gtk2_ardour/export_video_dialog.cc

   1 /*
   2     Copyright (C) 2010 Paul Davis
   3     Author: Robin Gareus <robin@gareus.org>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19 */
  20 #include <cstdio>
  21 #include <string>
  22 #include <sstream>
  23 #include <iomanip>
  24
  25 #include <unistd.h>
  26 #include <sys/types.h>
  27 #include <sys/stat.h>
  28 #include <fcntl.h>
  29
  30 #include <sigc++/bind.h>
  31
  32 #include <glib/gstdio.h>
  33
  34 #include "pbd/error.h"
  35 #include "pbd/convert.h"
  36 #include "gtkmm2ext/keyboard.h"
  37 #include "gtkmm2ext/utils.h"
  38 #include "ardour/session_directory.h"
  39 #include "ardour/profile.h"
  40 #include "ardour/template_utils.h"
  41 #include "ardour/session.h"
  42 #include "ardour_ui.h"
  43 #include "gui_thread.h"
  44
  45 #include "ardour/export_handler.h"
  46 #include "ardour/export_status.h"
  47 #include "ardour/export_timespan.h"
  48 #include "ardour/export_channel_configuration.h"
  49 #include "ardour/export_format_specification.h"
  50 #include "ardour/export_filename.h"
  51 #include "ardour/route.h"
  52 #include "ardour/session_metadata.h"
  53 #include "ardour/broadcast_info.h"
  54
  55 #include "opts.h"
  56 #include "export_video_dialog.h"
  57 #include "utils_videotl.h"
  58 #include "i18n.h"
  59
  60 using namespace Gtk;
  61 using namespace std;
  62 using namespace PBD;
  63 using namespace ARDOUR;
  64 using namespace VideoUtils;
  65
  66 ExportVideoDialog::ExportVideoDialog (Session* s, TimeSelection &tme, bool range)
  67         : ArdourDialog (_("Export Video File "))
  68         , export_range (tme)
  69         , outfn_path_label (_("File:"), Gtk::ALIGN_LEFT)
  70         , outfn_browse_button (_("Browse"))
  71         , invid_path_label (_("Video:"), Gtk::ALIGN_LEFT)
  72         , invid_browse_button (_("Browse"))
  73         , transcode_button (_("Export"))
  74         , abort_button (_("Abort"))
  75         , scale_checkbox (_("Scale Video (W x H):"))
  76         , width_adjustment (768, 128, 1920, 1, 16, 0)
  77         , width_spinner (width_adjustment)
  78         , height_adjustment (576, 128, 1920, 1, 16, 0)
  79         , height_spinner (height_adjustment)
  80         , aspect_checkbox (_("Set Aspect Ratio:"))
  81         , normalize_checkbox (_("Normalize Audio"))
  82         , twopass_checkbox (_("2 Pass Encoding"))
  83         , optimizations_checkbox (_("Codec Optimizations:"))
  84         , optimizations_label ("-")
  85         , deinterlace_checkbox (_("Deinterlace"))
  86         , bframes_checkbox (_("Use [2] B-frames (MPEG 2 or 4 only)"))
  87         , fps_checkbox (_("Override FPS (Default is to retain FPS from the input video file):"))
  88         , meta_checkbox (_("Include Session Metadata"))
  89 #if 1 /* tentative debug mode */
  90         , debug_checkbox (_("Debug Mode: Print ffmpeg command and output to stdout."))
  91 #endif
  92 {
  93         set_session (s);
  94
  95         set_name ("ExportVideoDialog");
  96         set_modal (true);
  97         set_skip_taskbar_hint (true);
  98         set_resizable (false);
  99
 100         Gtk::Label* l;
 101         vbox = manage (new VBox);
 102         VBox* options_box = manage (new VBox);
 103         HBox* path_hbox;
 104
 105         /* check if ffmpeg can be found */
 106         transcoder = new TranscodeFfmpeg("");
 107         if (!transcoder->ffexec_ok()) {
 108                 l = manage (new Label (_("No ffprobe or ffmpeg executables could be found on this system. Video Export is not possible until you install those tools. See the Log window for more information."), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
 109                 l->set_line_wrap();
 110                 vbox->pack_start (*l, false, false, 8);
 111                 get_vbox()->pack_start (*vbox, false, false);
 112                 add_button (Stock::OK, RESPONSE_CANCEL);
 113                 show_all_children ();
 114                 return;
 115         }
 116         delete transcoder; transcoder = 0;
 117
 118         l = manage (new Label (_("<b>Output:</b> (file extension defines format)"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
 119         l->set_use_markup ();
 120         vbox->pack_start (*l, false, false, 4);
 121
 122         path_hbox = manage (new HBox);
 123         path_hbox->pack_start (outfn_path_label, false, false, 3);
 124         path_hbox->pack_start (outfn_path_entry, true, true, 3);
 125         path_hbox->pack_start (outfn_browse_button, false, false, 3);
 126         vbox->pack_start (*path_hbox, false, false, 2);
 127
 128         l = manage (new Label (_("<b>Input Video:</b>"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
 129         l->set_use_markup ();
 130         vbox->pack_start (*l, false, false, 4);
 131
 132         path_hbox = manage (new HBox);
 133         path_hbox->pack_start (invid_path_label, false, false, 3);
 134         path_hbox->pack_start (invid_path_entry, true, true, 3);
 135         path_hbox->pack_start (invid_browse_button, false, false, 3);
 136         vbox->pack_start (*path_hbox, false, false, 2);
 137
 138         path_hbox = manage (new HBox);
 139         l = manage (new Label (_("Audio:"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
 140         path_hbox->pack_start (*l, false, false, 3);
 141         l = manage (new Label (_("Master Bus"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
 142         path_hbox->pack_start (*l, false, false, 2);
 143         vbox->pack_start (*path_hbox, false, false, 2);
 144
 145         insnd_combo.set_name ("PaddedButton");
 146         insnd_combo.append_text (string_compose (_("from the %1 session's start to the session's end"), PROGRAM_NAME));
 147
 148         frameoffset_t av_offset = ARDOUR_UI::instance()->video_timeline->get_offset();
 149         if (av_offset < 0 ) {
 150                 insnd_combo.append_text (_("from 00:00:00:00 to the video's end"));
 151         } else {
 152                 insnd_combo.append_text (_("from the video's start to the video's end"));
 153         }
 154         if (!export_range.empty()) {
