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• PHP - FFMPEG - Unable to apply multiple regular expressions on media output

  9 avril 2012, par Parth G

  I am writing a php script (I have to use php) to cycle through a dir of media files and displaying media information in a chart.

  Right now, I'm trying to do it on 1 file.

  I can successfully do so. I currently can parse the output (using regular expressions) to obtain information such as file name, duration, resolution, etc

  I was told that I can combine the regular expressions to make it more efficient.

  When I do however, I am unable to parse the ffmpeg output correctly.

  Consequently, I've tried copying the output to a string and parsing that using multiple expressions and it works just fine.

  Any help is appreciated.

  Thanks.

  ---

  Working code

  $media_info = "'test.mkv': Metadata: creation_time : 2011-03-12 09:04:18 Duration: 00:21:44.10, start: 0.000000, bitrate: 500 kb/s Chapter #0.0: start 0.097000, end 1304.107000 Metadata: title : 00:00:00.097 Stream #0:0: Video: h264 (High), yuv420p, 720x400 [SAR 80:81 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default) Stream #0:1: Audio: aac, 48000 Hz, stereo, s16 (default) At least one output file must be specified";
  
  
  
  
  
  $file = array();
  
  $file_test = preg_match_all("/'([a-zA-Z0-9\._]*\.[a-zA-Z0-9]*)'.* Duration: ([0-9]{2,}:[0-9]{2}:[0-9]{2}\.[0-9]*)/", $media_info, $file);;
  
  var_dump($file)

  ---

  Not Working Code

  ob_start();
  
  passthru("C:\\wamp\\www\\ffmpeg\\bin\\ffmpeg.exe -i \"{$videofile}\" 2>&1");
  
  $raw_data = ob_get_contents();
  
  ob_end_clean();
  
  
  
  
  
  $ffmpeg_info =  explode("from", $raw_data);
  
  
  
  
  
  $media_info = $ffmpeg_info[1];
  
  
  
  $file = array();
  
  $file_test = preg_match_all("/'([a-zA-Z0-9\._]*\.[a-zA-Z0-9]*)'.* Duration: ([0-9]{2,}:[0-9]{2}:[0-9]{2}\.[0-9]*)/", $media_info, $file);;
  
  var_dump($file)

  ---

  New Code

  I tried using the ffmpeg-php extension and the following works (except for printing the bit rate)

  $movie = new ffmpeg_movie($video_file);
  
  
  
  echo $movie->getFilename();
  
  echo "<br />" ; 
  
  echo $movie->getDuration();
  
  echo "<br />" ;
  
  echo $movie->getFrameWidth();
  
  echo "x";
  
  echo $movie->getFrameHeight();
  
  echo "<br />" ; 
  
  echo $movie->getBitRate();
  
  echo "<br />" ; 
  
  echo $movie->getVideoBitRate();
  
  echo "<br />" ; 
  
  echo $movie->getAudioBitRate();
  
  echo "<br />" ;
  
  echo $movie->getVideoCodec();
  
  echo "<br />" ;
  
  echo $movie->getAudioCodec();
  
  ?>

• muxing into MPEG-TS : wrong parameters for audio stream

  18 janvier 2017, par user1058600

  I am trying to mux video (H.264) and audio (PCM_S16LE, no compression) into an MPEG transport stream using ffmpeg. The video shows fine. The audio stream, however, does not play. The audio stream, shown by ffprobe is AAC, which is obviously not my intention. So I must be doing something wrong in adding the audio stream. Any idea how I can correct this ?

  This is my code for adding an audio stream :

  void add_audio_stream()
  
  {
  
  
  
      CodecID codec_id = CODEC_ID_PCM_S16LE;
  
  
  
      AVStream *p_ast = av_new_stream(fc, 1);
  
  
  
      if (!p_ast) {
  
          fprintf(stderr, "Could not alloc audio stream\n");
  
          exit(1);
  
      }
  
  
  
      ai = p_ast->index;
  
  
  
      AVCodecContext *pcc = p_ast->codec;
  
      avcodec_get_context_defaults2( pcc, AVMEDIA_TYPE_AUDIO );
  
  
  
      pcc->codec_type = AVMEDIA_TYPE_AUDIO;
  
      pcc->codec_id = codec_id;
  
      pcc->sample_fmt = AV_SAMPLE_FMT_S16;
  
      //pcc->bit_rate = 44100*16*2;
  
      pcc->bit_rate = 0;
  
      pcc->sample_rate = 44100;
  
      pcc->channels = 2;
  
      pcc->time_base = (AVRational){1, 44100};
  
  
  
  
  
      // some formats want stream headers to be separate
  
      if (fc->oformat->flags & AVFMT_GLOBALHEADER)
  
      {
  
          printf(" **** 1 ****\n");
  
          pcc->flags |= CODEC_FLAG_GLOBAL_HEADER;
  
      }
  
      else
  
          printf(" **** 2 ****\n");
  
  
  
  
  
