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• Error inclunding in FFMPEG project on a Mac using clang

  3 juillet 2018, par benwiz

  I’m having trouble running the remuxing.c example code. I get the following error. I have confirmed that the files can be found in /usr/local/include. I am running macOS Sierra 10.12.6.

  $ cc -v playground/remuxing.c
  
  Apple LLVM version 9.0.0 (clang-900.0.39.2)
  
  Target: x86_64-apple-darwin16.7.0
  
  Thread model: posix
  
  InstalledDir: /Library/Developer/CommandLineTools/usr/bin
  
   "/Library/Developer/CommandLineTools/usr/bin/clang" -cc1 -triple x86_64-apple-macosx10.12.0 -Wdeprecat
  
  ed-objc-isa-usage -Werror=deprecated-objc-isa-usage -emit-obj -mrelax-all -disable-free -disable-llvm-v
  
  erifier -discard-value-names -main-file-name remuxing.c -mrelocation-model pic -pic-level 2 -mthread-mo
  
  del posix -mdisable-fp-elim -fno-strict-return -masm-verbose -munwind-tables -target-cpu penryn -target
  
  -linker-version 305 -v -dwarf-column-info -debugger-tuning=lldb -resource-dir /Library/Developer/Comman
  
  dLineTools/usr/lib/clang/9.0.0 -fdebug-compilation-dir /Users/myuser/github/personal/synthesthesi
  
  a -ferror-limit 19 -fmessage-length 103 -stack-protector 1 -fblocks -fobjc-runtime=macosx-10.12.0 -fenc
  
  ode-extended-block-signature -fmax-type-align=16 -fdiagnostics-show-option -fcolor-diagnostics -o /var/
  
  folders/8s/2xc3v8dd7zz2c2trymzybvd534bnhg/T/remuxing-819223.o -x c playground/remuxing.c
  
  clang -cc1 version 9.0.0 (clang-900.0.39.2) default target x86_64-apple-darwin16.7.0
  
  #include "..." search starts here:
  
  #include <...> search starts here:
  
   /usr/local/include
  
   /Library/Developer/CommandLineTools/usr/lib/clang/9.0.0/include
  
   /Library/Developer/CommandLineTools/usr/include
  
   /usr/include
  
   /System/Library/Frameworks (framework directory)
  
   /Library/Frameworks (framework directory)
  
  End of search list.
  
   "/Library/Developer/CommandLineTools/usr/bin/ld" -demangle -lto_library /Library/Developer/CommandLineTools/usr/lib/libLTO.dylib -no_deduplicate -dynamic -arch x86_64 -macosx_version_min 10.12.0 -o a.out /var/folders/8s/2xc3v8dd7zz2c2trymzybvd534bnhg/T/remuxing-819223.o -lSystem /Library/Developer/CommandLineTools/usr/lib/clang/9.0.0/lib/darwin/libclang_rt.osx.a
  
  Undefined symbols for architecture x86_64:
  
    "_av_dump_format", referenced from:
  
        _main in remuxing-819223.o
  
    "_av_freep", referenced from:
  
        _main in remuxing-819223.o
  
    "_av_interleaved_write_frame", referenced from:
  
        _main in remuxing-819223.o
  
    "_av_mallocz_array", referenced from:
  
        _main in remuxing-819223.o
  
    "_av_packet_unref", referenced from:
  
        _main in remuxing-819223.o
  
    "_av_read_frame", referenced from:
  
        _main in remuxing-819223.o
  
    "_av_rescale_q", referenced from:
  
        _main in remuxing-819223.o
  
    "_av_rescale_q_rnd", referenced from:
  
        _main in remuxing-819223.o
  
    "_av_strerror", referenced from:
  
        _av_make_error_string in remuxing-819223.o
  
    "_av_write_trailer", referenced from:
  
        _main in remuxing-819223.o
  
    "_avcodec_parameters_copy", referenced from:
  
        _main in remuxing-819223.o
  
    "_avformat_alloc_output_context2", referenced from:
  
        _main in remuxing-819223.o
  
    "_avformat_close_input", referenced from:
  
        _main in remuxing-819223.o
  
    "_avformat_find_stream_info", referenced from:
  
        _main in remuxing-819223.o
  
    "_avformat_free_context", referenced from:
  
        _main in remuxing-819223.o
  
    "_avformat_new_stream", referenced from:
  
        _main in remuxing-819223.o
  
    "_avformat_open_input", referenced from:
  
