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• ffmpeg compilation Error

  14 juillet 2016, par sivamnatesan3

  I have been trying to compile ffmpeg on my raspberry-pi, but it gives me a lot of warnings like (codec is deprecated) especially while run sudo make.

   pi@raspberrypi:/usr/src/ffmpeg $ sudo make && sudo make install
  
  
  
  ....... lots of successful execution here ...... 
  
  
  
  
  
  CC  libavfilter/avf_showfreqs.o
  
  libavfilter/lavfutils.c: In function ‘ff_load_image’:
  
  libavfilter/lavfutils.c:53:5: warning: ‘codec’ is deprecated (declared at    ./libavformat/avformat.h:880) [-Wdeprecated-declarations]
  
   codec_ctx = format_ctx->streams[0]->codec;
  
   ^
  
  libavfilter/lavfutils.c:79:5: warning: ‘avcodec_decode_video2’ is deprecated   (declared at ./libavcodec/avcodec.h:4763) [-Wdeprecated-declarations]
  
   ret = avcodec_decode_video2(codec_ctx, frame, &frame_decoded, &pkt);
  
   ^
  
  CC  libavfilter/lswsutils.o
  
  CC  libavfilter/opencl_allkernels.o
  
  CC  libavfilter/pthread.o
  
  CC  libavfilter/setpts.o
  
  CC  libavfilter/settb.o
  
  CC  libavfilter/split.o
  
  CC  libavfilter/src_movie.o
  
  libavfilter/src_movie.c: In function ‘movie_push_frame’:
  
  libavfilter/src_movie.c:524:9: warning: ‘avcodec_decode_video2’ is deprecated (declared at ./libavcodec/avcodec.h:4763) [-Wdeprecated-declarations]
  
       ret = avcodec_decode_video2(st->codec_ctx, frame, &got_frame, pkt);
  
       ^
  
  libavfilter/src_movie.c:527:9: warning: ‘avcodec_decode_audio4’ is deprecated (declared at ./libavcodec/avcodec.h:4714) [-Wdeprecated-declarations]
  
       ret = avcodec_decode_audio4(st->codec_ctx, frame, &got_frame, pkt);
  
       ^
  
  CC  libavfilter/transform.o
  
  CC  libavfilter/trim.o
  
  CC  libavfilter/vaf_spectrumsynth.o
  
  libavfilter/vaf_spectrumsynth.c: In function ‘try_push_frame’:
  
  libavfilter/vaf_spectrumsynth.c:370:19: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
  
   int ch, n, i, ret;                 ^
  
  CC  libavfilter/vf_alphamerge.o
  
  CC  libavfilter/vf_aspect.o
  
  CC  libavfilter/vf_atadenoise.o
  
  CC  libavfilter/vf_colorlevels.o
  
  CC  libavfilter/vf_colorspace.o
  
  libavfilter/vf_colorspace.c: In function ‘fill_rgb2xyz_table’:
  
  libavfilter/vf_colorspace.c:360:22: warning: passing argument 1 of ‘invert_matrix3x3’ from incompatible pointer type
  
   invert_matrix3x3(rgb2xyz, i);
  
                    ^
  
  libavfilter/vf_colorspace.c:277:13: note: expected ‘const double (*)[3]’ but argument is of type ‘double (*)[3]’
  
   static void invert_matrix3x3(const double in[3][3], double out[3][3])
  
           ^
  
  libavfilter/vf_colorspace.c: In function ‘fill_whitepoint_conv_table’:
  
  libavfilter/vf_colorspace.c:424:21: warning: passing argument 3 of ‘mul3x3’   from incompatible pointer type
  
   mul3x3(tmp, ma, fac);
  
  libavfilter/vf_colorspace.c:376:13: note: expected ‘const double (*)[3]’ but argument is of type ‘double (*)[3]’
  
  static void mul3x3(double dst[3][3], const double src1[3][3], const double src2[3][3])
  
           ^
  
  libavfilter/vf_colorspace.c:425:17: warning: passing argument 2 of ‘mul3x3’ from incompatible pointer type
  
   mul3x3(out, tmp, mai);
  
               ^
  
  libavfilter/vf_colorspace.c:376:13: note: expected ‘const double (*)[3]’ but argument is of type ‘double (*)[3]’
  
  static void mul3x3(double dst[3][3], const double src1[3][3], const double src2[3][3])
  
           ^
  
  libavfilter/vf_colorspace.c:425:22: warning: passing argument 3 of ‘mul3x3’ from incompatible pointer type
  
   mul3x3(out, tmp, mai);
  
                    ^
  
  libavfilter/vf_colorspace.c:376:13: note: expected ‘const double (*)[3]’ but argument is of type ‘double (*)[3]’
  
  static void mul3x3(double dst[3][3], const double src1[3][3], const double src2[3][3])
  
           ^
  
  libavfilter/vf_colorspace.c: In function ‘convert’:
  
  libavfilter/vf_colorspace.c:480:20: warning: passing argument 7 of ‘s->yuv2yuv’ from incompatible pointer type
  
                  s->yuv2yuv_coeffs, s->yuv_offset);
  
                  ^
  
  libavfilter/vf_colorspace.c:480:20: note: expected ‘const int16_t (*)[3][8]’ but argument is of type ‘int16_t (*)[3][8]’
  
  libavfilter/vf_colorspace.c:480:39: warning: passing argument 8 of ‘s->yuv2yuv’ from incompatible pointer type
  
                  s->yuv2yuv_coeffs, s->yuv_offset);
  
