gtk2_ardour/transcode_ffmpeg.cc

   1 /*
   2  * Copyright (C) 2013-2014 Tim Mayberry <mojofunk@gmail.com>
   3  * Copyright (C) 2013-2017 Paul Davis <paul@linuxaudiosystems.com>
   4  * Copyright (C) 2013-2019 Robin Gareus <robin@gareus.org>
   5  * Copyright (C) 2013 John Emmas <john@creativepost.co.uk>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21 #include <stdio.h>
  22 #include <string.h>
  23 #include <sstream>
  24 #include <sys/types.h>
  25
  26 #include "pbd/error.h"
  27 #include "pbd/convert.h"
  28 #include "pbd/file_utils.h"
  29 #include "gui_thread.h"
  30
  31 #include "ardour/filesystem_paths.h"
  32
  33 #include "transcode_ffmpeg.h"
  34 #include "utils_videotl.h"
  35
  36 #include "pbd/i18n.h"
  37
  38 using namespace PBD;
  39 using namespace VideoUtils;
  40
  41 TranscodeFfmpeg::TranscodeFfmpeg (std::string f)
  42         : infile(f)
  43 {
  44         probeok = false;
  45         ffexecok = false;
  46         m_duration = 0;
  47         m_avoffset = m_lead_in = m_lead_out = 0;
  48         m_width = m_height = 0;
  49         m_aspect = m_fps = 0;
  50         m_sar = "";
  51 #if 1 /* tentative debug mode */
  52         debug_enable = false;
  53 #endif
  54
  55         if (!ARDOUR::ArdourVideoToolPaths::transcoder_exe(ffmpeg_exe, ffprobe_exe)) {
  56                 warning << string_compose(
  57                                 _(
  58                                         "ffmpeg installation was not found on this system.\n"
  59                                         "%1 requires ffmpeg and ffprobe from ffmpeg.org - version 1.1 or newer.\n"
  60                                         "Video import and export is not possible until you install tools.\n"
  61                                         "\n"
  62                                         "The tools are included with the %1 releases from ardour.org "
  63                                         "and also available with the video-server at http://x42.github.com/harvid/\n"
  64                                         "\n"
  65                                         "Important: the files need to be installed in $PATH and named ffmpeg_harvid and ffprobe_harvid.\n"
  66                                         "If you already have a suitable ffmpeg installation on your system, we recommend creating "
  67                                         "symbolic links from ffmpeg to ffmpeg_harvid and from ffprobe to ffprobe_harvid.\n"
  68                                         "\n"
  69                                         "see also http://manual.ardour.org/video-timeline/setup/"
  70                                  ), PROGRAM_NAME) << endmsg;
  71                 return;
  72         }
  73         ffexecok = true;
  74
  75         if (infile.empty() || !probe()) {
  76                 return;
  77         }
  78         probeok = true;
  79 }
  80
  81 TranscodeFfmpeg::~TranscodeFfmpeg ()
  82 {
  83   ;
  84 }
  85
  86 bool
  87 TranscodeFfmpeg::probe ()
  88 {
  89         ffoutput = "";
  90         char **argp;
  91         argp=(char**) calloc(7,sizeof(char*));
  92         argp[0] = strdup(ffprobe_exe.c_str());
  93         argp[1] = strdup("-print_format");
  94         argp[2] = strdup("csv=nk=0");
  95         argp[3] = strdup("-show_format");
  96         argp[4] = strdup("-show_streams");
  97         argp[5] = strdup(infile.c_str());
  98         argp[6] = 0;
  99         ffcmd = new ARDOUR::SystemExec(ffprobe_exe, argp);
 100         ffcmd->ReadStdout.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffprobeparse, this, _1 ,_2));
 101         ffcmd->Terminated.connect (*this, invalidator (*this), boost::bind (&TranscodeFfmpeg::ffexit, this), gui_context());
 102         if (ffcmd->start (SystemExec::IgnoreAndClose)) {
 103                 ffexit();
 104                 return false;
 105         }
 106
 107         /* wait for ffprobe process to exit */
 108         ffcmd->wait();
 109
 110         /* wait for interposer thread to copy all data.
