Recherche avancée

Sur d’autres sites (7547)

• Strict Experimental Flag for Converting ts files to mp4 files in node using ffmpeg

  13 août 2015, par Recurrence

  I’m trying to convert a series of .ts files into one mp4 file in using ffmpeg via a node execute :

  var combineVideo = function (videoFiles, fileName, callback) {
  
  var videoDone = _.after(videoFiles.length, function () {
  
      var ffmpegcommand = 'ffmpeg -i "concat:';
  
      ffmpegcommand += _.inject(videoFiles, function (command, name, i) {
  
          return command + process.env.UPLOAD_PATH + fileName + '-' + i + '.ts|';
  
      }, '');
  
  
  
      ffmpegcommand = ffmpegcommand.substring(0, ffmpegcommand.length - 1);
  
      ffmpegcommand += '"  -c copy -bsf:a aac_adtstoasc -strict -2 ' +  process.env.UPLOAD_PATH + fileName + 'combined-video.mp4';
  
  
  
      exec(ffmpegcommand, function (error, stdout, stderr) {
  
          if (error) {
  
              logger.error(error);
  
          }
  
              _.each(videoFiles, function (v, i) {
  
              fs.unlink(process.env.UPLOAD_PATH + fileName + '-' + i + '.ts');
  
          });
  
          callback();
  
      });
  
  });
  
  _.each(videoFiles, function (file, i) {
  
      convertWebmToMp4(fileName + '-' + i, videoDone);
  
  });

  I’ve logged the command before executing it as such :

  combining video
  /usr/bin/ffmpeg -i "concat :./uploads/db42ab00-4140-11e5-83dd-936f6cb4a63a-0.ts|./uploads/db42ab00-4140-11e5-83dd-936f6cb4a63a-1.ts" -c copy -bsf:a aac_adtstoasc -strict -2 ./uploads/db42ab00-4140-11e5-83dd-936f6cb4a63acombined-video.mp4

  The error message I receive is :

  [Error : Command failed : ffmpeg version 2.5.7-0ubuntu0.15.04.1 Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 4.9.2 (Ubuntu 4.9.2-10ubuntu13)

  [aac @ 0x8ae8c0] The encoder ’aac’ is experimental but experimental codecs are not enabled, add ’-strict -2’ if you want to use it.
  ] killed : false, code : 1, signal : null

  However, the exact ffmpeg command already has the -strict -2 flags and it runs just fine either on the command line or via a separate .js file. I am very stumped.

• FFmpeg compile opus error

  10 août 2015, par David Norgren

  I’m following this tutorial to build FFmpeg statically (to not need DLLs) using Microsoft’s compilers : http://cristobaldobranco.github.io/blog/2015/01/20/compiling-ffmpeg-with-windows-tools/

  I’m however running into trouble when attempting to compile this :

  #pragma comment (lib, "libavformat.a")
  
  #define __STDC_CONSTANT_MACROS
  
  
  
  extern "C" {
  
      #include <libavformat></libavformat>avformat.h>
  
  }
  
  
  
  int main() {
  
      av_register_all();
  
      return 0;
  
  }

  It seems to be able to find the header and library files, but I’m getting weird errors about opus :

  

  Here are my MSYS commands :

  cd C:/Libs/ffmpeg
  
  ./configure --toolchain=msvc --arch=x86 --prefix=build/ --disable-network
  
  make
  
  make install

  How do I get rid of these errors ?

• getting a lot of errors when reading udp stream with avconv

  5 août 2015, par eladm26

  I’m trying to read a udp video stream and I’m getting mostly errors :)
  here is my input and output :

  avconv   -i udp://**.**.**.**:**** output.ts
  
  avconv version 11.4, Copyright (c) 2000-2014 the Libav developers
  
    built on Jul 14 2015 12:43:36 with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
  
  [mpeg2video @ 0x25a7060] Invalid frame dimensions 0x0.
  