 155                 insnd_combo.append_text (_("Selected range"));  // TODO show export_range.start() -> export_range.end_frame()
 156         }
 157         if (range) {
 158                 insnd_combo.set_active(2);
 159         } else {
 160                 insnd_combo.set_active(0);
 161         }
 162
 163         outfn_path_entry.set_width_chars(38);
 164         outfn_path_entry.set_text (_session->session_directory().export_path() + G_DIR_SEPARATOR +"export.avi");
 165
 166         XMLNode* node = _session->extra_xml (X_("Videotimeline"));
 167         if (node) {
 168                 bool filenameset = false;
 169                 if (node->property(X_("OriginalVideoFile"))) {
 170                         std::string filename = node->property(X_("OriginalVideoFile"))->value();
 171                         if (Glib::file_test(filename, Glib::FILE_TEST_EXISTS)) {
 172                                 invid_path_entry.set_text (filename);
 173                                 filenameset = true;
 174                         }
 175                 }
 176                 if (!filenameset
 177                                 && node->property(X_("Filename"))
 178                                 && node->property(X_("LocalFile"))
 179                                 && node->property(X_("LocalFile"))->value() == X_("1")
 180                                 ) {
 181                         std::string filename = node->property(X_("Filename"))->value();
 182                         if (filename.at(0) != G_DIR_SEPARATOR) {
 183                                 filename = Glib::build_filename (_session->session_directory().video_path(), filename);
 184                         }
 185                         if (Glib::file_test(filename, Glib::FILE_TEST_EXISTS)) {
 186                                 invid_path_entry.set_text (filename);
 187                                 filenameset = true;
 188                         }
 189                 }
 190                 if (!filenameset) {
 191                         invid_path_entry.set_text (X_(""));
 192                 }
 193         }
 194
 195         l = manage (new Label (_("<b>Settings:</b>"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
 196         l->set_use_markup ();
 197         options_box->pack_start (*l, false, true, 4);
 198
 199         Table* t = manage (new Table (4, 12));
 200         t->set_spacings (4);
 201         int ty = 0;
 202         options_box->pack_start (*t, true, true, 4);
 203         l = manage (new Label (_("Range:"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
 204         t->attach (*l, 0, 1, ty, ty+1);
 205         t->attach (insnd_combo, 1, 4, ty, ty+1); ty++;
 206         l = manage (new Label (_("Preset:"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
 207         t->attach (*l, 0, 1, ty, ty+1);
 208         t->attach (preset_combo, 1, 4, ty, ty+1); ty++;
 209         l = manage (new Label (_("Video Codec:"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
 210         t->attach (*l, 0, 1, ty, ty+1);
 211         t->attach (video_codec_combo, 1, 2, ty, ty+1);
 212         l = manage (new Label (_("Video KBit/s:"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
 213         t->attach (*l, 2, 3, ty, ty+1);
 214         t->attach (video_bitrate_combo, 3, 4, ty, ty+1); ty++;
 215         l = manage (new Label (_("Audio Codec:"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
 216         t->attach (*l, 0, 1, ty, ty+1);
 217         t->attach (audio_codec_combo, 1, 2, ty, ty+1);
 218         l = manage (new Label (_("Audio KBit/s:"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
 219         t->attach (*l, 2, 3, ty, ty+1);
 220         t->attach (audio_bitrate_combo, 3, 4, ty, ty+1); ty++;
 221         l = manage (new Label (_("Audio Samplerate:"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
 222         t->attach (*l, 0, 1, ty, ty+1);
 223         t->attach (audio_samplerate_combo, 1, 2, ty, ty+1);
 224         t->attach (normalize_checkbox, 2, 4, ty, ty+1); ty++;
 225         t->attach (scale_checkbox, 0, 2, ty, ty+1);
 226         t->attach (width_spinner, 2, 3, ty, ty+1);
 227         t->attach (height_spinner, 3, 4, ty, ty+1); ty++;
 228         t->attach (fps_checkbox, 0, 3, ty, ty+1);
 229         t->attach (fps_combo, 3, 4, ty, ty+1); ty++;
 230         t->attach (twopass_checkbox, 0, 2, ty, ty+1);
 231         t->attach (aspect_checkbox, 2, 3, ty, ty+1);
 232         t->attach (aspect_combo, 3, 4, ty, ty+1); ty++;
 233         t->attach (bframes_checkbox, 0, 2, ty, ty+1);
 234         t->attach (deinterlace_checkbox, 2, 4, ty, ty+1); ty++;
 235         t->attach (meta_checkbox, 2, 4, ty, ty+1); ty++;
 236         t->attach (optimizations_checkbox, 0, 1, ty, ty+1);
 237         t->attach (optimizations_label, 1, 4, ty, ty+1); ty++;
 238 #if 1 /* tentative debug mode */
 239         t->attach (debug_checkbox, 0, 4, ty, ty+1); ty++;
 240 #endif
 241
 242         preset_combo.set_name ("PaddedButton");
 243         preset_combo.append_text("none");
 244         preset_combo.append_text("dvd-mp2");
 245         preset_combo.append_text("dvd-NTSC");
 246         preset_combo.append_text("dvd-PAL");
 247         preset_combo.append_text("flv");
 248         preset_combo.append_text("mpeg4");
 249         preset_combo.append_text("ogg");
 250         preset_combo.append_text("you-tube");
 251         preset_combo.set_active(0);
 252
 253         audio_codec_combo.set_name ("PaddedButton");
 254         audio_codec_combo.append_text(_("(default for format)"));
 255         audio_codec_combo.append_text("ac3");
 256         audio_codec_combo.append_text("aac");
 257         audio_codec_combo.append_text("libmp3lame");
 258         audio_codec_combo.append_text("libvorbis");
 259         audio_codec_combo.append_text("mp2");
 260         audio_codec_combo.append_text("pcm_s16le");
 261         audio_codec_combo.set_active(0);
 262
 263         video_codec_combo.set_name ("PaddedButton");
 264         video_codec_combo.append_text(_("(default for format)"));
 265         video_codec_combo.append_text("flv");