 111          * SystemExec::Terminated is emitted and ffcmd set to NULL */
 112         int timeout = 300; // 1.5 sec
 113         while (ffcmd && --timeout > 0) {
 114                 Glib::usleep(5000);
 115                 ARDOUR::GUIIdle();
 116         }
 117         if (timeout == 0 || ffoutput.empty()) {
 118                 return false;
 119         }
 120
 121         /* parse */
 122
 123         std::vector<std::vector<std::string> > lines;
 124         ParseCSV(ffoutput, lines);
 125         double timebase = 0;
 126         m_width = m_height = 0;
 127         m_fps = m_aspect = 0;
 128         m_duration = 0;
 129         m_sar.clear();
 130         m_codec.clear();
 131         m_audio.clear();
 132
 133 #define PARSE_FRACTIONAL_FPS(VAR) \
 134         { \
 135                 std::string::size_type pos; \
 136                 VAR = atof(value); \
 137                 pos = value.find_first_of('/'); \
 138                 if (pos != std::string::npos) { \
 139                         VAR = atof(value.substr(0, pos)) / atof(value.substr(pos+1)); \
 140                 } \
 141         }
 142
 143         std::string duration_from_format;
 144
 145         for (std::vector<std::vector<std::string> >::iterator i = lines.begin(); i != lines.end(); ++i) {
 146                 if (i->at(0) == X_("format")) {
 147                         /* format,filename,#streams,format-name,format-long-name,start-time,duration,size,bitrate */
 148                         for (std::vector<std::string>::iterator kv = i->begin(); kv != i->end(); ++kv) {
 149                                 const size_t kvsep = kv->find('=');
 150                                 if(kvsep == std::string::npos) continue;
 151                                 std::string key = kv->substr(0, kvsep);
 152                                 std::string value = kv->substr(kvsep + 1);
 153                                 if (key == X_("duration")) {
 154                                         duration_from_format = value;
 155                                 }
 156                         }
 157                 } else
 158                 if (i->at(0) == X_("stream")) {
 159                         if (i->at(5) == X_("codec_type=video") && m_width == 0) {
 160
 161                                 for (std::vector<std::string>::iterator kv = i->begin(); kv != i->end(); ++kv) {
 162                                         const size_t kvsep = kv->find('=');
 163                                         if(kvsep == std::string::npos) continue;
 164                                         std::string key = kv->substr(0, kvsep);
 165                                         std::string value = kv->substr(kvsep + 1);
 166
 167                                         if (key == X_("index")) {
 168                                                 m_videoidx = atoi(value);
 169                                         } else if (key == X_("width")) {
 170                                                 m_width = atoi(value);
 171                                         } else if (key == X_("height")) {
 172                                                 m_height = atoi(value);
 173                                         } else if (key == X_("codec_name")) {
 174                                                 if (!m_codec.empty()) m_codec += " ";
 175                                                 m_codec += value;
 176                                         } else if (key == X_("codec_long_name")) {
 177                                                 if (!m_codec.empty()) m_codec += " ";
 178                                                 m_codec += "[" + value + "]";
 179                                         } else if (key == X_("codec_tag_string")) {
 180                                                 if (!m_codec.empty()) m_codec += " ";
 181                                                 m_codec += "(" + value + ")";
 182                                         } else if (key == X_("r_frame_rate")) {
 183                                                 PARSE_FRACTIONAL_FPS(m_fps)
 184                                         } else if (key == X_("avg_frame_rate") && m_fps == 0) {
 185                                                 PARSE_FRACTIONAL_FPS(m_fps)
 186                                         } else if (key == X_("time_base")) {
 187                                                 PARSE_FRACTIONAL_FPS(timebase)
 188                                         } else if (key == X_("timecode") && m_duration == 0 && m_fps > 0) {