      Last message repeated 13 times
  
  [mpegts @ 0x2582040] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mpegts, from 'udp://239.1.1.1:59001':
  
    Duration: N/A, start: 17336.030511, bitrate: 24640 kb/s
  
    Program 3
  
      Stream #0.0[0x31]: Video: mpeg2video (Main), yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], 24000 kb/s, 29.97 fps, 90k tbn, 59.94 tbc
  
      Stream #0.1[0x34](eng): Audio: ac3, 48000 Hz, 5.1, fltp, 448 kb/s
  
      Stream #0.2[0x35](spa): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
  
  File 'output.ts' already exists. Overwrite ? [y/N] y
  
  Output #0, mpegts, to 'output.ts':
  
    Metadata:
  
      encoder         : Lavf56.1.0
  
      Stream #0.0: Video: mpeg2video, yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 29.97 fps, 90k tbn, 29.97 tbc
  
      Metadata:
  
        encoder         : Lavc56.1.0 mpeg2video
  
      Stream #0.1(eng): Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
  
      Metadata:
  
        encoder         : Lavc56.1.0 mp2
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mpeg2video (native) -> mpeg2video (native))
  
    Stream #0:1 -> #0:1 (ac3 (native) -> mp2 (native))
  
  Press ctrl-c to stop encoding
  
  [mpeg2video @ 0x25c85e0] warning: first frame is no keyframe
  
  Continuity check failed for pid 49 expected 12 got 5 bitrate=3922.8kbits/s
  
  [mpegts @ 0x2582040] Continuity check failed for pid 52 expected 6 got 1
  
  [mpegts @ 0x2582040] Continuity check failed for pid 53 expected 7 got 14
  
  [mpegts @ 0x2582040] Continuity check failed for pid 0 expected 4 got 1
  
  [mpeg2video @ 0x25c85e0] ac-tex damaged at 2 53
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 19 38
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 18 54
  
  [mpeg2video @ 0x25c85e0] ac-tex damaged at 1 39
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 48 55
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 2 56
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 17 40
  
  [mpeg2video @ 0x25c85e0] ac-tex damaged at 5 60
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 1 61
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 16 41
  
  [mpeg2video @ 0x25c85e0] ac-tex damaged at 15 46
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 6 62
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 24 42
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 16 47
  
  [mpeg2video @ 0x25c85e0] mb incr damaged
  
  [mpeg2video @ 0x25c85e0] ac-tex damaged at 3 44
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 8 63
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 11 65
  
  [mpeg2video @ 0x25c85e0] ac-tex damaged at 1 66
  
  [mpeg2video @ 0x25c85e0] invalid mb type in P Frame at 42 50
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 9 51
  
  [mpeg2video @ 0x25c85e0] ac-tex damaged at 45 67
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 48 52
  
  [mpeg2video @ 0x25c85e0] MVs not available, ER not possible.
  
  [mpegts @ 0x2582040] PES packet size mismatch
  
      Last message repeated 1 times
  
  [ac3 @ 0x25c8b00] exponent out-of-range
  
  [ac3 @ 0x25c8b00] error decoding the audio block
  
  [mpegts @ 0x2582040] Continuity check failed for pid 49 expected 13 got 5
  
  [mpegts @ 0x2582040] Continuity check failed for pid 52 expected 12 got 14
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 97 65
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 1 4
  
  [mpeg2video @ 0x25c85e0] invalid cbp at 18 5
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 1 6
  
  [mpeg2video @ 0x25c85e0] mb incr damaged
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 34 8
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 8 9
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 6 11
  
  [mpeg2video @ 0x25c85e0] invalid cbp at 5 18
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 13 19
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 3 20
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 16 21
  
  [mpeg2video @ 0x25c85e0] invalid cbp at 3 22
  
  [mpeg2video @ 0x25c85e0] invalid mb type in B Frame at 4 23
  
  [mpeg2video @ 0x25c85e0] invalid mb type in B Frame at 3 24

  I’ve searched stack overflow and couldn’t find any similar.
  maybe it has something to do with avconv cant handle the udp frames fast enough ?
  I lost any hope so any help is very welcomed.

  Thanks.