 266         video_codec_combo.append_text("libtheora");
 267         video_codec_combo.append_text("mjpeg");
 268         video_codec_combo.append_text("mpeg2video");
 269         video_codec_combo.append_text("mpeg4");
 270         video_codec_combo.append_text("h264");
 271         video_codec_combo.append_text("vpx (webm)");
 272         video_codec_combo.append_text("copy");
 273         video_codec_combo.set_active(0);
 274
 275         audio_bitrate_combo.set_name ("PaddedButton");
 276         audio_bitrate_combo.append_text(_("(default)"));
 277         audio_bitrate_combo.append_text("64k");
 278         audio_bitrate_combo.append_text("128k");
 279         audio_bitrate_combo.append_text("192k");
 280         audio_bitrate_combo.append_text("256k");
 281         audio_bitrate_combo.append_text("320k");
 282         audio_bitrate_combo.set_active(0);
 283
 284         audio_samplerate_combo.set_name ("PaddedButton");
 285         audio_samplerate_combo.append_text("22050");
 286         audio_samplerate_combo.append_text("44100");
 287         audio_samplerate_combo.append_text("48000");
 288         audio_samplerate_combo.set_active(2);
 289
 290         video_bitrate_combo.set_name ("PaddedButton");
 291         video_bitrate_combo.append_text(_("(default)"));
 292         video_bitrate_combo.append_text(_("(retain)"));
 293         video_bitrate_combo.append_text("200k");
 294         video_bitrate_combo.append_text("800k");
 295         video_bitrate_combo.append_text("2000k");
 296         video_bitrate_combo.append_text("5000k");
 297         video_bitrate_combo.append_text("8000k");
 298         video_bitrate_combo.set_active(0);
 299
 300         fps_combo.set_name ("PaddedButton");
 301         fps_combo.append_text("23.976");
 302         fps_combo.append_text("24");
 303         fps_combo.append_text("24.976");
 304         fps_combo.append_text("25");
 305         fps_combo.append_text("29.97");
 306         fps_combo.append_text("30");
 307         fps_combo.append_text("59.94");
 308         fps_combo.append_text("60");
 309         float tcfps = _session->timecode_frames_per_second();
 310         if      (fabs(tcfps - 23.976) < 0.01) { fps_combo.set_active(0); }
 311         else if (fabs(tcfps - 24.0  ) < 0.01) { fps_combo.set_active(1); }
 312         else if (fabs(tcfps - 24.976) < 0.01) { fps_combo.set_active(2); }
 313         else if (fabs(tcfps - 25.0  ) < 0.01) { fps_combo.set_active(3); }
 314         else if (fabs(tcfps - 29.97 ) < 0.01) { fps_combo.set_active(4); }
 315         else if (fabs(tcfps - 30.0  ) < 0.01) { fps_combo.set_active(5); }
 316         else if (fabs(tcfps - 59.94 ) < 0.01) { fps_combo.set_active(6); }
 317         else if (fabs(tcfps - 60.0  ) < 0.01) { fps_combo.set_active(7); }
 318         else { fps_combo.set_active(5); }
 319
 320         aspect_combo.set_name ("PaddedButton");
 321         aspect_combo.append_text("4:3");
 322         aspect_combo.append_text("16:9");
 323         aspect_combo.set_active(1);
 324
 325         optimizations_checkbox.set_sensitive(false);
 326         scale_checkbox_toggled();
 327         aspect_checkbox_toggled();
 328         fps_checkbox_toggled();
 329         video_codec_combo_changed();
 330
 331         vbox->pack_start (*options_box, false, true, 4);
 332         get_vbox()->set_spacing (4);
 333         get_vbox()->pack_start (*vbox, false, false);
 334
 335         progress_box = manage (new VBox);
 336         progress_box->pack_start (pbar, false, false);
 337         progress_box->pack_start (abort_button, false, false);
 338         get_vbox()->pack_start (*progress_box, false, false);
 339
 340         scale_checkbox.signal_toggled().connect (sigc::mem_fun (*this, &ExportVideoDialog::scale_checkbox_toggled));
 341         aspect_checkbox.signal_toggled().connect (sigc::mem_fun (*this, &ExportVideoDialog::aspect_checkbox_toggled));
 342         fps_checkbox.signal_toggled().connect (sigc::mem_fun (*this, &ExportVideoDialog::fps_checkbox_toggled));
 343         preset_combo.signal_changed().connect (sigc::mem_fun (*this, &ExportVideoDialog::preset_combo_changed));
 344         video_codec_combo.signal_changed().connect (sigc::mem_fun (*this, &ExportVideoDialog::video_codec_combo_changed));
 345         outfn_browse_button.signal_clicked().connect (sigc::mem_fun (*this, &ExportVideoDialog::open_outfn_dialog));
 346         invid_browse_button.signal_clicked().connect (sigc::mem_fun (*this, &ExportVideoDialog::open_invid_dialog));
 347         transcode_button.signal_clicked().connect (sigc::mem_fun (*this, &ExportVideoDialog::launch_export));
 348         abort_button.signal_clicked().connect (sigc::mem_fun (*this, &ExportVideoDialog::abort_clicked));
 349
 350         cancel_button = add_button (Stock::CANCEL, RESPONSE_CANCEL);
 351         get_action_area()->pack_start (transcode_button, false, false);
 352         show_all_children ();
 353         progress_box->hide();
 354 }
 355
 356 ExportVideoDialog::~ExportVideoDialog ()
 357 {
 358         if (transcoder) { delete transcoder; transcoder = 0;}
 359 }
 360
 361 void
 362 ExportVideoDialog::on_show ()
 363 {
 364         Dialog::on_show ();
 365 }
 366
 367 bool
 368 ExportVideoDialog::on_focus_in_event (GdkEventFocus *ev)
 369 {
 370         Dialog::on_focus_in_event (ev);
 371         Gtkmm2ext::Keyboard::magic_widget_grab_focus ();
 372         return true;
 373 }
 374
 375 bool
 376 ExportVideoDialog::on_focus_out_event (GdkEventFocus *ev)
 377 {
 378         Dialog::on_focus_out_event (ev);
 379         Gtkmm2ext::Keyboard::magic_widget_drop_focus ();
 380         return true;
 381 }
 382
 383 void
 384 ExportVideoDialog::abort_clicked ()
 385 {
 386         aborted = true;
 387         if (transcoder) {
 388                 transcoder->cancel();
 389         }
 390 }
 391
 392 void
 393 ExportVideoDialog::update_progress (framecnt_t c, framecnt_t a)
 394 {
 395         if (a == 0 || c > a) {
 396                 pbar.set_pulse_step(.1);
 397                 pbar.pulse();
 398         } else {
 399                 double progress = (double)c / (double) a;
 400                 progress = progress / ((twopass ? 2.0 : 1.0) + (normalize ? 2.0 : 1.0));