 189                                                 int h,m,s; char f[32];
 190                                                 if (sscanf(i->at(16).c_str(), "%d:%d:%d:%32s",&h,&m,&s,f) == 4) {
 191                                                         m_duration = (ARDOUR::samplecnt_t) floor(m_fps * (
 192                                                                         h * 3600.0
 193                                                                 + m * 60.0
 194                                                                 + s * 1.0
 195                                                                 + atoi(f) / pow((double)10, (int)strlen(f))
 196                                                         ));
 197                                                 }
 198                                         } else if (key == X_("duration_ts") && m_fps == 0 && timebase !=0 ) {
 199                                                 m_duration = atof(value) * m_fps * timebase;
 200                                         } else if (key == X_("duration") && m_fps != 0 && m_duration == 0) {
 201                                                 m_duration = atof(value) * m_fps;
 202                                         } else if (key == X_("sample_aspect_ratio")) {
 203                                                 std::string::size_type pos;
 204                                                 pos = value.find_first_of(':');
 205                                                 if (pos != std::string::npos && atof(value.substr(pos+1)) != 0) {
 206                                                         m_sar = value;
 207                                                         m_sar.replace(pos, 1, "/");
 208                                                 }
 209                                         } else if (key == X_("display_aspect_ratio")) {
 210                                                 std::string::size_type pos;
 211                                                 pos = value.find_first_of(':');
 212                                                 if (pos != std::string::npos && atof(value.substr(pos+1)) != 0) {
 213                                                         m_aspect = atof(value.substr(0, pos)) / atof(value.substr(pos+1));
 214                                                 }
 215                                         }
 216                                 }
 217
 218                                 if (m_aspect == 0) {
 219                                         m_aspect = (double)m_width / (double)m_height;
 220                                 }
 221
 222                         } else if (i->at(5) == X_("codec_type=audio")) { /* new ffprobe */
 223                                 FFAudioStream as;
 224                                 for (std::vector<std::string>::iterator kv = i->begin(); kv != i->end(); ++kv) {
 225                                         const size_t kvsep = kv->find('=');
 226                                         if(kvsep == std::string::npos) continue;
 227                                         std::string key = kv->substr(0, kvsep);
 228                                         std::string value = kv->substr(kvsep + 1);
 229
 230                                         if (key == X_("channels")) {
 231                                                 as.channels   = atoi(value);
 232                                         } else if (key == X_("index")) {
 233                                                 as.stream_id  = value;
 234                                         } else if (key == X_("codec_long_name")) {
 235                                                 if (!as.name.empty()) as.name += " ";
 236                                                 as.name += value;
 237                                         } else if (key == X_("codec_name")) {
 238                                                 if (!as.name.empty()) as.name += " ";
 239                                                 as.name += value;
 240                                         } else if (key == X_("sample_fmt")) {
 241                                                 if (!as.name.empty()) as.name += " ";
 242                                                 as.name += "FMT:" + value;
 243                                         } else if (key == X_("sample_rate")) {
 244                                                 if (!as.name.empty()) as.name += " ";
