gtk2_ardour/transcode_ffmpeg.cc

   1 /*
   2     Copyright (C) 2010-2013 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 <stdio.h>
  21 #include <string.h>
  22 #include <sstream>
  23 #include <sys/types.h>
  24
  25 #include "pbd/error.h"
  26 #include "pbd/convert.h"
  27 #include "pbd/file_utils.h"
  28 #include "gui_thread.h"
  29
  30 #include "transcode_ffmpeg.h"
  31 #include "utils_videotl.h"
  32
  33 #include "i18n.h"
  34
  35 #ifdef SearchPath
  36 #undef SearchPath
  37 #endif
  38
  39 using namespace PBD;
  40 using namespace VideoUtils;
  41
  42 TranscodeFfmpeg::TranscodeFfmpeg (std::string f)
  43         : infile(f)
  44 {
  45         probeok = false;
  46         ffexecok = false;
  47         ffmpeg_exe = "";
  48         ffprobe_exe = "";
  49         m_duration = 0;
  50         m_avoffset = m_lead_in = m_lead_out = 0;
  51         m_width = m_height = 0;
  52         m_aspect = m_fps = 0;
  53 #if 1 /* tentative debug mode */
  54         debug_enable = false;
  55 #endif
  56
  57         std::string ff_file_path;
  58         if (find_file_in_search_path (SearchPath(Glib::getenv("PATH")), X_("ffmpeg_harvid"), ff_file_path)) { ffmpeg_exe = ff_file_path; }
  59         else if (Glib::file_test(X_("C:\\Program Files\\harvid\\ffmpeg.exe"), Glib::FILE_TEST_EXISTS)) {
  60                 ffmpeg_exe = X_("C:\\Program Files\\ffmpeg\\ffmpeg.exe");
  61         }
  62         else if (Glib::file_test(X_("C:\\Program Files\\ffmpeg\\ffmpeg.exe"), Glib::FILE_TEST_EXISTS)) {
  63                 ffmpeg_exe = X_("C:\\Program Files\\ffmpeg\\ffmpeg.exe");
  64         }
  65
  66         if (find_file_in_search_path (SearchPath(Glib::getenv("PATH")), X_("ffprobe_harvid"), ff_file_path)) { ffprobe_exe = ff_file_path; }
  67         else if (Glib::file_test(X_("C:\\Program Files\\harvid\\ffprobe.exe"), Glib::FILE_TEST_EXISTS)) {
  68                 ffprobe_exe = X_("C:\\Program Files\\ffmpeg\\ffprobe.exe");
  69         }
  70         else if (Glib::file_test(X_("C:\\Program Files\\ffmpeg\\ffprobe.exe"), Glib::FILE_TEST_EXISTS)) {
  71                 ffprobe_exe = X_("C:\\Program Files\\ffmpeg\\ffprobe.exe");
  72         }
  73
  74         if (ffmpeg_exe.empty() || ffprobe_exe.empty()) {
  75                 warning << string_compose(
  76                                 _(
  77                                 "No ffprobe or ffmpeg executables could be found on this system.\n"
  78                                 "Video import and export is not possible until you install those tools.\n"
  79                                 "%1 requires ffmpeg and ffprobe from ffmpeg.org - version 1.1 or newer.\n"
  80                                 "\n"
  81                                 "The tools are included with the %1 releases from ardour.org "
  82                                 "and also available with the video-server at http://x42.github.com/harvid/\n"
  83                                 "\n"
  84                                 "Important: the files need to be installed in $PATH and named ffmpeg_harvid and ffprobe_harvid.\n"
  85                                 "If you already have a suitable ffmpeg installation on your system, we recommend creating "
  86                                 "symbolic links from ffmpeg to ffmpeg_harvid and from ffprobe to ffprobe_harvid.\n"
  87                                 ), PROGRAM_NAME) << endmsg;
  88                 return;
  89         }
  90         ffexecok = true;
  91
  92         if (infile.empty() || !probe()) {
  93                 return;
  94         }
  95         probeok = true;
  96 }
  97
  98 TranscodeFfmpeg::~TranscodeFfmpeg ()
  99 {
 100   ;
 101 }
 102
 103 bool
 104 TranscodeFfmpeg::probe ()
 105 {
 106         ffoutput = "";
 107         char **argp;
 108         argp=(char**) calloc(7,sizeof(char*));
 109         argp[0] = strdup(ffprobe_exe.c_str());
 110         argp[1] = strdup("-print_format");
 111         argp[2] = strdup("csv=nk=0");
 112         argp[3] = strdup("-show_format");
 113         argp[4] = strdup("-show_streams");
 114         argp[5] = strdup(infile.c_str());
 115         argp[6] = 0;
 116         ffcmd = new SystemExec(ffprobe_exe, argp);
 117         ffcmd->ReadStdout.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffprobeparse, this, _1 ,_2));
 118         ffcmd->Terminated.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffexit, this));
 119         if (ffcmd->start(1)) {
 120                 ffexit();
 121                 return false;
 122         }
 123
 124         /* wait for ffprobe process to exit */
 125         ffcmd->wait();
 126
 127         /* wait for interposer thread to copy all data.