 401                 if (normalize && twopass) progress += (firstpass ? .5 : .75);
 402                 else if (normalize) progress += 2.0/3.0;
 403                 else if (twopass) progress += (firstpass ? 1.0/3.0 : 2.0/3.0);
 404                 else progress += .5;
 405
 406                 pbar.set_fraction (progress);
 407         }
 408 }
 409
 410
 411 gint
 412 ExportVideoDialog::audio_progress_display ()
 413 {
 414         std::string status_text;
 415         double progress = 0.0;
 416                 if (status->normalizing) {
 417                         pbar.set_text (_("Normalizing audio"));
 418                         progress = ((float) status->current_normalize_cycle) / status->total_normalize_cycles;
 419                         progress = progress / (twopass ? 4.0 : 3.0) + (twopass ? .25 : 1.0/3.0);
 420                 } else {
 421                         pbar.set_text (_("Exporting audio"));
 422                         progress = ((float) status->processed_frames_current_timespan) / status->total_frames_current_timespan;
 423                         progress = progress / ((twopass ? 2.0 : 1.0) + (normalize ? 2.0 : 1.0));
 424                 }
 425                 if (progress < previous_progress) {
 426                         // Work around gtk bug
 427                         pbar.hide();
 428                         pbar.show();
 429                 }
 430                 previous_progress = progress;
 431                 pbar.set_fraction (progress);
 432         return TRUE;
 433 }
 434
 435 void
 436 ExportVideoDialog::finished ()
 437 {
 438         if (aborted) {
 439                 ::g_unlink(outfn_path_entry.get_text().c_str());
 440                 ::g_unlink (insnd.c_str());
 441                 Gtk::Dialog::response(RESPONSE_CANCEL);
 442         } else if (twopass && firstpass) {
 443                 firstpass = false;
 444                 if (transcoder) { delete transcoder; transcoder = 0;}
 445                 encode_pass(2);
 446         } else {
 447                 if (twopass_checkbox.get_active()) {
 448                         std::string outfn = outfn_path_entry.get_text();
 449                         std::string p2log = Glib::path_get_dirname (outfn) + G_DIR_SEPARATOR + "ffmpeg2pass";
 450                         ::g_unlink (p2log.c_str());
 451                 }
 452                 ::g_unlink (insnd.c_str());
 453                 Gtk::Dialog::response(RESPONSE_ACCEPT);
 454         }
 455 }
 456
 457 void
 458 ExportVideoDialog::launch_export ()
 459 {
 460         std::string outfn = outfn_path_entry.get_text();
 461         if (!confirm_video_outfn(outfn)) { return; }
 462
 463         vbox->hide();
 464         cancel_button->hide();
 465         transcode_button.hide();
 466         pbar.set_size_request(300,-1);
 467         pbar.set_text(_("Exporting Audio..."));
 468         progress_box->show();
 469         aborted = false;
 470         twopass = twopass_checkbox.get_active();
 471         firstpass = true;
 472         normalize = normalize_checkbox.get_active();
 473
 474         /* export audio track */
 475         ExportTimespanPtr tsp = _session->get_export_handler()->add_timespan();
 476         boost::shared_ptr<ExportChannelConfiguration> ccp = _session->get_export_handler()->add_channel_config();
 477         boost::shared_ptr<ARDOUR::ExportFilename> fnp = _session->get_export_handler()->add_filename();
 478         boost::shared_ptr<AudioGrapher::BroadcastInfo> b;
 479         XMLTree tree;
 480         std::string vtl_samplerate = audio_samplerate_combo.get_active_text();
 481         std::string vtl_normalize = normalize ? "true" : "false";
 482         tree.read_buffer(std::string(
 483 "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
 484 "<ExportFormatSpecification name=\"VTL-WAV-16\" id=\"3094591e-ccb9-4385-a93f-c9955ffeb1f0\">"
 485 "  <Encoding id=\"F_WAV\" type=\"T_Sndfile\" extension=\"wav\" name=\"WAV\" has-sample-format=\"true\" channel-limit=\"256\"/>"
 486 "  <SampleRate rate=\""+ vtl_samplerate +"\"/>"
 487 "  <SRCQuality quality=\"SRC_SincBest\"/>"
 488 "  <EncodingOptions>"
 489 "    <Option name=\"sample-format\" value=\"SF_16\"/>"
 490 "    <Option name=\"dithering\" value=\"D_None\"/>"
 491 "    <Option name=\"tag-metadata\" value=\"true\"/>"
 492 "    <Option name=\"tag-support\" value=\"false\"/>"
 493 "    <Option name=\"broadcast-info\" value=\"false\"/>"
 494 "  </EncodingOptions>"
 495 "  <Processing>"
 496 "    <Normalize enabled=\""+ vtl_normalize +"\" target=\"0\"/>"
 497 "    <Silence>"
 498 "      <Start>"
 499 "        <Trim enabled=\"false\"/>"
 500 "        <Add enabled=\"false\">"
 501 "          <Duration format=\"Timecode\" hours=\"0\" minutes=\"0\" seconds=\"0\" frames=\"0\"/>"
 502 "        </Add>"
 503 "      </Start>"
 504 "      <End>"
 505 "        <Trim enabled=\"false\"/>"
 506 "        <Add enabled=\"false\">"
 507 "          <Duration format=\"Timecode\" hours=\"0\" minutes=\"0\" seconds=\"0\" frames=\"0\"/>"
 508 "        </Add>"
 509 "      </End>"
 510 "    </Silence>"
 511 "  </Processing>"
 512 "</ExportFormatSpecification>"
 513 ));
 514         boost::shared_ptr<ExportFormatSpecification> fmp = _session->get_export_handler()->add_format(*tree.root());
 515
 516         /* set up range */
 517         framepos_t start, end;
 518         start = end = 0;
 519         if (insnd_combo.get_active_row_number() == 1) {
 520                 transcoder = new TranscodeFfmpeg(invid_path_entry.get_text());
 521                 if (transcoder->probe_ok() && transcoder->get_fps() > 0) {
 522                         end = transcoder->get_duration() * _session->nominal_frame_rate() / transcoder->get_fps();
 523                 } else {
 524                         warning << _("Export Video: Cannot query duration of video-file, using duration from timeline instead.") << endmsg;
 525                         end = ARDOUR_UI::instance()->video_timeline->get_duration();
 526                 }
 527                 if (transcoder) {delete transcoder; transcoder = 0;}
 528
