"]  = "-y"; // we use '-y' as dummy parameter for non key/value options
+	} else {
+		ffs["-b:v"]  = video_bitrate_combo.get_active_text();
+	}
+	ffs["-b:a"] = audio_bitrate_combo.get_active_text();
+	if (video_codec_combo.get_active_text() == "x264 (hq)" ) {
+		ffs["-vcodec"] = "libx264";
+		ffs["-vpre"] = "slow";
+	}
+	else if (video_codec_combo.get_active_text() == "x264 (default)" ) {
+		ffs["-vcodec"] = "libx264";
+		ffs["-vpre"] = "medium";
+	}
+
+	if (optimizations_checkbox.get_active()) {
+		/* TODO: define these smartly in a header-file so that they can be
+		 * merged for printing as label and used here easyly
+		 */
+	  if (video_codec_combo.get_active_text() == "mpeg2video") {
+			ffs["-mbd"] = "rd";
+			ffs["-trellis"] = "2";
+			ffs["-cmp"] = "2";
+			ffs["-subcmp"] = "2";
+		}
+		else if (video_codec_combo.get_active_text() == "mpeg4") {
+			ffs["-mbd"] = "rd";
+			ffs["-flags"] = "+4mv+aic";
+			ffs["-trellis"] = "2";
+			ffs["-cmp"] = "2";
+			ffs["-subcmp"] = "2";
+			ffs["-g"] = "300";
+		}
+		else if (video_codec_combo.get_active_text() == "flv") {
+			ffs["-mbd"] = "2";
+			ffs["-cmp"] = "2";
+			ffs["-subcmp"] = "2";
+			ffs["-trellis"] = "2";
+			ffs["-flags"] = "+aic+mv0+mv4";
+			ffs["-g"] = "160";
+		}
+	}
+
+	if (bframes_checkbox.get_active()) {
+		ffs["-bf"] = "2";
+	}
+
+	if (preset == "dvd-PAL") {
+		ffs.clear(); /* ignore all prev settings */
+		ffs["-target"] = "pal-dvd";
+		ffs["-aspect"] = "4:3"; /* required for DVD - may be overridden below */
+	}
+	else if (preset == "dvd-NTSC") {
+		ffs.clear(); /* ignore all prev settings */
+		ffs["-target"] = "ntsc-dvd";
+		ffs["-aspect"] = "4:3"; /* required for DVD - may be overridden below */
+	}
+
+	if (aspect_checkbox.get_active()) {
+		ffs["-aspect"] = aspect_combo.get_active_text();
+	}
+	if (deinterlace_checkbox.get_active()) {
+			ffs["-deinterlace"] = "-y"; // we use '-y' as dummy parameter for non key/value options
+	}
+
+	bool map = true;
+	if (pass == 1 && twopass) {
+		pbar.set_text (_("Encoding Video.. Pass 1/2"));
+		map = false;
+		ffs["-pass"] = "1";
+		ffs["-an"] = "-y";
+		ffs["-passlogfile"] =  Glib::path_get_dirname (outfn) + G_DIR_SEPARATOR + "ffmpeg2pass";
+		ffs["-f"] = get_file_extension(invid).empty()?"mov":get_file_extension(invid);
+#ifdef _OS_WIN32
+		outfn = "NUL";
+#else
+		outfn = "/dev/null";
+#endif
+	} else if (pass == 2) {
+		pbar.set_text (_("Encoding Video.. Pass 2/2"));
+		ffs["-pass"] = "2";
+		ffs["-passlogfile"] =  Glib::path_get_dirname (outfn) + G_DIR_SEPARATOR + "ffmpeg2pass";
+	}
+
+	frameoffset_t av_offset = ARDOUR_UI::instance()->video_timeline->get_offset();
+
+	if (insnd_combo.get_active_row_number() == 0) {
+		framecnt_t duration_f = _session->current_end_frame() - _session->current_start_frame();
+		double duration_s  = (double)duration_f / (double)_session->nominal_frame_rate();
+		std::ostringstream osstream; osstream << duration_s;
+		ffs["-t"] = osstream.str();
+		if (fps_checkbox.get_active()) {
+			transcoder->set_duration(duration_s * atof(fps_combo.get_active_text()));
+		} else {
+			transcoder->set_duration(duration_s * transcoder->get_fps());
+		}
+	} else {
+		;
+		// TODO use (end-start) from above
+		// in case offset is negative, video will be shorter..