 128          * SystemExec::Terminated is emitted and ffcmd set to NULL */
 129         int timeout = 300; // 1.5 sec
 130         while (ffcmd && --timeout > 0) {
 131                 Glib::usleep(5000);
 132         }
 133         if (timeout == 0 || ffoutput.empty()) {
 134                 return false;
 135         }
 136
 137         /* parse */
 138
 139         std::vector<std::vector<std::string> > lines;
 140         ParseCSV(ffoutput, lines);
 141         double timebase = 0;
 142         m_width = m_height = 0;
 143         m_fps = m_aspect = 0;
 144         m_duration = 0;
 145         m_codec.clear();
 146         m_audio.clear();
 147
 148 #define PARSE_FRACTIONAL_FPS(VAR) \
 149         { \
 150                 std::string::size_type pos; \
 151                 VAR = atof(value); \
 152                 pos = value.find_first_of('/'); \
 153                 if (pos != std::string::npos) { \
 154                         VAR = atof(value.substr(0, pos)) / atof(value.substr(pos+1)); \
 155                 } \
 156         }
 157
 158         for (std::vector<std::vector<std::string> >::iterator i = lines.begin(); i != lines.end(); ++i) {
 159                 if (i->at(0) == X_("format")) {
 160                         /* format,filename,#streams,format-name,format-long-name,start-time,duration,size,bitrate */
 161                 } else
 162                 if (i->at(0) == X_("stream")) {
 163                         if (i->at(5) == X_("codec_type=video") && m_width == 0) {
 164
 165                                 for (std::vector<std::string>::iterator kv = i->begin(); kv != i->end(); ++kv) {
 166                                         const size_t kvsep = kv->find('=');
 167                                         if(kvsep == std::string::npos) continue;
 168                                         std::string key = kv->substr(0, kvsep);
 169                                         std::string value = kv->substr(kvsep + 1);
 170
 171                                         if (key == X_("index")) {
 172                                                 m_videoidx = atoi(value);
 173                                         } else if (key == X_("width")) {
 174                                                 m_width = atoi(value);
 175                                         } else if (key == X_("height")) {
 176                                                 m_height = atoi(value);
 177                                         } else if (key == X_("codec_name")) {
 178                                                 if (!m_codec.empty()) m_codec += " ";
 179                                                 m_codec += value;
 180                                         } else if (key == X_("codec_long_name")) {
 181                                                 if (!m_codec.empty()) m_codec += " ";
 182                                                 m_codec += "[" + value + "]";
 183                                         } else if (key == X_("codec_tag_string")) {
 184                                                 if (!m_codec.empty()) m_codec += " ";
 185                                                 m_codec += "(" + value + ")";
 186                                         } else if (key == X_("r_frame_rate")) {
 187                                                 PARSE_FRACTIONAL_FPS(m_fps)
 188                                         } else if (key == X_("avg_frame_rate") && m_fps == 0) {
 189                                                 PARSE_FRACTIONAL_FPS(m_fps)
 190                                         } else if (key == X_("time_base")) {
 191                                                 PARSE_FRACTIONAL_FPS(timebase)
 192                                         } else if (key == X_("timecode") && m_duration == 0) {
 193                                                 int h,m,s; char f[7];
 194                                                 if (sscanf(i->at(16).c_str(), "%d:%d:%d:%s",&h,&m,&s,f) == 4) {
 195                                                         m_duration = (ARDOUR::framecnt_t) floor(m_fps * (
 196                                                                         h * 3600.0