 529                 frameoffset_t av_offset = ARDOUR_UI::instance()->video_timeline->get_offset();
 530 #if 0 /* DEBUG */
 531                 printf("audio-range -- AV offset: %lld\n", av_offset);
 532 #endif
 533                 if (av_offset > 0) {
 534                         start = av_offset;
 535                 }
 536                 end += av_offset;
 537         }
 538         else if (insnd_combo.get_active_row_number() == 2) {
 539                 start = ARDOUR_UI::instance()->video_timeline->quantify_frames_to_apv(export_range.start());
 540                 end   = ARDOUR_UI::instance()->video_timeline->quantify_frames_to_apv(export_range.end_frame());
 541         }
 542         if (end <= 0) {
 543                 start = _session->current_start_frame();
 544                 end   = _session->current_end_frame();
 545         }
 546 #if 0 /* DEBUG */
 547         printf("audio export-range %lld -> %lld\n", start, end);
 548 #endif
 549
 550         const frameoffset_t vstart = ARDOUR_UI::instance()->video_timeline->get_offset();
 551         const frameoffset_t vend   = vstart + ARDOUR_UI::instance()->video_timeline->get_duration();
 552
 553         if ( (start >= end) || (end < vstart) || (start > vend)) {
 554                 warning << _("Export Video: export-range does not include video.") << endmsg;
 555                 Gtk::Dialog::response(RESPONSE_CANCEL);
 556                 return;
 557         }
 558
 559         tsp->set_range (start, end);
 560         tsp->set_name ("mysession");
 561         tsp->set_range_id ("session");
 562
 563         /* add master outs as default */
 564         IO* master_out = _session->master_out()->output().get();
 565         if (!master_out) {
 566                 warning << _("Export Video: No Master Out Ports to Connect for Audio Export") << endmsg;
 567                 Gtk::Dialog::response(RESPONSE_CANCEL);
 568                 return;
 569         }
 570         for (uint32_t n = 0; n < master_out->n_ports().n_audio(); ++n) {
 571                 PortExportChannel * channel = new PortExportChannel ();
 572                 channel->add_port (master_out->audio (n));
 573                 ExportChannelPtr chan_ptr (channel);
 574                 ccp->register_channel (chan_ptr);
 575         }
 576
 577         /* outfile */
 578         fnp->set_timespan(tsp);
 579         fnp->set_label("vtl");
 580         fnp->include_label = true;
 581         insnd = fnp->get_path(fmp);
 582
 583         /* do sound export */
 584         fmp->set_soundcloud_upload(false);
 585         _session->get_export_handler()->add_export_config (tsp, ccp, fmp, fnp, b);
 586         _session->get_export_handler()->do_export();
 587         status = _session->get_export_status ();
 588
 589         audio_progress_connection = Glib::signal_timeout().connect (sigc::mem_fun(*this, &ExportVideoDialog::audio_progress_display), 100);
 590         previous_progress = 0.0;
 591         while (status->running) {
 592                 if (aborted) { status->abort(); }
 593                 if (gtk_events_pending()) {
 594                         gtk_main_iteration ();
 595                 } else {
 596                         Glib::usleep (10000);
 597                 }
 598         }
 599         audio_progress_connection.disconnect();
 600         status->finish ();
 601         if (status->aborted()) {
 602                 ::g_unlink (insnd.c_str());
 603                 Gtk::Dialog::response(RESPONSE_CANCEL);
 604                 return;
 605         }
 606         pbar.set_text (_("Encoding Video..."));
 607         encode_pass(1);
 608 }
 609
 610 void
 611 ExportVideoDialog::encode_pass (int pass)
 612 {
 613         std::string outfn = outfn_path_entry.get_text();
 614         std::string invid = invid_path_entry.get_text();
 615
 616         transcoder = new TranscodeFfmpeg(invid);
 617         if (!transcoder->ffexec_ok()) {
 618                 /* ffmpeg binary was not found. TranscodeFfmpeg prints a warning */
 619                 ::g_unlink (insnd.c_str());
 620                 Gtk::Dialog::response(RESPONSE_CANCEL);
 621                 return;
 622         }
 623         if (!transcoder->probe_ok()) {
 624                 /* video input file can not be read */
 625                 warning << _("Export Video: Video input file cannot be read.") << endmsg;
 626           ::g_unlink (insnd.c_str());
 627           Gtk::Dialog::response(RESPONSE_CANCEL);
 628           return;
 629         }
 630
 631         std::string preset = preset_combo.get_active_text();
 632         TranscodeFfmpeg::FFSettings ffs ; /* = transcoder->default_encoder_settings(); */
 633         ffs.clear();
 634
 635         if (fps_checkbox.get_active()) {
 636                 ffs["-r"] = fps_combo.get_active_text();
 637                 transcoder->set_fps(atof(fps_combo.get_active_text()));
 638         }
 639
 640         if (scale_checkbox.get_active()) {
 641                 ffs["-s"] = string_compose("%1x%2", width_spinner.get_value(), height_spinner.get_value());
 642         }
 643
 644         if (video_codec_combo.get_active_text() != _("(default for format)")) {
 645                 ffs["-vcodec"] = video_codec_combo.get_active_text();
 646         }
 647         if (audio_codec_combo.get_active_text() != _("(default for format)")) {
 648                 ffs["-acodec"] = audio_codec_combo.get_active_text();
 649         }
 650
 651         if (video_bitrate_combo.get_active_text() == _("(default)") ) {
 652                 ;
 653         }
 654         else if (video_bitrate_combo.get_active_text() == _("(retain)") ) {
 655                 ffs["-qscale"]  = "0";
 656         } else {
 657                 ffs["-b:v"]  = video_bitrate_combo.get_active_text();
 658         }
 659
 660         if (audio_bitrate_combo.get_active_text() != _("(default)") ) {
 661                 ffs["-b:a"] = audio_bitrate_combo.get_active_text();
 662         }
 663
 664         if (audio_codec_combo.get_active_text() == "aac" ) {
 665                 ffs["-strict"] = "-2";
 666         }
 667
 668         if (video_codec_combo.get_active_text() == "h264" ) {
