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• Compile error when using ffmpeg

  30 janvier 2016, par polin

  I’ve found a strange problem during the compile of an example of ffmpeg in Qt Mac.

  I have installed the ffmpeg library and I have tested the examples of this with cc and gcc compiler on the terminal, and I don’t have any problem in the case of compile and run.

  But when I call the library (ffmpeg are C library) in Qt for compile the same code of the example, the g++ compiler give me many error.

  I have used this structure in the main.cpp code :

  #include "mainwindow.h"
  
  #include "ui_mainwindow.h"
  
  #include <qfiledialog>
  
  
  
  extern "C" {
  
  #include <libavutil></libavutil>imgutils.h>
  
  #include <libavutil></libavutil>samplefmt.h>
  
  #include <libavutil></libavutil>timestamp.h>
  
  #include <libavformat></libavformat>avformat.h>
  
  }
  
  
  
  #include <qdebug>
  
  </qdebug></qfiledialog>

  and the Compile Output gives me :

  In file included from ../audvid/main.cpp:7:
  
  /opt/local/include/libavutil/timestamp.h: In function 'char*
  
  av_ts_make_string(char*, int64_t)':
  
  /opt/local/include/libavutil/timestamp.h:48: warning: comparison
  
  between signed and unsigned integer expressions
  
  /opt/local/include/libavutil/timestamp.h:49: error: expected `)'
  
  before 'PRId64' /opt/local/include/libavutil/timestamp.h:49: warning:
  
  spurious trailing '%' in format
  
  /opt/local/include/libavutil/timestamp.h:49: warning: too many
  
  arguments for format /opt/local/include/libavutil/timestamp.h: At
  
  global scope: /opt/local/include/libavutil/timestamp.h:68: error:
  
  'AVRational' has not been declared
  
  /opt/local/include/libavutil/timestamp.h: In function 'char*
  
  av_ts_make_time_string(char*, int64_t, int*)':
  
  /opt/local/include/libavutil/timestamp.h:70: warning: comparison
  
  between signed and unsigned integer expressions
  
  /opt/local/include/libavutil/timestamp.h:71: error: 'av_q2d' was not
  
  declared in this scope ../audvid/main.cpp: In function 'int
  
  decode_packet(int*, int)': ../audvid/main.cpp:50: error: cannot
  
  convert 'AVRational*' to 'int*' for argument '3' to 'char*
  
  av_ts_make_time_string(char*, int64_t, int*)' ../audvid/main.cpp:73:
  
  error: cannot convert 'AVRational*' to 'int*' for argument '3' to
  
  'char* av_ts_make_time_string(char*, int64_t, int*)'
  
  ../audvid/main.cpp:75: error: 'struct AVFrame' has no member named
  
  'channels' ../audvid/main.cpp:84: error: 'struct AVFrame' has no
  
  member named 'channels' ../audvid/main.cpp:90: error: 'struct AVFrame'
  
  has no member named 'channels' ../audvid/main.cpp: In function 'int
  
  open_codec_context(int*, AVFormatContext*, AVMediaType)':
  
  ../audvid/main.cpp:112: error: 'av_get_media_type_string' was not
  
  declared in this scope ../audvid/main.cpp:123: error:
  
  'av_get_media_type_string' was not declared in this scope
  
  ../audvid/main.cpp:129: error: 'av_get_media_type_string' was not
  
  declared in this scope ../audvid/main.cpp: In function 'int
  
  get_format_from_sample_fmt(const char**, AVSampleFormat)':
  
  ../audvid/main.cpp:152: warning: comparison between signed and
  
  unsigned integer expressions ../audvid/main.cpp: In function 'int
  
  main(int, char**)': ../audvid/main.cpp:239: error: invalid conversion
  
  from 'void*' to 'uint8_t**' make: *** [main.o] Error 1 make: Leaving
  
  directory
  
  `/Users/polin/Desktop/audvid/audvid-build-    Qt_4_8_0_qt_everywhere_opensource_src_4_8_0_tp-Release'
  