      AVCodec *codec;
  
  
  
      /* find the audio encoder */
  
      codec = avcodec_find_encoder(pcc->codec_id);
  
      if (!codec) {
  
          fprintf(stderr, "codec not found\n");
  
          exit(1);
  
      }
  
  
  
  
  
      /* open it */
  
      if (avcodec_open(pcc, codec) < 0) 
  
      {
  
          fprintf(stderr, "could not open codec\n");
  
          exit(1);
  
      }
  
  }

  Here is the output of ffprobe :

  ffprobe version N-32405-g6337de9, Copyright (c) 2007-2011 the FFmpeg developers
  
    built on Sep  8 2011 11:20:12 with gcc 4.4.3
  
    configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-x11grab --enable-libmp3lame
  
    libavutil    51. 16. 0 / 51. 16. 0
  
    libavcodec   53. 13. 0 / 53. 13. 0
  
    libavformat  53. 12. 0 / 53. 12. 0
  
    libavdevice  53.  3. 0 / 53.  3. 0
  
    libavfilter   2. 39. 0 /  2. 39. 0
  
    libswscale    2.  1. 0 /  2.  1. 0
  
    libpostproc  51.  2. 0 / 51.  2. 0
  
  [mpegts @ 0xa96daa0] Continuity Check Failed
  
  [mpegts @ 0xa96daa0] Continuity Check Failed
  
  [aac @ 0xa974da0] channel element 0.1 is not allocated
  
  [aac @ 0xa974da0] More than one AAC RDB per ADTS frame is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  
  
  .
  
  .
  
  lot of gobbly-gook about missing AAC parameters . . . 
  
  .
  
  .
  
  
  
  [aac @ 0xa974da0] More than one AAC RDB per ADTS frame is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0xa974da0] Error decoding AAC frame header.
  
  [mpegts @ 0xa96daa0] max_analyze_duration 5000000 reached at 5429789
  
  [mpegts @ 0xa96daa0] Continuity Check Failed
  
  [mpegts @ 0xa96daa0] Continuity Check Failed
  
  
  
  Input #0, mpegts, from 'test_audio_video.mts':
  
    Duration: 00:00:40.35, start: 0.010000, bitrate: 1907 kb/s
  
    Program 1 
  
      Metadata:
  
        service_name    : Service01
  
        service_provider: FFmpeg
  
  Stream #0.0[0x100]: Video: h264 (Constrained Baseline) ([27][0][0][0] / 0x001B), yuv420p, 640x480, 30 fps, 30 tbr, 90k tbn, 60 tbc
  
  
  
  Stream #0.1[0x101]: Audio: aac ([6][0][0][0] / 0x0006), 96000 Hz, 4.0, s16, 9 kb/s

• avutil/common : Don't auto-include mem.h

  25 mars 2024, par Andreas Rheinhardt

  avutil/common : Don't auto-include mem.h
  There are lots of files that don't need it : The number of object
  