 669                 ffs["-vcodec"] = "libx264";
 670         }
 671         else if (video_codec_combo.get_active_text() == "vpx (webm)" ) {
 672                 ffs["-vcodec"] = "libvpx";
 673                 ffs["-g"] = "120";
 674                 ffs["-qmin"] = "11";
 675                 ffs["-qmax"] = "51";
 676         }
 677
 678         if (optimizations_checkbox.get_active()) {
 679           if (video_codec_combo.get_active_text() == "mpeg2video") {
 680                         ffs["-mbd"] = "rd";
 681                         ffs["-trellis"] = "2";
 682                         ffs["-cmp"] = "2";
 683                         ffs["-subcmp"] = "2";
 684                 }
 685                 else if (video_codec_combo.get_active_text() == "mpeg4") {
 686                         ffs["-mbd"] = "rd";
 687                         ffs["-flags"] = "+mv4+aic";
 688                         ffs["-trellis"] = "2";
 689                         ffs["-cmp"] = "2";
 690                         ffs["-subcmp"] = "2";
 691                         ffs["-g"] = "300";
 692                 }
 693                 else if (video_codec_combo.get_active_text() == "flv") {
 694                         ffs["-mbd"] = "2";
 695                         ffs["-cmp"] = "2";
 696                         ffs["-subcmp"] = "2";
 697                         ffs["-trellis"] = "2";
 698                         ffs["-flags"] = "+aic+mv0+mv4";
 699                         ffs["-g"] = "160";
 700                 }
 701         }
 702
 703         if (bframes_checkbox.get_active() && (
 704                    video_codec_combo.get_active_text() == "mpeg2video"
 705                 || video_codec_combo.get_active_text() == "mpeg4"
 706                 )) {
 707                 ffs["-bf"] = "2";
 708         }
 709
 710         if (preset == "dvd-PAL") {
 711                 ffs.clear(); /* ignore all prev settings */
 712                 ffs["-target"] = "pal-dvd";
 713                 ffs["-aspect"] = "4:3"; /* required for DVD - may be overridden below */
 714         }
 715         else if (preset == "dvd-NTSC") {
 716                 ffs.clear(); /* ignore all prev settings */
 717                 ffs["-target"] = "ntsc-dvd";
 718                 ffs["-aspect"] = "4:3"; /* required for DVD - may be overridden below */
 719         }
 720
 721         if (aspect_checkbox.get_active()) {
 722                 ffs["-aspect"] = aspect_combo.get_active_text();
 723         }
 724         if (deinterlace_checkbox.get_active()) {
 725                 ffs["-deinterlace"] = "-y"; // we use '-y' as dummy parameter for non key/value options
 726         }
 727
 728         bool map = true;
 729         if (pass == 1 && twopass) {
 730                 pbar.set_text (_("Encoding Video.. Pass 1/2"));
 731                 map = false;
 732                 ffs["-pass"] = "1";
 733                 ffs["-an"] = "-y";
 734                 ffs["-passlogfile"] =  Glib::path_get_dirname (outfn) + G_DIR_SEPARATOR + "ffmpeg2pass";
 735                 ffs["-f"] = get_file_extension(invid).empty()?"mov":get_file_extension(invid);
 736 #ifdef PLATFORM_WINDOWS
 737                 outfn = "NUL";
 738 #else
 739                 outfn = "/dev/null";
 740 #endif
 741         } else if (pass == 2) {
 742                 pbar.set_text (_("Encoding Video.. Pass 2/2"));
 743                 ffs["-pass"] = "2";
 744                 ffs["-passlogfile"] =  Glib::path_get_dirname (outfn) + G_DIR_SEPARATOR + "ffmpeg2pass";
 745         }
 746
 747         frameoffset_t av_offset = ARDOUR_UI::instance()->video_timeline->get_offset();
 748         double duration_s  = 0;
 749
 750         if (insnd_combo.get_active_row_number() == 0) {
 751                 /* session start to session end */
 752                 framecnt_t duration_f = _session->current_end_frame() - _session->current_start_frame();
 753                 duration_s = (double)duration_f / (double)_session->nominal_frame_rate();
 754         } else if (insnd_combo.get_active_row_number() == 2) {
 755                 /* selected range */
 756                 duration_s = export_range.length() / (double)_session->nominal_frame_rate();
 757         } else {
 758                 /* video start to end */
 759                 framecnt_t duration_f = ARDOUR_UI::instance()->video_timeline->get_duration();
 760                 if (av_offset < 0 ) {
 761                         duration_f += av_offset;
 762                 }
 763                 duration_s = (double)duration_f / (double)_session->nominal_frame_rate();
 764         }
 765
 766         std::ostringstream osstream; osstream << duration_s;
 767         ffs["-t"] = osstream.str();
 768         transcoder->set_duration(duration_s * transcoder->get_fps());
 769
 770         if (insnd_combo.get_active_row_number() == 0 || insnd_combo.get_active_row_number() == 2) {
 771                 framepos_t start, snend;
 772                 const frameoffset_t vid_duration = ARDOUR_UI::instance()->video_timeline->get_duration();
 773                 if (insnd_combo.get_active_row_number() == 0) {
 774                         start = _session->current_start_frame();
 775                         snend = _session->current_end_frame();
 776                 } else {
 777                         start = export_range.start();
 778                         snend = export_range.end_frame();
 779                 }
 780
 781 #if 0 /* DEBUG */
 782                 printf("AV offset: %lld Vid-len: %lld Vid-end: %lld || start:%lld || end:%lld\n",
 783                                 av_offset, vid_duration, av_offset+vid_duration, start, snend); // XXX
 784 #endif
 785
 786                 if (av_offset > start && av_offset + vid_duration < snend) {
 787                         transcoder->set_leadinout((av_offset - start) / (double)_session->nominal_frame_rate(),
 788                                 (snend - (av_offset + vid_duration)) / (double)_session->nominal_frame_rate());
 789                 } else if (av_offset > start) {
 790                         transcoder->set_leadinout((av_offset - start) / (double)_session->nominal_frame_rate(), 0);