  10:44:37: The process "/usr/bin/make" exited with code 2. Error while
  
  building/deploying project audvid (target: Qt 4.8.0
  
  (qt-everywhere-opensource-src-4.8.0-tp)) When executing step 'Make'

  I don’t understand if I make a mistake in the code or if I must change the Qt compiler ? (and I don’t know how can do this)

• shared:ERROR : closure compiler failed (rc : 1)

  10 avril 2019, par user2212461

  I want to build ffmpeg.js, but I am getting the following error when running make all :

      pop()()}}var shouldRunNow=true;if(Module["noInitialRun"])
  
  {shouldRunNow=false}Module["noExitRuntime"]=true;run();return
  
   __ffmpegjs_return}module["exports"]=__ffmpegjs;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
  
      ^^^^^^^^^^^^^^^
  
      1 error(s), 6 warning(s)
  
      shared:ERROR: closure compiler failed (rc: 1)
  
      Makefile:316: recipe for target 'ffmpeg-webm.js' failed
  
      make: *** [ffmpeg-webm.js] Error 1 

  The relevant lines in the Makefile are :

  # Compile bitcode to JavaScript.
  
  # NOTE(Kagami): Bump heap size to 64M, default 16M is not enough even
  
  # for simple tests and 32M tends to run slower than 64M.
  
  EMCC_COMMON_ARGS = \
  
      --closure 1 \
  
      -s TOTAL_MEMORY=67108864 \
  
      -s OUTLINING_LIMIT=20000 \
  
      -O3 --memory-init-file 0 \
  
      --pre-js $(PRE_JS) \
  
      -o $@
  
  
  
  ffmpeg-webm.js: $(FFMPEG_WEBM_BC) $(PRE_JS) $(POST_JS_SYNC)
  
      emcc $(FFMPEG_WEBM_BC) $(WEBM_SHARED_DEPS) \ --------->>>>> THIS IS LINE 316
  
          --post-js $(POST_JS_SYNC) \
  
          $(EMCC_COMMON_ARGS)

  How can I build ffmpeg.js with emcc correctly ?

• Sinon stun within ffmpeg error event listener

  22 juin 2022, par Pedro Elias

      const {writeStream, upload} = S3Service.uploadStream({ Bucket: process.env.BUCKET, Key: s3Path});

    ffmpeg(stream)
        .outputOptions('-copyts')
        .audioCodec("libopus")
        .toFormat("matroska")
        .on('error', (err, stdout, stderr) => {
            if (err) {
                console.log(err.message);
                upload.abort();
                return reject("Error FFMPEG");
            }
        })
        .on('start', (p) => console.log(p))
        .on(`end`, () => console.log("end ffmpeg"))
        .pipe(writeStream);

    upload.promise()
        .then(() => resolve("Successful audio converted transfer"))
        .catch((err) => console.error(err));


  


  I have the code above and I'm writing a unit test for it as follow :

  


  let uploadStreamStub = {
    writeStream: sandbox.stub().returnsThis(),
    upload: {
        promise: sandbox.stub(),
        abort: sandbox.stub()
     }
}

sandbox.stub(s3Service, "uploadStream").returns(uploadStreamStub);


  


  I'd like to stub upload.abort() :

  


  let onStub = sandbox.stub(ffmpeg.prototype, "on").returnsThis();
onStub.withArgs("error").yieldsAsync(new Error("test"));
sandbox.assert.calledOnce(uploadStreamStub.upload.abort);


  


  However, the stub is not working :
AssertError : expected stub to be called once but was called 0 times

  


  When I remove the "yieldsAsync" line and try to stub the promise it works :

  


  // onStub.withArgs("error").yieldsAsync(new Error("test"));
sandbox.assert.calledOnce(uploadStreamStub.upload.promise);


  


  So the stub only doesn't work on('error'...

  


  What I'm doing wrong ?

  


  How can I stub and check if abort has been called ?