  files that actually need it went down from 2011 to 884 here.
  Keep it for external users in order to not cause breakages.
  Also improve the other headers a bit while just at it.
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] compat/w32dlfcn.h
  • [DH] doc/examples/avio_read_callback.c
  • [DH] doc/examples/decode_filter_audio.c
  • [DH] doc/examples/decode_filter_video.c
  • [DH] doc/examples/hw_decode.c
  • [DH] doc/examples/qsv_transcode.c
  • [DH] doc/examples/remux.c
  • [DH] doc/examples/transcode.c
  • [DH] doc/examples/transcode_aac.c
  • [DH] fftools/cmdutils.c
  • [DH] fftools/ffmpeg.c
  • [DH] fftools/ffmpeg_dec.c
  • [DH] fftools/ffmpeg_demux.c
  • [DH] fftools/ffmpeg_enc.c
  • [DH] fftools/ffmpeg_filter.c
  • [DH] fftools/ffmpeg_hw.c
  • [DH] fftools/ffmpeg_opt.c
  • [DH] fftools/ffplay.c
  • [DH] fftools/ffplay_renderer.c
  • [DH] fftools/ffprobe.c
  • [DH] fftools/fopen_utf8.h
  • [DH] libavcodec/4xm.c
  • [DH] libavcodec/8svx.c
  • [DH] libavcodec/a64multienc.c
  • [DH] libavcodec/aacdec.c
  • [DH] libavcodec/aacdec_template.c
  • [DH] libavcodec/aacenc.c
  • [DH] libavcodec/aacpsy.c
  • [DH] libavcodec/ac3_parser.c
  • [DH] libavcodec/ac3dec.c
  • [DH] libavcodec/ac3enc.c
  • [DH] libavcodec/ac3enc_fixed.c
  • [DH] libavcodec/ac3enc_float.c
  • [DH] libavcodec/ac3enc_template.c
  • [DH] libavcodec/adpcmenc.c
  • [DH] libavcodec/adts_parser.c
  • [DH] libavcodec/agm.c
  • [DH] libavcodec/aic.c
  • [DH] libavcodec/alac.c
  • [DH] libavcodec/alacenc.c
  • [DH] libavcodec/alsdec.c
  • [DH] libavcodec/amfenc_av1.c
  • [DH] libavcodec/amfenc_h264.c
  • [DH] libavcodec/amfenc_hevc.c
  • [DH] libavcodec/apac.c
  • [DH] libavcodec/apedec.c
  • [DH] libavcodec/ass.c
  • [DH] libavcodec/atrac1.c
  • [DH] libavcodec/atrac3.c
  • [DH] libavcodec/atrac3plusdec.c
  • [DH] libavcodec/atrac9dec.c
  • [DH] libavcodec/atsc_a53.c
  • [DH] libavcodec/audio_frame_queue.c
  • [DH] libavcodec/audiotoolboxdec.c
  • [DH] libavcodec/audiotoolboxenc.c
  • [DH] libavcodec/av1dec.c
  • [DH] libavcodec/avdct.c
  • [DH] libavcodec/avuienc.c
  • [DH] libavcodec/bfi.c
  • [DH] libavcodec/bgmc.c
  • [DH] libavcodec/bink.c
  • [DH] libavcodec/bonk.c
  • [DH] libavcodec/bsf/dts2pts.c
  • [DH] libavcodec/bsf/evc_frame_merge.c
  • [DH] libavcodec/bsf/extract_extradata.c
  • [DH] libavcodec/bsf/filter_units.c
  • [DH] libavcodec/bsf/h264_metadata.c
  • [DH] libavcodec/bsf/noise.c
  • [DH] libavcodec/cavs.c
  • [DH] libavcodec/cavsdec.c
  • [DH] libavcodec/cbs.c
  • [DH] libavcodec/cbs_h2645.c
  • [DH] libavcodec/cbs_jpeg.c
  • [DH] libavcodec/cbs_sei.c
  • [DH] libavcodec/cdtoons.c
  • [DH] libavcodec/cdxl.c
  • [DH] libavcodec/cfhd.c
  • [DH] libavcodec/cfhdenc.c
  • [DH] libavcodec/cinepakenc.c
  • [DH] libavcodec/clearvideo.c
  • [DH] libavcodec/cllc.c
  • [DH] libavcodec/cngdec.c
  • [DH] libavcodec/cngenc.c
  • [DH] libavcodec/cook.c
  • [DH] libavcodec/cscd.c
  • [DH] libavcodec/cuviddec.c
  • [DH] libavcodec/d3d12va_av1.c
  • [DH] libavcodec/d3d12va_decode.c
  • [DH] libavcodec/dca_core.c
  • [DH] libavcodec/dca_lbr.c
  • [DH] libavcodec/dca_xll.c
  • [DH] libavcodec/dcaadpcm.c
  • [DH] libavcodec/dcadec.c
  • [DH] libavcodec/dcaenc.c
  • [DH] libavcodec/decode.c
  • [DH] libavcodec/dirac.c
  • [DH] libavcodec/diracdec.c
  • [DH] libavcodec/dnxhddec.c
  • [DH] libavcodec/dnxhdenc.c
  • [DH] libavcodec/dovi_rpu.c
  • [DH] libavcodec/dsddec.c
  • [DH] libavcodec/dsicinvideo.c
  • [DH] libavcodec/dvbsubdec.c
  • [DH] libavcodec/dvdsubdec.c
  • [DH] libavcodec/dvdsubenc.c
  • [DH] libavcodec/dxa.c
  • [DH] libavcodec/dxv.c
  • [DH] libavcodec/dxva2.c
  • [DH] libavcodec/dxva2_av1.c
  • [DH] libavcodec/dxvenc.c
  • [DH] libavcodec/eamad.c
  • [DH] libavcodec/eatqi.c
  • [DH] libavcodec/elbg.c
  • [DH] libavcodec/encode.c
  • [DH] libavcodec/error_resilience.c
  • [DH] libavcodec/escape124.c
  • [DH] libavcodec/evc_ps.c
  • [DH] libavcodec/exr.c
  • [DH] libavcodec/exrenc.c
  • [DH] libavcodec/fastaudio.c
  • [DH] libavcodec/faxcompr.c
  • [DH] libavcodec/ffv1.c
  • [DH] libavcodec/ffv1dec.c
  • [DH] libavcodec/ffv1enc.c
  • [DH] libavcodec/ffwavesynth.c
  • [DH] libavcodec/fic.c
  • [DH] libavcodec/flac_parser.c
  • [DH] libavcodec/flacdec.c
  • [DH] libavcodec/flacenc.c
  • [DH] libavcodec/flashsv.c
  • [DH] libavcodec/flashsv2enc.c
  • [DH] libavcodec/fmvc.c
  • [DH] libavcodec/frame_thread_encoder.c
  • [DH] libavcodec/fraps.c
  • [DH] libavcodec/g2meet.c
  • [