 791                 } else if (av_offset + vid_duration < snend) {
 792                         transcoder->set_leadinout(0, (snend - (av_offset + vid_duration)) / (double)_session->nominal_frame_rate());
 793                         transcoder->set_avoffset((av_offset - start) / (double)_session->nominal_frame_rate());
 794                 }
 795 #if 0
 796                 else if (start > av_offset) {
 797                         std::ostringstream osstream; osstream << ((start - av_offset) / (double)_session->nominal_frame_rate());
 798                         ffs["-ss"] = osstream.str();
 799                 }
 800 #endif
 801                 else {
 802                         transcoder->set_avoffset((av_offset - start) / (double)_session->nominal_frame_rate());
 803                 }
 804
 805         } else if (av_offset < 0) {
 806                 /* from 00:00:00:00 to video-end */
 807                 transcoder->set_avoffset(av_offset / (double)_session->nominal_frame_rate());
 808         }
 809
 810         TranscodeFfmpeg::FFSettings meta = transcoder->default_meta_data();
 811         if (meta_checkbox.get_active()) {
 812                 ARDOUR::SessionMetadata * session_data = ARDOUR::SessionMetadata::Metadata();
 813                 if (session_data->year() > 0 ) {
 814                         std::ostringstream osstream; osstream << session_data->year();
 815                         meta["year"] = osstream.str();
 816                 }
 817                 if (session_data->track_number() > 0 ) {
 818                         std::ostringstream osstream; osstream << session_data->track_number();
 819                         meta["track"] = osstream.str();
 820                 }
 821                 if (session_data->disc_number() > 0 ) {
 822                         std::ostringstream osstream; osstream << session_data->disc_number();
 823                         meta["disc"] = osstream.str();
 824                 }
 825                 if (!session_data->title().empty())     {meta["title"] = session_data->title();}
 826                 if (!session_data->artist().empty())    {meta["author"] = session_data->artist();}
 827                 if (!session_data->album_artist().empty()) {meta["album_artist"] = session_data->album_artist();}
 828                 if (!session_data->album().empty())     {meta["album"] = session_data->album();}
 829                 if (!session_data->genre().empty())     {meta["genre"] = session_data->genre();}
 830                 if (!session_data->composer().empty())  {meta["composer"] = session_data->composer();}
 831                 if (!session_data->comment().empty())   {meta["comment"] = session_data->comment();}
 832                 if (!session_data->copyright().empty()) {meta["copyright"] = session_data->copyright();}
 833                 if (!session_data->subtitle().empty())  {meta["description"] = session_data->subtitle();}
 834         }
 835
 836 #if 1 /* tentative debug mode */
 837         if (debug_checkbox.get_active()) {
 838                 transcoder->set_debug(true);
 839         }
 840 #endif
 841
 842         transcoder->Progress.connect(*this, invalidator (*this), boost::bind (&ExportVideoDialog::update_progress , this, _1, _2), gui_context());
 843         transcoder->Finished.connect(*this, invalidator (*this), boost::bind (&ExportVideoDialog::finished, this), gui_context());
 844         if (!transcoder->encode(outfn, insnd, invid, ffs, meta, map)) {
 845                 ARDOUR_UI::instance()->popup_error(_("Transcoding failed."));
 846                 Gtk::Dialog::response(RESPONSE_CANCEL);
 847                 return;
 848         }
 849 }
 850
 851 void
 852 ExportVideoDialog::change_file_extension (std::string ext)
 853 {
 854         outfn_path_entry.set_text (
 855                 strip_file_extension(outfn_path_entry.get_text()) + ext
 856         );
 857 }
 858
 859 void
 860 ExportVideoDialog::scale_checkbox_toggled ()
 861 {
 862         width_spinner.set_sensitive(scale_checkbox.get_active());
 863         height_spinner.set_sensitive(scale_checkbox.get_active());
 864 }
 865
 866 void
 867 ExportVideoDialog::fps_checkbox_toggled ()
 868 {
 869         fps_combo.set_sensitive(fps_checkbox.get_active());
 870 }
 871
 872 void
 873 ExportVideoDialog::aspect_checkbox_toggled ()
 874 {
 875         aspect_combo.set_sensitive(aspect_checkbox.get_active());
 876 }
 877
 878 void
 879 ExportVideoDialog::video_codec_combo_changed ()
 880 {
 881         if ((  video_codec_combo.get_active_text() == "mpeg4"
 882              ||video_codec_combo.get_active_text() == "mpeg2video"
 883                         ) && !(
 884                preset_combo.get_active_text() == "dvd-PAL"
 885              ||preset_combo.get_active_text() == "dvd-NTSC"
 886            )) {
 887                 bframes_checkbox.set_sensitive(true);
 888                 optimizations_checkbox.set_sensitive(true);
 889                 if (video_codec_combo.get_active_text() == "mpeg2video") {
 890                         optimizations_label.set_text("-mbd rd -trellis 2 -cmp 2 -subcmp 2"); // mpeg2
 891                 } else if (video_codec_combo.get_active_text() == "mpeg4") {
 892                         optimizations_label.set_text("-mbd rd -flags +mv4+aic -trellis 2 -cmp 2 -subcmp 2 -g 300"); // mpeg4
 893                 } else {
 894                         optimizations_label.set_text("-mbd 2 -cmp 2 -subcmp 2 -trellis 2 -flags +aic+mv0+mv4 -g 160"); // flv
 895                 }
 896         } else {
 897                 bframes_checkbox.set_sensitive(false);
 898                 bframes_checkbox.set_active(false);
 899                 optimizations_checkbox.set_sensitive(false);
 900                 optimizations_checkbox.set_active(false);
 901                 optimizations_label.set_text("-");
 902         }
 903 }
 904
 905 void
 906 ExportVideoDialog::preset_combo_changed ()
 907 {
 908         std::string p = preset_combo.get_active_text();
 909         scale_checkbox.set_sensitive(true);
 910
 911         if (p == "flv") {
 912                 change_file_extension(".flv");