 197                                                                 + m * 60.0
 198                                                                 + s * 1.0
 199                                                                 + atoi(f) / pow(10, strlen(f))
 200                                                         ));
 201                                                 }
 202                                         } else if (key == X_("duration_ts") && m_fps == 0 && timebase !=0 ) {
 203                                                 m_duration = atof(value) * m_fps * timebase;
 204                                         } else if (key == X_("duration") && m_fps != 0 && m_duration == 0) {
 205                                                 m_duration = atof(value) * m_fps;
 206                                         } else if (key == X_("display_aspect_ratio")) {
 207                                                 std::string::size_type pos;
 208                                                 pos = value.find_first_of(':');
 209                                                 if (pos != std::string::npos && atof(value.substr(pos+1)) != 0) {
 210                                                         m_aspect = atof(value.substr(0, pos)) / atof(value.substr(pos+1));
 211                                                 }
 212                                         }
 213                                 }
 214
 215                                 if (m_aspect == 0) {
 216                                         m_aspect = (double)m_width / (double)m_height;
 217                                 }
 218
 219                         } else if (i->at(5) == X_("codec_type=audio")) { /* new ffprobe */
 220                                 FFAudioStream as;
 221                                 for (std::vector<std::string>::iterator kv = i->begin(); kv != i->end(); ++kv) {
 222                                         const size_t kvsep = kv->find('=');
 223                                         if(kvsep == std::string::npos) continue;
 224                                         std::string key = kv->substr(0, kvsep);
 225                                         std::string value = kv->substr(kvsep + 1);
 226
 227                                         if (key == X_("channels")) {
 228                                                 as.channels   = atoi(value);
 229                                         } else if (key == X_("index")) {
 230                                                 as.stream_id  = value;
 231                                         } else if (key == X_("codec_long_name")) {
 232                                                 if (!as.name.empty()) as.name += " ";
 233                                                 as.name += value;
 234                                         } else if (key == X_("codec_name")) {
 235                                                 if (!as.name.empty()) as.name += " ";
 236                                                 as.name += value;
 237                                         } else if (key == X_("sample_fmt")) {
 238                                                 if (!as.name.empty()) as.name += " ";
 239                                                 as.name += "FMT:" + value;
 240                                         } else if (key == X_("sample_rate")) {
 241                                                 if (!as.name.empty()) as.name += " ";
 242                                                 as.name += "SR:" + value;
 243                                         }
 244
 245                                 }
 246                                 m_audio.push_back(as);
 247                         }
 248                 }
 249         }
 250         /* end parse */
 251
 252 #if 0 /* DEBUG */
 253         printf("FPS: %f\n", m_fps);
 254         printf("Duration: %lu frames\n",(unsigned long)m_duration);
 255         printf("W/H: %ix%i\n",m_width, m_height);
 256         printf("aspect: %f\n",m_aspect);
 257         printf("codec: %s\n",m_codec.c_str());
 258         if (m_audio.size() > 0) {
 259                 for (AudioStreams::iterator it = m_audio.begin(); it < m_audio.end(); ++it) {