 245                                                 as.name += "SR:" + value;
 246                                         }
 247
 248                                 }
 249                                 m_audio.push_back(as);
 250                         }
 251                 }
 252         }
 253         /* end parse */
 254
 255         if (m_duration == 0 && !duration_from_format.empty() && m_fps > 0) {
 256                 warning << "using video-duration from format (container)." << endmsg;
 257                 m_duration = atof(duration_from_format) * m_fps;
 258         }
 259
 260 #if 0 /* DEBUG */
 261         printf("FPS: %f\n", m_fps);
 262         printf("Duration: %lu frames\n",(unsigned long)m_duration);
 263         printf("W/H: %ix%i\n",m_width, m_height);
 264         printf("aspect: %f\n",m_aspect);
 265         printf("codec: %s\n",m_codec.c_str());
 266         if (m_audio.size() > 0) {
 267                 for (AudioStreams::iterator it = m_audio.begin(); it < m_audio.end(); ++it) {
 268                         printf("audio: %s - %i channels\n",(*it).stream_id.c_str(), (*it).channels);
 269                 }
 270         } else {
 271           printf("audio: no audio streams in file.\n");
 272         }
 273 #endif
 274
 275         return true;
 276 }
 277
 278 TranscodeFfmpeg::FFSettings
 279 TranscodeFfmpeg::default_encoder_settings ()
 280 {
 281         TranscodeFfmpeg::FFSettings ffs;
 282         ffs.clear();
 283         ffs["-vcodec"] = "mpeg4";
 284         ffs["-acodec"] = "ac3";
 285         ffs["-b:v"] = "5000k";
 286         ffs["-b:a"] = "160k";
 287         return ffs;
 288 }
 289
 290 TranscodeFfmpeg::FFSettings
 291 TranscodeFfmpeg::default_meta_data ()
 292 {
 293         TranscodeFfmpeg::FFSettings ffm;
 294         ffm.clear();
 295         ffm["comment"] = "Created with " PROGRAM_NAME;
 296         return ffm;
 297 }
 298
 299
 300 bool
 301 TranscodeFfmpeg::encode (std::string outfile, std::string inf_a, std::string inf_v, TranscodeFfmpeg::FFSettings ffs, TranscodeFfmpeg::FFSettings meta, bool map)
 302 {
 303 #define MAX_FFMPEG_ENCODER_ARGS (100)
 304         char **argp;
 305         int a=0;
 306
 307         argp=(char**) calloc(MAX_FFMPEG_ENCODER_ARGS,sizeof(char*));
 308         argp[a++] = strdup(ffmpeg_exe.c_str());
 309         if (m_avoffset < 0 || m_avoffset > 0) {
 310                 std::ostringstream osstream; osstream << m_avoffset;
 311                 argp[a++] = strdup("-itsoffset");
 312                 argp[a++] = strdup(osstream.str().c_str());
 313         }
 314         argp[a++] = strdup("-i");
 315         argp[a++] = strdup(inf_v.c_str());
 316
 317         argp[a++] = strdup("-i");
 318         argp[a++] = strdup(inf_a.c_str());
 319
 320         for(TranscodeFfmpeg::FFSettings::const_iterator it = ffs.begin(); it != ffs.end(); ++it) {
 321                 argp[a++] = strdup(it->first.c_str());
 322                 argp[a++] = strdup(it->second.c_str());
 323         }
 324         for(TranscodeFfmpeg::FFSettings::const_iterator it = meta.begin(); it != meta.end(); ++it) {
 325                 argp[a++] = strdup("-metadata");
 326                 argp[a++] = SystemExec::format_key_value_parameter (it->first.c_str(), it->second.c_str());
 327         }
 328
 329         if (m_fps > 0) {
 330                 m_lead_in  = rint (m_lead_in * m_fps) / m_fps;
 331                 m_lead_out = rint (m_lead_out * m_fps) / m_fps;
 332         }
 333
 334         if (m_lead_in != 0 && m_lead_out != 0) {
 335                 std::ostringstream osstream;
 336                 argp[a++] = strdup("-vf");
 337                 osstream << X_("color=c=black:s=") << m_width << X_("x") << m_height << X_(":d=") << m_lead_in;
 338                 if (!m_sar.empty()) osstream << X_(":sar=") << m_sar;
 339                 osstream << X_(" [pre]; ");
 340                 osstream << X_("color=c=black:s=") << m_width << X_("x") << m_height << X_(":d=") << m_lead_out;
 341                 if (!m_sar.empty()) osstream << X_(":sar=") << m_sar;
 342                 osstream << X_(" [post]; ");
 343                 osstream << X_("[pre] [in] [post] concat=n=3");
 344                 argp[a++] = strdup(osstream.str().c_str());
 345         } else if (m_lead_in != 0) {
 346                 std::ostringstream osstream;
 347                 argp[a++] = strdup("-vf");
 348                 osstream << X_("color=c=black:s=") << m_width << X_("x") << m_height << X_(":d=") << m_lead_in;
