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• aaccoder : remove previous PNS implementation from twoloop

  2 juillet 2015, par Rostislav Pehlivanov

  aaccoder : remove previous PNS implementation from twoloop
  This commit undoes commit c5d4f87e81111427c0952278ec247fa8ab1e6e52
  
  and removes PNS band marking from the twoloop coder, which has
  
  been reimplemented in a better way in this series of patches.
  Reviewed-by : Claudio Freire <klaussfreire@gmail.com>
  
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavcodec/aaccoder.c

• 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.

• Shotdetect : compiling error ("undefined reference")

  8 juillet 2015, par Voprosnik

  I am using Cygwin and I trying to install the program Shotdetect. I downloaded the source with git and also downloaded, compiled and installed ffmpeg through git.

  Installation of shotdetect doesn’t follow the ./configure && make && make install routine, but a cmake system of which I have no experience. Nonetheless there is a script that automates compiling and installation.

  Near the final stages of the compiling, I get a long series of errors concerning some ffmpeg modules :

  Linking CXX executable shotdetect-cmd.exe
  
  /usr/local/lib/libavformat.a(matroskadec.o): In function `matroska_decode_buffer':
  
  /git/ffmpeg/libavformat/matroskadec.c:1321: undefined reference to `BZ2_bzDecompressInit'
  
  /git/ffmpeg/libavformat/matroskadec.c:1336: undefined reference to `BZ2_bzDecompress'
  
  /git/ffmpeg/libavformat/matroskadec.c:1329: undefined reference to `BZ2_bzDecompressEnd'
  
  /git/ffmpeg/libavformat/matroskadec.c:1339: undefined reference to `BZ2_bzDecompressEnd'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_subpacket':
  
  /git/ffmpeg/libavcodec/opusdec.c:374: undefined reference to `swr_is_initialized'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_frame':
  
  /git/ffmpeg/libavcodec/opusdec.c:220: undefined reference to `swr_is_initialized'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_init_resample':
  
  /git/ffmpeg/libavcodec/opusdec.c:161: undefined reference to `swr_init'
  
  /git/ffmpeg/libavcodec/opusdec.c:167: undefined reference to `swr_convert'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_frame':
  
  /git/ffmpeg/libavcodec/opusdec.c:234: undefined reference to `swr_convert'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_flush_resample':
  
  /git/ffmpeg/libavcodec/opusdec.c:115: undefined reference to `swr_convert'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_subpacket':
  
  /git/ffmpeg/libavcodec/opusdec.c:406: undefined reference to `swr_close'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_flush':
  
  /git/ffmpeg/libavcodec/opusdec.c:567: undefined reference to `swr_close'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_close':
  
  /git/ffmpeg/libavcodec/opusdec.c:589: undefined reference to `swr_free'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_init':
  
  /git/ffmpeg/libavcodec/opusdec.c:642: undefined reference to `swr_alloc'
  
  /usr/local/lib/libavcodec.a(tiff.o): In function `tiff_uncompress_lzma':
  
  /git/ffmpeg/libavcodec/tiff.c:396: undefined reference to `lzma_stream_decoder'
  
  /git/ffmpeg/libavcodec/tiff.c:401: undefined reference to `lzma_code'
  
  /git/ffmpeg/libavcodec/tiff.c:402: undefined reference to `lzma_end'
  
  /usr/local/lib/libavcodec.a(utils.o): In function `recode_subtitle':
  
  /git/ffmpeg/libavcodec/utils.c:2672: undefined reference to `libiconv_open'
  
  /git/ffmpeg/libavcodec/utils.c:2707: undefined reference to `libiconv_close'
  
  /git/ffmpeg/libavcodec/utils.c:2693: undefined reference to `libiconv'
  
  /git/ffmpeg/libavcodec/utils.c:2694: undefined reference to `libiconv'
  
  /git/ffmpeg/libavcodec/utils.c:2707: undefined reference to `libiconv_close'
  
  /git/ffmpeg/libavcodec/utils.c:2707: undefined reference to `libiconv_close'
  
  /git/ffmpeg/libavcodec/utils.c:2707: undefined reference to `libiconv_close'
  
  /usr/local/lib/libavcodec.a(utils.o): In function `avcodec_open2':
  
  /git/ffmpeg/libavcodec/utils.c:1698: undefined reference to `libiconv_open'
  
  /git/ffmpeg/libavcodec/utils.c:1705: undefined reference to `libiconv_close'
  
  collect2: error: ld returned 1 exit status
  
  clang: error: linker (via gcc) command failed with exit code 1 (use -v to see invocation)
  
  CMakeFiles/shotdetect-cmd.dir/build.make:122: recipe for target 'shotdetect-cmd.exe' failed
  
  make[2]: *** [shotdetect-cmd.exe] Error 1
  
  CMakeFiles/Makefile2:95: recipe for target 'CMakeFiles/shotdetect-cmd.dir/all' failed
  
  make[1]: *** [CMakeFiles/shotdetect-cmd.dir/all] Error 2
  
  Makefile:117: recipe for target 'all' failed
  
  make: *** [all] Error 2

  Searching online for similar errors, I found the following proposed solutions

  1) fix pkg-config setup so configure will find out all dependencies ;

  2) build ffmpeg (libavcodec) without external dependencies ;

  3) add external dependencies manually with configure —extra-ldflags

  I guess the problem lies on how i compiled ffmpeg (just configure with no options) but other than that have no idea what to do with either of the above suggestions. Should I recompile ffmpeg with different options ?