 260                         printf("audio: %s - %i channels\n",(*it).stream_id.c_str(), (*it).channels);
 261                 }
 262         } else {
 263           printf("audio: no audio streams in file.\n");
 264         }
 265 #endif
 266
 267         return true;
 268 }
 269
 270 TranscodeFfmpeg::FFSettings
 271 TranscodeFfmpeg::default_encoder_settings ()
 272 {
 273         TranscodeFfmpeg::FFSettings ffs;
 274         ffs.clear();
 275         ffs["-vcodec"] = "mpeg4";
 276         ffs["-acodec"] = "ac3";
 277         ffs["-b:v"] = "5000k";
 278         ffs["-b:a"] = "160k";
 279         return ffs;
 280 }
 281
 282 TranscodeFfmpeg::FFSettings
 283 TranscodeFfmpeg::default_meta_data ()
 284 {
 285         TranscodeFfmpeg::FFSettings ffm;
 286         ffm.clear();
 287         ffm["comment"] = "Created with ardour";
 288         return ffm;
 289 }
 290
 291 char *
 292 TranscodeFfmpeg::format_metadata (std::string key, std::string value)
 293 {
 294         size_t start_pos = 0;
 295         std::string v1 = value;
 296         while((start_pos = v1.find_first_not_of(
 297                         "abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789(),.\"'",
 298                         start_pos)) != std::string::npos)
 299         {
 300                 v1.replace(start_pos, 1, "_");
 301                 start_pos += 1;
 302         }
 303
 304         start_pos = 0;
 305         while((start_pos = v1.find("\"", start_pos)) != std::string::npos) {
 306                 v1.replace(start_pos, 1, "\\\"");
 307                 start_pos += 2;
 308         }
 309
 310         size_t len = key.length() + v1.length() + 4;
 311         char *mds = (char*) calloc(len, sizeof(char));
 312         snprintf(mds, len, "%s=\"%s\"", key.c_str(), v1.c_str());
 313         return mds;
 314 }
 315
 316 bool
 317 TranscodeFfmpeg::encode (std::string outfile, std::string inf_a, std::string inf_v, TranscodeFfmpeg::FFSettings ffs, TranscodeFfmpeg::FFSettings meta, bool map)
 318 {
 319 #define MAX_FFMPEG_ENCODER_ARGS (100)
 320         char **argp;
 321         int a=0;
 322
 323         argp=(char**) calloc(MAX_FFMPEG_ENCODER_ARGS,sizeof(char*));
 324         argp[a++] = strdup(ffmpeg_exe.c_str());
 325         if (m_avoffset < 0 || m_avoffset > 0) {
 326                 std::ostringstream osstream; osstream << m_avoffset;
 327                 argp[a++] = strdup("-itsoffset");
 328                 argp[a++] = strdup(osstream.str().c_str());
 329         }
 330         argp[a++] = strdup("-i");
 331         argp[a++] = strdup(inf_v.c_str());
 332
 333         argp[a++] = strdup("-i");
 334         argp[a++] = strdup(inf_a.c_str());
 335
 336         for(TranscodeFfmpeg::FFSettings::const_iterator it = ffs.begin(); it != ffs.end(); ++it) {
 337                 argp[a++] = strdup(it->first.c_str());
 338                 argp[a++] = strdup(it->second.c_str());
 339         }
 340         for(TranscodeFfmpeg::FFSettings::const_iterator it = meta.begin(); it != meta.end(); ++it) {
 341                 argp[a++] = strdup("-metadata");
 342                 argp[a++] = format_metadata(it->first.c_str(), it->second.c_str());
 343         }
 344         if (m_lead_in != 0 && m_lead_out != 0) {
 345                 std::ostringstream osstream;
 346                 argp[a++] = strdup("-vf");
 347                 osstream << X_("color=c=black:s=") << m_width << X_("x") << m_height << X_(":d=") << m_lead_in << X_(" [pre]; ");
 348                 osstream << X_("color=c=black:s=") << m_width << X_("x") << m_height << X_(":d=") << m_lead_out << X_(" [post]; ");
 349                 osstream << X_("[pre] [in] [post] concat=n=3");
 350                 argp[a++] = strdup(osstream.str().c_str());
 351         } else if (m_lead_in != 0) {
 352                 std::ostringstream osstream;
 353                 argp[a++] = strdup("-vf");
 354                 osstream << X_("color=c=black:s=") << m_width << X_("x") << m_height << X_(":d=") << m_lead_in << X_(" [pre]; ");
 355                 osstream << X_("[pre] [in] concat=n=2");
 356                 argp[a++] = strdup(osstream.str().c_str());
 357         } else if (m_lead_out != 0) {
 358                 std::ostringstream osstream;