        _main in remuxing-819223.o
  
    "_avformat_write_header", referenced from:
  
        _main in remuxing-819223.o
  
    "_avio_closep", referenced from:
  
        _main in remuxing-819223.o
  
    "_avio_open", referenced from:
  
        _main in remuxing-819223.o
  
  ld: symbol(s) not found for architecture x86_64
  
  clang: error: linker command failed with exit code 1 (use -v to see invocation)

• Unable to Creating Video File from one audio file and single image file in windows form c# using ffmpeg.exe

  25 juillet 2018, par MoonTech

  Hello I created one form for creating video from one mp3 file and one jpg file.
  For this I Wrote this Code but this is not the answer.

   private void button2_Click(object sender, EventArgs e)
  
      {         
  
          string input_audio = @"C:\Users\...\Desktop\test\audio";        
  
  
  
          string outPut = @"C:\Users\...\Desktop\test\outputvideo";
  
          string img= @"C:\Users\...\Desktop\folder image\image123";
  
  
  
          stripAudioTest(img, input_audio,  outPut);
  
  
  
      }
  
  
  
      public void stripAudioTest(string image, string AudioFile, string outputfile)
  
      {
  
          string FFMPEG_PATH = "ffmpeg.exe";          
  
  
  
          string strParam = "-loop 1 -i "+ image+".jpg  -i "+ AudioFile+ ".mp3 -c:v libx264 -c:a aac -strict experimental -b:a 128k -shortest "+ outputfile+ ".mp4";                    
  
  
  
          process(FFMPEG_PATH, strParam);
  
  
  
      }
  
  
  
      public void process(string Path_FFMPEG, string strParam)
  
      {
  
          try
  
          {
  
              Process ffmpeg = new Process();
  
              ffmpeg.StartInfo.UseShellExecute = false;
  
              ffmpeg.StartInfo.RedirectStandardOutput = true;              
  
              ffmpeg.StartInfo.CreateNoWindow = true;
  
              ffmpeg.StartInfo.FileName = Path_FFMPEG;
  
              ffmpeg.StartInfo.Arguments = strParam;               
  
              ffmpeg.Start();
  
              ffmpeg.StartInfo.ErrorDialog = true;             
  
              ffmpeg.WaitForExit();
  
  
  
          }
  
          catch (Exception ex)
  
          {
  
              MessageBox.Show(ex.Message);
  
          }
  
      }

  FYI : mp3 file Duration 5 minutes and 23 Seconds .
  1. I am new in FFmpeg so I don’t have idea how to get out of this.
  2. I Got ffmpeg command from Here
  3. I tried Few of more ffmpeg command .Please check it below.

  string strParam = "-y -stream_loop -1 -i " + image + ".jpg -i " + AudioFile + ".mp3 -y -r 25 -b 2500k - acodec ac3 - ab 384k - vcodec mpeg4 " + outputfile+".mp4";

  another one

  string strParam = "-loop 1 -i " + image + ".jpg -i " + AudioFile+ ".mp3 -c:v libx264 -tune stillimage -c:a aac -strict experimental -b:a 192k -pix_fmt yuv420p -shortest " + outputfile+".mp4";

• Convert form 30 to 60fps by increasing speed, not duplicating frames, using FFmpeg

  12 août 2018, par Matt Pellegrini

  I have a video that is incorrectly labelled at 30fps, it is actually 60fps and so looks like it’s being played at half speed. The audio is fine, that is, the soundtrack finishes half way through the video clip. I’d like to know how, if possible to fix this, that is double the video speed, making it 60fps and meaning that the audio and video are synced.

  The file is H.264 and the audio MPEG-4 AAC.

  File details as given by ffmpeg, as requested :

  ffmpeg version 0.8.9-6:0.8.9-0ubuntu0.13.10.1, Copyright (c) 2000-2013 the Libav developers
  
  built on Nov  9 2013 19:09:46 with gcc 4.8.1
  
  *** THIS PROGRAM IS DEPRECATED ***
  
  This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from './Tignes60fps.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: isommp42
  
      creation_time   : 2014-01-13 02:23:09
  
      Duration: 00:08:33.21, start: 0.000000, bitrate: 5690 kb/s
  
      Stream #0.0(eng): Video: h264 (High), yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], 5609 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc
  
  Metadata:
  
      creation_time   : 2014-01-13 02:23:09
  
      Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 156 kb/s
  
  Metadata:
  
        creation_time   : 2014-01-13 02:23:09
  
  At least one output file must be specified