                                     ^
  
  libavfilter/vf_colorspace.c:480:39: note: expected ‘const int16_t (*)[8]’ but argument is of type ‘int16_t (*)[8]’
  
  libavfilter/vf_colorspace.c:502:20: warning: passing argument 7 of ‘s->yuv2rgb’ from incompatible pointer type
  
                  s->yuv2rgb_coeffs, s->yuv_offset[0]);
  
                  ^
  
  libavfilter/vf_colorspace.c:502:20: note: expected ‘const int16_t (*)[3][8]’ but argument is of type ‘int16_t (*)[3][8]’
  
  libavfilter/vf_colorspace.c:506:62: warning: passing argument 5 of ‘s->dsp.multiply3x3’ from incompatible pointer type
  
               s->dsp.multiply3x3(rgb, s->rgb_stride, w, h, s->lrgb2lrgb_coeffs);
  
                                                            ^
  
  libavfilter/vf_colorspace.c:506:62: note: expected ‘const int16_t (*)[3][8]’ but argument is of type ‘int16_t (*)[3][8]’
  
  libavfilter/vf_colorspace.c:511:28: warning: passing argument 7 of ‘s->rgb2yuv_fsb’ from incompatible pointer type
  
                          s->rgb2yuv_coeffs, s->yuv_offset[1], s->dither_scratch);
  
                          ^
  
  libavfilter/vf_colorspace.c:511:28: note: expected ‘const int16_t (*)[3][8]’ but argument is of type ‘int16_t (*)[3][8]’
  
  libavfilter/vf_colorspace.c:514:24: warning: passing argument 7 of ‘s->rgb2yuv’ from incompatible pointer type
  
                      s->rgb2yuv_coeffs, s->yuv_offset[1]);
  
                      ^
  
  libavfilter/vf_colorspace.c:514:24: note: expected ‘const int16_t (*)[3][8]’ but argument is of type ‘int16_t (*)[3][8]’
  
  libavfilter/vf_colorspace.c: In function ‘create_filtergraph’:
  
  libavfilter/vf_colorspace.c:614:30: warning: passing argument 1 of ‘invert_matrix3x3’ from incompatible pointer type
  
  
  
                   ^

  and it still continues....

  How to solve it ? what might be the problem for this warnings ?

• FFmpegMediaPlayer Stops When Network is Turned Off and Back On

  18 mai 2017, par Fallas

  I am currently working with FFmpegMediaPlayer in order to make a basic music player given a url. I got the basic functionality to work. On error, I show an error message, else I play the songs.
  The problem I am facing is, once the player starts, and I turn off my wifi and phone data, it stops the sound. Once I turn my wifi or phone data back one, I would like the player to continue but it simply stops. I have to stop and play again for it to continue.

  Is there a way to have the FFmpegMediaPlayer continue streaming ?

  This is what I have to initialize the player :

  mMediaPlayer = new FFmpegMediaPlayer();
  
      mMediaPlayer.setOnErrorListener(this);
  
      mMediaPlayer.setOnPreparedListener(this);
  
      mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
  
      mMediaPlayer.setOnBufferingUpdateListener(this);
  
      mMediaPlayer.setOnSeekCompleteListener(this);
  
  
  
      try {
  
          Uri uri = Uri.parse(radio_url);
  
          mMediaPlayer.setDataSource(mMainActivity, uri);
  
          mMediaPlayer.prepareAsync();
  
      } catch (IllegalArgumentException e) {
  
          e.printStackTrace();
  
      } catch (SecurityException e) {
  
          e.printStackTrace();
  
      } catch (IllegalStateException e) {
  
          e.printStackTrace();
  
      } catch (IOException e) {
  
          e.printStackTrace();
  
      }

  Then I have a function to handle when Play/Stop button is clicked :

  @Override
  
  public void onPlayButtonClicked(Button button) {
  
  
  
      if (radioInitialized) {
  
          mAnalytics.onStopButtonClicked();
  
          mMainLayout.loading(false);
  
          mMediaPlayer.pause();
  
       button.setBackground(mMainActivity.getResources().getDrawable(R.drawable.play_button));
  
          radioInitialized = false;
  
      } else {
  
          mAnalytics.onPlayButtonClicked();
  
          mMainLayout.loading(true);
  
          initRadio();
  
          button.setBackground(mMainActivity.getResources().getDrawable(R.drawable.stop_button));
  
          radioInitialized = true;
  
      }
  
  }

  Again, the basic functionality works, but I would like for it to continue streaming after wifi is turned back on.

• error - lottie to mp4 using puppeteer-lottie

  24 mars 2020, par Christian Lopez

  I have installed puppeteer-lottie and ffmpeg, but when I trying to use the await renderLottie function I got an error on the terminal "UnhandledPromiseRejectionWarning : ArgumentError : Expected number fps to be positive, got 0"

  here is how I use puppeteer :

  app.get("/video", (req, res) => {
  
  
  
    async function start() {
  
      await renderLottie({
  
          path: 'public/newData.json',
  
          output: 'public/example.mp4',
  
          height: 1920
  
        });
  
      }
  
    start();
  
  
  
    res.send("donwload your video");
  
  });

  this is the error :

  (node:3464) UnhandledPromiseRejectionWarning: ArgumentError: Expected number `fps` to be positive, got 0

  any suggestions ?