 359                 argp[a++] = strdup("-vf");
 360                 osstream << X_("color=c=black:s=") << m_width << X_("x") << m_height << X_(":d=") << m_lead_out << X_(" [post]; ");
 361                 osstream << X_("[in] [post] concat=n=2");
 362                 argp[a++] = strdup(osstream.str().c_str());
 363         }
 364
 365         if (map) {
 366                 std::ostringstream osstream;
 367                 argp[a++] = strdup("-map");
 368                 osstream << X_("0:") << m_videoidx;
 369                 argp[a++] = strdup(osstream.str().c_str());
 370                 argp[a++] = strdup("-map");
 371                 argp[a++] = strdup("1:0");
 372         }
 373
 374         argp[a++] = strdup("-y");
 375         argp[a++] = strdup(outfile.c_str());
 376         argp[a] = (char *)0;
 377         assert(a<MAX_FFMPEG_ENCODER_ARGS);
 378         /* Note: these are free()d in ~SystemExec */
 379 #if 1 /* DEBUG */
 380         if (debug_enable) { /* tentative debug mode */
 381         printf("EXPORT ENCODE:\n");
 382         for (int i=0; i< a; ++i) {
 383           printf("%s ", argp[i]);
 384         }
 385         printf("\n");
 386         }
 387 #endif
 388
 389         ffcmd = new SystemExec(ffmpeg_exe, argp);
 390         ffcmd->ReadStdout.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffmpegparse_v, this, _1 ,_2));
 391         ffcmd->Terminated.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffexit, this));
 392         if (ffcmd->start(2)) {
 393                 ffexit();
 394                 return false;
 395         }
 396         return true;
 397 }
 398
 399 bool
 400 TranscodeFfmpeg::extract_audio (std::string outfile, ARDOUR::framecnt_t /*samplerate*/, unsigned int stream)
 401 {
 402         if (!probeok) return false;
 403   if (stream >= m_audio.size()) return false;
 404
 405         char **argp;
 406         int i = 0;
 407
 408         argp=(char**) calloc(15,sizeof(char*));
 409         argp[i++] = strdup(ffmpeg_exe.c_str());
 410         argp[i++] = strdup("-i");
 411         argp[i++] = strdup(infile.c_str());
 412 #if 0 /* ffmpeg write original samplerate, use a3/SRC to resample */
 413         argp[i++] = strdup("-ar");
 414         argp[i] = (char*) calloc(7,sizeof(char)); snprintf(argp[i++], 7, "%"PRId64, samplerate);
 415 #endif
 416         argp[i++] = strdup("-ac");
 417         argp[i] = (char*) calloc(3,sizeof(char)); snprintf(argp[i++], 3, "%i", m_audio.at(stream).channels);
 418         argp[i++] = strdup("-map");
 419         argp[i] = (char*) calloc(8,sizeof(char)); snprintf(argp[i++], 8, "0:%s", m_audio.at(stream).stream_id.c_str());
 420         argp[i++] = strdup("-vn");
 421         argp[i++] = strdup("-acodec");
 422         argp[i++] = strdup("pcm_f32le");
 423         argp[i++] = strdup("-y");
 424         argp[i++] = strdup(outfile.c_str());
 425         argp[i++] = (char *)0;
 426         /* Note: argp is free()d in ~SystemExec */
 427 #if 1 /* DEBUG */
 428         if (debug_enable) { /* tentative debug mode */
 429         printf("EXTRACT AUDIO:\n");
 430         for (int i=0; i< 14; ++i) {
 431           printf("%s ", argp[i]);
 432         }
 433         printf("\n");
 434         }
 435 #endif
 436
 437         ffcmd = new SystemExec(ffmpeg_exe, argp);
 438         ffcmd->ReadStdout.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffmpegparse_a, this, _1 ,_2));
 439         ffcmd->Terminated.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffexit, this));
 440         if (ffcmd->start(2)) {
 441                 ffexit();
 442                 return false;
 443         }
 444         return true;
 445 }
 446
 447
 448 bool
 449 TranscodeFfmpeg::transcode (std::string outfile, const int outw, const int outh, const int kbitps)
 450 {
 451         if (!probeok) return false;
 452
 453         char **argp;
 454         int bitrate = kbitps;
 455         int width = outw;
 456         int height = outh;
 457
 458         if (width < 1 || width > m_width) { width = m_width; } /* don't allow upscaling */
 459         if (height < 1 || height > m_height) { height = floor(width / m_aspect); }
 460
 461         if (bitrate == 0) {
 462                 const double bitperpixel = .7; /* avg quality */