+		// CHECK; maybe this is not needed -itsoffset may take care of it
+	}
+
+	if (insnd_combo.get_active_row_number() == 0) {
+		framepos_t start = _session->current_start_frame();
+#if 0
+		double start_s  = ((double)start / (double)_session->nominal_frame_rate());
+		std::ostringstream osstream; osstream << start_s;
+		ffs["-ss"] = osstream.str();
+#endif
+		av_offset -= start;
+	}
+	transcoder->set_avoffset(av_offset / (double)_session->nominal_frame_rate());
+
+	FFSettings meta = transcoder->default_meta_data();
+	if (meta_checkbox.get_active()) {
+		ARDOUR::SessionMetadata * session_data = ARDOUR::SessionMetadata::Metadata();
+		if (session_data->year() > 0 ) {
+			std::ostringstream osstream; osstream << session_data->year();
+			meta["year"] = osstream.str();
+		}
+		if (session_data->track_number() > 0 ) {
+			std::ostringstream osstream; osstream << session_data->track_number();
+			meta["track"] = osstream.str();
+		}
+		if (session_data->disc_number() > 0 ) {
+			std::ostringstream osstream; osstream << session_data->disc_number();
+			meta["disc"] = osstream.str();
+		}
+		if (!session_data->title().empty())  {meta["title"] = session_data->title();}
+		if (!session_data->artist().empty()) {meta["author"] = session_data->artist();}
+		if (!session_data->album_artist().empty()) {meta["album_artist"] = session_data->album_artist();}
+		if (!session_data->album().empty())  {meta["album"] = session_data->album();}
+		if (!session_data->genre().empty())  {meta["genre"] = session_data->genre();}
+		if (!session_data->composer().empty())  {meta["composer"] = session_data->composer();}
+		if (!session_data->comment().empty())   {meta["comment"] = session_data->comment();}
+		if (!session_data->copyright().empty()) {meta["copyright"] = session_data->copyright();}
+		if (!session_data->subtitle().empty())  {meta["description"] = session_data->subtitle();}
+	}
+
+#if 1 /* tentative debug mode */
+	if (debug_checkbox.get_active()) {
+		transcoder->set_debug(true);
+	}
+#endif
+
+	transcoder->Progress.connect(*this, invalidator (*this), boost::bind (&ExportVideoDialog::update_progress , this, _1, _2), gui_context());
+	transcoder->Finished.connect(*this, invalidator (*this), boost::bind (&ExportVideoDialog::finished, this), gui_context());
+	if (!transcoder->encode(outfn, insnd, invid, ffs, meta, map)) {
+		ARDOUR_UI::instance()->popup_error(_("Transcoding failed."));
+		Gtk::Dialog::response(RESPONSE_CANCEL);
+		return;
+	}
+}
+
+void
+ExportVideoDialog::change_file_extension (std::string ext)
+{
+	outfn_path_entry.set_text (
+	  strip_file_extension(outfn_path_entry.get_text()) + ext
+	);
+}
+
+void
+ExportVideoDialog::scale_checkbox_toggled ()
+{
+	width_spinner.set_sensitive(scale_checkbox.get_active());
+	height_spinner.set_sensitive(scale_checkbox.get_active());
+}
+
+void
+ExportVideoDialog::fps_checkbox_toggled ()
+{
+	fps_combo.set_sensitive(fps_checkbox.get_active());
+}
+
+void
+ExportVideoDialog::aspect_checkbox_toggled ()
+{
+	aspect_combo.set_sensitive(aspect_checkbox.get_active());
+}
+
+void
+ExportVideoDialog::video_codec_combo_changed ()
+{
+	if ((  video_codec_combo.get_active_text() == "mpeg4"
+	     ||video_codec_combo.get_active_text() == "mpeg2video"
+	     ||video_codec_combo.get_active_text() == "flv"
+			) && !(
+	       preset_combo.get_active_text() == "dvd-PAL"
+	     ||preset_combo.get_active_text() == "dvd-NTSC"
+	   )) {
+		bframes_checkbox.set_sensitive(true);
+		optimizations_checkbox.set_sensitive(true);
+	  if (video_codec_combo.get_active_text() == "mpeg2video") {
+			optimizations_label.set_text("-mbd rd -trellis 2 -cmp 2 -subcmp 2"); // mpeg2
+		} else if (video_codec_combo.get_active_text() == "mpeg4") {
+			optimizations_label.set_text("-mbd rd -flags +4mv+aic -trellis 2 -cmp 2 -subcmp 2 -g 300"); // mpeg4
+		} else {
+			optimizations_label.set_text("-mbd 2 -cmp 2 -subcmp 2 -trellis 2 -flags +aic+mv0+mv4 -g 160"); // flv
+		}
+	} else {
+		bframes_checkbox.set_sensitive(false);
+		bframes_checkbox.set_active(false);
+		optimizations_checkbox.set_sensitive(false);
+		optimizations_checkbox.set_active(false);
+		optimizations_label.set_text("-");
+	}
+}
+
+void
+ExportVideoDialog::preset_combo_changed ()
+{
+	std::string p = preset_combo.get_active_text();