 349                 if (!m_sar.empty()) osstream << X_(":sar=") << m_sar;
 350                 osstream << X_(" [pre]; ");
 351                 osstream << X_("[pre] [in] concat=n=2");
 352                 argp[a++] = strdup(osstream.str().c_str());
 353         } else if (m_lead_out != 0) {
 354                 std::ostringstream osstream;
 355                 argp[a++] = strdup("-vf");
 356                 osstream << X_("color=c=black:s=") << m_width << X_("x") << m_height << X_(":d=") << m_lead_out;
 357                 if (!m_sar.empty()) osstream << X_(":sar=") << m_sar;
 358                 osstream << X_(" [post]; ");
 359                 osstream << X_("[in] [post] concat=n=2");
 360                 argp[a++] = strdup(osstream.str().c_str());
 361         }
 362
 363         if (map) {
 364                 std::ostringstream osstream;
 365                 argp[a++] = strdup("-map");
 366                 osstream << X_("0:") << m_videoidx;
 367                 argp[a++] = strdup(osstream.str().c_str());
 368                 argp[a++] = strdup("-map");
 369                 argp[a++] = strdup("1:0");
 370         }
 371
 372         argp[a++] = strdup("-y");
 373         argp[a++] = strdup(outfile.c_str());
 374         argp[a] = (char *)0;
 375         assert(a<MAX_FFMPEG_ENCODER_ARGS);
 376         /* Note: these are free()d in ~SystemExec */
 377 #if 1 /* DEBUG */
 378         if (debug_enable) { /* tentative debug mode */
 379         printf("EXPORT ENCODE:\n");
 380         for (int i=0; i< a; ++i) {
 381           printf("%s ", argp[i]);
 382         }
 383         printf("\n");
 384         }
 385 #endif
 386
 387         ffcmd = new ARDOUR::SystemExec(ffmpeg_exe, argp);
 388         ffcmd->ReadStdout.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffmpegparse_v, this, _1 ,_2));
 389         ffcmd->Terminated.connect (*this, invalidator (*this), boost::bind (&TranscodeFfmpeg::ffexit, this), gui_context());
 390         if (ffcmd->start (SystemExec::MergeWithStdin)) {
 391                 ffexit();
 392                 return false;
 393         }
 394         return true;
 395 }
 396
 397 bool
 398 TranscodeFfmpeg::extract_audio (std::string outfile, ARDOUR::samplecnt_t /*samplerate*/, unsigned int stream)
 399 {
 400         if (!probeok) return false;
 401   if (stream >= m_audio.size()) return false;
 402
 403         char **argp;
 404         int i = 0;
 405
 406         argp=(char**) calloc(15,sizeof(char*));
 407         argp[i++] = strdup(ffmpeg_exe.c_str());
 408         argp[i++] = strdup("-i");
 409         argp[i++] = strdup(infile.c_str());
 410 #if 0 /* ffmpeg write original samplerate, use a3/SRC to resample */
 411         argp[i++] = strdup("-ar");
 412         argp[i] = (char*) calloc(7,sizeof(char)); snprintf(argp[i++], 7, "%"PRId64, samplerate);
 413 #endif
 414         argp[i++] = strdup("-ac");
 415         argp[i] = (char*) calloc(3,sizeof(char)); snprintf(argp[i++], 3, "%i", m_audio.at(stream).channels);
 416         argp[i++] = strdup("-map");
 417         argp[i] = (char*) calloc(8,sizeof(char)); snprintf(argp[i++], 8, "0:%s", m_audio.at(stream).stream_id.c_str());
 418         argp[i++] = strdup("-vn");
 419         argp[i++] = strdup("-acodec");
 420         argp[i++] = strdup("pcm_f32le");
 421         argp[i++] = strdup("-y");
 422         argp[i++] = strdup(outfile.c_str());
 423         argp[i++] = (char *)0;
 424         /* Note: argp is free()d in ~SystemExec */
 425 #if 1 /* DEBUG */
 426         if (debug_enable) { /* tentative debug mode */
 427         printf("EXTRACT AUDIO:\n");
 428         for (int i=0; i< 14; ++i) {
 429           printf("%s ", argp[i]);
 430         }
 431         printf("\n");
 432         }
 433 #endif
 434
 435         ffcmd = new ARDOUR::SystemExec(ffmpeg_exe, argp);
 436         ffcmd->ReadStdout.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffmpegparse_a, this, _1 ,_2));
 437         ffcmd->Terminated.connect (*this, invalidator (*this), boost::bind (&TranscodeFfmpeg::ffexit, this), gui_context());
 438         if (ffcmd->start (SystemExec::MergeWithStdin)) {
 439                 ffexit();
 440                 return false;
 441         }
 442         return true;
 443 }
 444
 445
 446 bool
 447 TranscodeFfmpeg::transcode (std::string outfile, const int outw, const int outh, const int kbitps)
 448 {
 449         if (!probeok) return false;
 450
 451         char **argp;
 452         int bitrate = kbitps;
 453         int width = outw;
 454         int height = outh;