 463                 bitrate = floor(m_fps * width * height * bitperpixel / 10000.0);
 464         } else {
 465                 bitrate = bitrate / 10;
 466         }
 467         if (bitrate < 10)  bitrate = 10;
 468         if (bitrate > 1000) bitrate = 1000;
 469
 470         argp=(char**) calloc(16,sizeof(char*));
 471         argp[0] = strdup(ffmpeg_exe.c_str());
 472         argp[1] = strdup("-i");
 473         argp[2] = strdup(infile.c_str());
 474         argp[3] = strdup("-b:v");
 475         argp[4] = (char*) calloc(7,sizeof(char)); snprintf(argp[4], 7, "%i0k", bitrate);
 476         argp[5] = strdup("-s");
 477         argp[6] = (char*) calloc(10,sizeof(char)); snprintf(argp[6], 10, "%ix%i", width, height);
 478         argp[7] = strdup("-y");
 479         argp[8] = strdup("-vcodec");
 480         argp[9] = strdup("mjpeg");
 481         argp[10] = strdup("-an");
 482         argp[11] = strdup("-intra");
 483         argp[12] = strdup("-g");
 484         argp[13] = strdup("1");
 485         argp[14] = strdup(outfile.c_str());
 486         argp[15] = (char *)0;
 487         /* Note: these are free()d in ~SystemExec */
 488 #if 1 /* DEBUG */
 489         if (debug_enable) { /* tentative debug mode */
 490         printf("TRANSCODE VIDEO:\n");
 491         for (int i=0; i< 15; ++i) {
 492           printf("%s ", argp[i]);
 493         }
 494         printf("\n");
 495         }
 496 #endif
 497         ffcmd = new SystemExec(ffmpeg_exe, argp);
 498         ffcmd->ReadStdout.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffmpegparse_v, this, _1 ,_2));
 499         ffcmd->Terminated.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffexit, this));
 500         if (ffcmd->start(2)) {
 501                 ffexit();
 502                 return false;
 503         }
 504         return true;
 505 }
 506
 507 void
 508 TranscodeFfmpeg::cancel ()
 509 {
 510         if (!ffcmd || !ffcmd->is_running()) { return;}
 511         ffcmd->write_to_stdin("q");
 512 #ifdef WIN32
 513         Sleep(1000);
 514 #else
 515         sleep (1);
 516 #endif
 517         if (ffcmd) {
 518           ffcmd->terminate();
 519         }
 520 }
 521
 522 void
 523 TranscodeFfmpeg::ffexit ()
 524 {
 525         delete ffcmd;
 526         ffcmd=0;
 527         Finished(); /* EMIT SIGNAL */
 528 }
 529
 530 void
 531 TranscodeFfmpeg::ffprobeparse (std::string d, size_t /* s */)
 532 {
 533         ffoutput+=d;
 534 }
 535
 536 void
 537 TranscodeFfmpeg::ffmpegparse_a (std::string d, size_t /* s */)
 538 {
 539         const char *t;
 540         int h,m,s; char f[7];
 541         ARDOUR::framecnt_t p = -1;
 542
 543         if (!(t=strstr(d.c_str(), "time="))) { return; }
 544
 545         if (sscanf(t+5, "%d:%d:%d.%s",&h,&m,&s,f) == 4) {
 546                 p = (ARDOUR::framecnt_t) floor( 100.0 * (
 547                       h * 3600.0
 548                     + m * 60.0
 549                     + s * 1.0
 550                     + atoi(f) / pow(10, strlen(f))
 551                 ));
 552                 p = p * m_fps / 100.0;
 553                 if (p > m_duration ) { p = m_duration; }
 554                 Progress(p, m_duration); /* EMIT SIGNAL */
 555         } else {
 556                 Progress(0, 0); /* EMIT SIGNAL */
 557         }
 558 }
 559
 560 void
 561 TranscodeFfmpeg::ffmpegparse_v (std::string d, size_t /* s */)
 562 {
 563         if (strstr(d.c_str(), "ERROR") || strstr(d.c_str(), "Error") || strstr(d.c_str(), "error")) {
 564                 warning << "ffmpeg-error: " << d << endmsg;
 565         }
 566         if (strncmp(d.c_str(), "frame=",6)) {
 567 #if 1 /* DEBUG */
 568                 if (debug_enable) {
 569                         d.erase(d.find_last_not_of(" \t\r\n") + 1);
 570                   printf("ffmpeg: '%s'\n", d.c_str());
 571                 }
 572 #endif
 573                 Progress(0, 0); /* EMIT SIGNAL */
 574                 return;
 575         }
 576         ARDOUR::framecnt_t f = atol(d.substr(6));
 577         if (f == 0) {
 578                 Progress(0, 0); /* EMIT SIGNAL */
 579         } else {
 580                 Progress(f, m_duration); /* EMIT SIGNAL */
 581         }
 582 }