+	scale_checkbox.set_sensitive(true);
+
+	if (p == "flv") {
+		change_file_extension(".flv");
+		audio_codec_combo.set_active(1);
+		video_codec_combo.set_active(0);
+		audio_bitrate_combo.set_active(1);
+		video_bitrate_combo.set_active(1);
+		audio_samplerate_combo.set_active(1);
+	}
+	else if (p == "you-tube") {
+		change_file_extension(".avi");
+		audio_codec_combo.set_active(2);
+		video_codec_combo.set_active(5);
+		audio_bitrate_combo.set_active(1);
+		video_bitrate_combo.set_active(2);
+		if (_session->nominal_frame_rate() == 48000 || _session->nominal_frame_rate() == 96000) {
+			audio_samplerate_combo.set_active(2);
+		} else {
+			audio_samplerate_combo.set_active(1);
+		}
+	}
+	else if (p == "ogg") {
+		change_file_extension(".ogv");
+		audio_codec_combo.set_active(3);
+		video_codec_combo.set_active(1);
+		audio_bitrate_combo.set_active(2);
+		video_bitrate_combo.set_active(2);
+		if (_session->nominal_frame_rate() == 48000 || _session->nominal_frame_rate() == 96000) {
+			audio_samplerate_combo.set_active(2);
+		} else {
+			audio_samplerate_combo.set_active(1);
+		}
+	}
+	else if (p == "dvd-mp2") {
+		change_file_extension(".mpg");
+		audio_codec_combo.set_active(4);
+		video_codec_combo.set_active(3);
+		audio_bitrate_combo.set_active(3);
+		video_bitrate_combo.set_active(3);
+		audio_samplerate_combo.set_active(2);
+	}
+	else if (p == "dvd-NTSC" || p == "dvd-PAL") {
+		change_file_extension(".mpg");
+		audio_codec_combo.set_active(5);
+		video_codec_combo.set_active(3);
+		audio_bitrate_combo.set_active(3);
+		video_bitrate_combo.set_active(3);
+		audio_samplerate_combo.set_active(2);
+
+	  scale_checkbox.set_active(false);
+	  scale_checkbox.set_sensitive(false);
+	}
+	else if (p == "mpeg4") {
+		change_file_extension(".mp4");
+		audio_codec_combo.set_active(0);
+		video_codec_combo.set_active(4);
+		audio_bitrate_combo.set_active(3);
+		video_bitrate_combo.set_active(3);
+		if (_session->nominal_frame_rate() == 48000 || _session->nominal_frame_rate() == 96000) {
+			audio_samplerate_combo.set_active(2);
+		} else {
+			audio_samplerate_combo.set_active(1);
+		}
+	}
+
+	if (p == "none") {
+		audio_codec_combo.set_sensitive(true);
+		video_codec_combo.set_sensitive(true);
+		audio_bitrate_combo.set_sensitive(true);
+		video_bitrate_combo.set_sensitive(true);
+		audio_samplerate_combo.set_sensitive(true);
+	} else {
+		audio_codec_combo.set_sensitive(false);
+		video_codec_combo.set_sensitive(false);
+		audio_bitrate_combo.set_sensitive(false);
+		video_bitrate_combo.set_sensitive(false);
+		audio_samplerate_combo.set_sensitive(false);
+	}
+
+	Gtk::Table *t = (Gtk::Table*) preset_combo.get_parent();
+	Gtk::Table_Helpers::TableList c = t->children();
+	Gtk::Table_Helpers::TableList::iterator it;
+	if (p == "dvd-PAL" || p == "dvd-NTSC") {
+		for (it = c.begin(); it != c.end(); ++it) {
+			int row = it->get_top_attach();
+			if (row ==1 || row ==2 || row==4 || row==5 || row == 8) {
+			  it->get_widget()->hide();
+			}
+		}
+	} else {
+		for (it = c.begin(); it != c.end(); ++it) {
+			int row = it->get_top_attach();
+			if (row ==1 || row ==2 || row==4 || row==5 || row == 8) {
+			  it->get_widget()->show();
+			}
+		}
+	}
+
+	video_codec_combo_changed();
+}
+
+void
+ExportVideoDialog::open_outfn_dialog ()
+{
+	Gtk::FileChooserDialog dialog(_("Save Exported Video File"), Gtk::FILE_CHOOSER_ACTION_SAVE);
+	dialog.set_filename (outfn_path_entry.get_text());
+
+	dialog.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
+	dialog.add_button(Gtk::Stock::OK, Gtk::RESPONSE_OK);
+
+	int result = dialog.run();
+
+	if (result == Gtk::RESPONSE_OK) {
+		std::string filename = dialog.get_filename();
+
+		if (filename.length()) {
+			outfn_path_entry.set_text (filename);
+		}
+	}
+}
+
+void
+ExportVideoDialog::open_invid_dialog ()
+{
+	Gtk::FileChooserDialog dialog(_("Save Exported Video File"), Gtk::FILE_CHOOSER_ACTION_SAVE);
+	dialog.set_filename (invid_path_entry.get_text());
+
+	dialog.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
+	dialog.add_button(Gtk::Stock::OK, Gtk::RESPONSE_OK);
+
+	int result = dialog.run();
+
+	if (result == Gtk::RESPONSE_OK) {
+		std::string filename = dialog.get_filename();
+
+		if (filename.length()) {
+			invid_path_entry.set_text (filename);
+		}
+	}
+}
+
+#endif /* WITH_VIDEOTIMELINE */