 455
 456         if (width < 1 || width > m_width) { width = m_width; } /* don't allow upscaling */
 457         if (height < 1 || height > m_height) { height = floor(width / m_aspect); }
 458
 459         if (bitrate == 0) {
 460                 const double bitperpixel = .7; /* avg quality */
 461                 bitrate = floor(m_fps * width * height * bitperpixel / 10000.0);
 462         } else {
 463                 bitrate = bitrate / 10;
 464         }
 465         if (bitrate < 10)  bitrate = 10;
 466         if (bitrate > 1000) bitrate = 1000;
 467
 468         argp=(char**) calloc(16,sizeof(char*));
 469         argp[0] = strdup(ffmpeg_exe.c_str());
 470         argp[1] = strdup("-i");
 471         argp[2] = strdup(infile.c_str());
 472         argp[3] = strdup("-b:v");
 473         argp[4] = (char*) calloc(7,sizeof(char)); snprintf(argp[4], 7, "%i0k", bitrate);
 474         argp[5] = strdup("-s");
 475         argp[6] = (char*) calloc(10,sizeof(char)); snprintf(argp[6], 10, "%ix%i", width, height);
 476         argp[7] = strdup("-y");
 477         argp[8] = strdup("-vcodec");
 478         argp[9] = strdup("mjpeg");
 479         argp[10] = strdup("-an");
 480         argp[11] = strdup("-intra");
 481         argp[12] = strdup("-g");
 482         argp[13] = strdup("1");
 483         argp[14] = strdup(outfile.c_str());
 484         argp[15] = (char *)0;
 485         /* Note: these are free()d in ~SystemExec */
 486 #if 1 /* DEBUG */
 487         if (debug_enable) { /* tentative debug mode */
 488         printf("TRANSCODE VIDEO:\n");
 489         for (int i=0; i< 15; ++i) {
 490           printf("%s ", argp[i]);
 491         }
 492         printf("\n");
 493         }
 494 #endif
 495         ffcmd = new ARDOUR::SystemExec(ffmpeg_exe, argp);
 496         ffcmd->ReadStdout.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffmpegparse_v, this, _1 ,_2));
 497         ffcmd->Terminated.connect (*this, invalidator (*this), boost::bind (&TranscodeFfmpeg::ffexit, this), gui_context());
 498         if (ffcmd->start (SystemExec::MergeWithStdin)) {
 499                 ffexit();
 500                 return false;
 501         }
 502         return true;
 503 }
 504
 505 void
 506 TranscodeFfmpeg::cancel ()
 507 {
 508         if (!ffcmd || !ffcmd->is_running()) { return;}
 509         ffcmd->write_to_stdin("q");
 510 #ifdef PLATFORM_WINDOWS
 511         Sleep(1000);
 512 #else
 513         sleep (1);
 514 #endif
 515         if (ffcmd) {
 516           ffcmd->terminate();
 517         }
 518 }
 519
 520 void
 521 TranscodeFfmpeg::ffexit ()
 522 {
 523         delete ffcmd;
 524         ffcmd=0;
 525         Finished(); /* EMIT SIGNAL */
 526 }
 527
 528 void
 529 TranscodeFfmpeg::ffprobeparse (std::string d, size_t /* s */)
 530 {
 531         ffoutput+=d;
 532 }
 533
 534 void
 535 TranscodeFfmpeg::ffmpegparse_a (std::string d, size_t /* s */)
 536 {
 537         const char *t;
 538         int h,m,s; char f[7];
 539         ARDOUR::samplecnt_t p = -1;
 540
 541         if (!(t=strstr(d.c_str(), "time="))) { return; }
 542
 543         if (sscanf(t+5, "%d:%d:%d.%s",&h,&m,&s,f) == 4) {
 544                 p = (ARDOUR::samplecnt_t) floor( 100.0 * (
 545                       h * 3600.0
 546                     + m * 60.0
 547                     + s * 1.0
 548                     + atoi(f) / pow((double)10, (int)strlen(f))
 549                 ));
 550                 p = p * m_fps / 100.0;
 551                 if (p > m_duration ) { p = m_duration; }
 552                 Progress(p, m_duration); /* EMIT SIGNAL */
 553         } else {
 554                 Progress(0, 0); /* EMIT SIGNAL */
 555         }
 556 }
 557
 558 void
 559 TranscodeFfmpeg::ffmpegparse_v (std::string d, size_t /* s */)
 560 {
 561         if (strstr(d.c_str(), "ERROR") || strstr(d.c_str(), "Error") || strstr(d.c_str(), "error")) {
 562                 warning << "ffmpeg-error: " << d << endmsg;
 563         }
 564         if (strncmp(d.c_str(), "frame=",6)) {
 565 #if 1 /* DEBUG */
 566                 if (debug_enable) {
 567                         d.erase(d.find_last_not_of(" \t\r\n") + 1);
 568                   printf("ffmpeg: '%s'\n", d.c_str());
 569                 }
 570 #endif
 571                 return;
 572         }
 573         ARDOUR::samplecnt_t f = atol(d.substr(6));
 574         if (f == 0) {
 575                 Progress(0, 0); /* EMIT SIGNAL */
 576         } else {
 577                 Progress(f, m_duration); /* EMIT SIGNAL */
 578         }
 579 }