 913                 audio_codec_combo.set_active(1);
 914                 video_codec_combo.set_active(0);
 915                 audio_bitrate_combo.set_active(1);
 916                 video_bitrate_combo.set_active(1);
 917                 audio_samplerate_combo.set_active(1);
 918         }
 919         else if (p == "you-tube") {
 920                 change_file_extension(".avi");
 921                 audio_codec_combo.set_active(2);
 922                 video_codec_combo.set_active(5);
 923                 audio_bitrate_combo.set_active(1);
 924                 video_bitrate_combo.set_active(2);
 925                 if (_session->nominal_frame_rate() == 48000 || _session->nominal_frame_rate() == 96000) {
 926                         audio_samplerate_combo.set_active(2);
 927                 } else {
 928                         audio_samplerate_combo.set_active(1);
 929                 }
 930         }
 931         else if (p == "ogg") {
 932                 change_file_extension(".ogv");
 933                 audio_codec_combo.set_active(3);
 934                 video_codec_combo.set_active(1);
 935                 audio_bitrate_combo.set_active(2);
 936                 video_bitrate_combo.set_active(2);
 937                 if (_session->nominal_frame_rate() == 48000 || _session->nominal_frame_rate() == 96000) {
 938                         audio_samplerate_combo.set_active(2);
 939                 } else {
 940                         audio_samplerate_combo.set_active(1);
 941                 }
 942         }
 943         else if (p == "dvd-mp2") {
 944                 change_file_extension(".mpg");
 945                 audio_codec_combo.set_active(4);
 946                 video_codec_combo.set_active(3);
 947                 audio_bitrate_combo.set_active(3);
 948                 video_bitrate_combo.set_active(3);
 949                 audio_samplerate_combo.set_active(2);
 950         }
 951         else if (p == "dvd-NTSC" || p == "dvd-PAL") {
 952                 change_file_extension(".mpg");
 953                 audio_codec_combo.set_active(5);
 954                 video_codec_combo.set_active(3);
 955                 audio_bitrate_combo.set_active(3);
 956                 video_bitrate_combo.set_active(3);
 957                 audio_samplerate_combo.set_active(2);
 958
 959                 scale_checkbox.set_active(false);
 960                 scale_checkbox.set_sensitive(false);
 961         }
 962         else if (p == "mpeg4") {
 963                 change_file_extension(".mp4");
 964                 audio_codec_combo.set_active(0);
 965                 video_codec_combo.set_active(4);
 966                 audio_bitrate_combo.set_active(3);
 967                 video_bitrate_combo.set_active(3);
 968                 if (_session->nominal_frame_rate() == 48000 || _session->nominal_frame_rate() == 96000) {
 969                         audio_samplerate_combo.set_active(2);
 970                 } else {
 971                         audio_samplerate_combo.set_active(1);
 972                 }
 973         }
 974
 975         if (p == "none") {
 976                 audio_codec_combo.set_sensitive(true);
 977                 video_codec_combo.set_sensitive(true);
 978                 audio_bitrate_combo.set_sensitive(true);
 979                 video_bitrate_combo.set_sensitive(true);
 980                 audio_samplerate_combo.set_sensitive(true);
 981         } else {
 982                 audio_codec_combo.set_sensitive(false);
 983                 video_codec_combo.set_sensitive(false);
 984                 audio_bitrate_combo.set_sensitive(false);
 985                 video_bitrate_combo.set_sensitive(false);
 986                 audio_samplerate_combo.set_sensitive(false);
 987         }
 988
 989         Gtk::Table *t = (Gtk::Table*) preset_combo.get_parent();
 990         Gtk::Table_Helpers::TableList c = t->children();
 991         Gtk::Table_Helpers::TableList::iterator it;
 992         if (p == "dvd-PAL" || p == "dvd-NTSC") {
 993                 for (it = c.begin(); it != c.end(); ++it) {
 994                         int row = it->get_top_attach();
 995                         if (row == 2 || row == 3 || row== 5 || row== 6 || row == 9) {
 996                                 it->get_widget()->hide();
 997                         }
 998                 }
 999         } else {
1000                 for (it = c.begin(); it != c.end(); ++it) {
1001                         int row = it->get_top_attach();
1002                         if (row == 2 || row == 3 || row== 5 || row== 6 || row == 9) {
1003                                 it->get_widget()->show();
1004                         }
1005                 }
1006         }
1007
1008         video_codec_combo_changed();
1009 }
1010
1011 void
1012 ExportVideoDialog::open_outfn_dialog ()
1013 {
1014         Gtk::FileChooserDialog dialog(_("Save Exported Video File"), Gtk::FILE_CHOOSER_ACTION_SAVE);
1015         dialog.set_filename (outfn_path_entry.get_text());
1016
1017         dialog.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
1018         dialog.add_button(Gtk::Stock::OK, Gtk::RESPONSE_OK);
1019
1020         int result = dialog.run();
1021
1022         if (result == Gtk::RESPONSE_OK) {
1023                 std::string filename = dialog.get_filename();
1024
1025                 if (filename.length()) {
1026                         outfn_path_entry.set_text (filename);
1027                 }
1028         }
1029 }
1030
1031 void
1032 ExportVideoDialog::open_invid_dialog ()
1033 {
1034         Gtk::FileChooserDialog dialog(_("Save Exported Video File"), Gtk::FILE_CHOOSER_ACTION_SAVE);
1035         dialog.set_filename (invid_path_entry.get_text());
1036
1037         dialog.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
1038         dialog.add_button(Gtk::Stock::OK, Gtk::RESPONSE_OK);
1039
1040         int result = dialog.run();
1041
1042         if (result == Gtk::RESPONSE_OK) {
1043                 std::string filename = dialog.get_filename();
1044
1045                 if (filename.length()) {
1046                         invid_path_entry.set_text (filename);
1047                 }
1048         }
1049 }