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• Incorrect codec parameters for webm conversion

  20 avril 2015, par peterbw321

  I am using a shared hosting server with ffmpeg installed. i have been told they cant upgrade the version I have. I am trying to convert video files to html5 formats. When I try to convert to webm, I get below error. Can anyone help with this problem ?

  exec("/usr/bin/ffmpeg -i eliza.mp4 -acodec copy -vcodec copy 2>&1 video.webm");
  
  
  
      array(29) { [0]=> string(67) "FFmpeg version 0.6.5, Copyright (c) 2000-2010 the FFmpeg developers" 
  
  [1]=> string(74) " built on Jan 29 2012 23:55:02 with gcc 4.1.2 20080704 (Red Hat 4.1.2-51)" [2]=> 
  
  string(649) " configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 
  
  --mandir=/usr/share/man --incdir=/usr/include --disable-avisynth --extra-cflags='-O2 -g -pipe 
  
  -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 
  
  -mtune=generic -fPIC' --enable-avfilter --enable-avfilter-lavf --enable-libdirac --enable-libfaac 
  
  --enable-libfaad --enable-libfaadbin --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb 
  
  --enable-libopencore-amrwb --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc 
  
  --enable-pthreads --enable-shared --enable-swscale --enable-vdpau --enable-version3 
  
  --enable-x11grab" [3]=> string(35) " libavutil 50.15. 1 / 50.15. 1" [4]=> string(35) " 
  
  libavcodec 52.72. 2 / 52.72. 2" [5]=> string(35) " libavformat 52.64. 2 / 52.64. 2" 
  
  [6]=> string(35) " libavdevice 52. 2. 0 / 52. 2. 0" [7]=> string(35) " libavfilter 1.19. 0 / 1.19. 0" [8]=> 
  
  string(35) " libswscale 0.11. 0 / 0.11. 0" [9]=> string(35) " libpostproc 51. 2. 0 / 51. 2. 0" [10]=> 
  
  string(52) "Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'eliza.mp4':" [11]=> string(11) " Metadata:" [12]=>
  
  string(26) " major_brand : mp42" [13]=> string(23) " minor_version : 0" [14]=> string(35) " compatible_brands: 
  
  mp42isomavc1" [15]=> string(48) " encoder : HandBrake 0.9.4 2009112300" [16]=> string(59) " Duration: 
  
  00:00:05.56, start: 0.000000, bitrate: 551 kb/s" [17]=> string(94) " Stream #0.0(und): Video: h264, 
  
  yuv420p, 560x320, 465 kb/s, 30 fps, 30 tbr, 90k tbn, 60 tbc" [18]=> string(62) " Stream #0.1(eng): 
  
  Audio: aac, 48000 Hz, mono, s16, 83 kb/s" [19]=> string(72) "[webm @ 0x7200a0]Only VP8 video and 
  
  Vorbis audio are supported for WebM." [20]=> string(33) "Output #0, webm, to 'video.webm':" 
  
  [21]=> string(11) " Metadata:" [22]=> string(33) " encoder : Lavf52.64.2" [23]=> string(89) " 
  
  Stream #0.0(und): Video: libx264, yuv420p, 560x320, q=2-31, 465 kb/s, 90k tbn, 30 tbc" [24]=> 
  
  string(61) " Stream #0.1(eng): Audio: libfaac, 48000 Hz, mono, 83 kb/s" [25]=> string(15) 
  
  "Stream mapping:" [26]=> string(21) " Stream #0.0 -> #0.0" [27]=> string(21) " Stream #0.1 -> 
  
  #0.1" [28]=> string(72) "Could not write header for output file #0 (incorrect codec parameters ?)" } 

• ffmpeg 4.3 build failure on Mac OS 10.12.6

  3 août 2020, par yay nay

  I have, by mistake, aborted the install of svtplay-dl via homebrew, while the gcc dependency was installing.
I did the "brew cleanup", after which the ffmpeg simply dissappeared from the command line.

  


  I have reinstalled the gcc to the latest available version (via homebrew) only to find the same error several times :

  


  enter code here"==> Installing dependencies for homebrew-ffmpeg/ffmpeg/ffmpeg: icu4c and x264


  


  ==> Installing homebrew-ffmpeg/ffmpeg/ffmpeg dependency : icu4c&#xA;==> ./configure —prefix=/usr/local/Cellar/icu4c/67.1 —disable-samples —disable-tests —enable-static —w&#xA;==> make&#xA;Last 15 lines from /Users/sejo/Library/Logs/Homebrew/icu4c/02.make :&#xA;./formatted_string_builder.h:227:9 : note : subexpression not valid in a constant expression&#xA;U_ASSERT(category <= 0xf),&#xA;^&#xA;../common/uassert.h:35:26 : note : expanded from macro 'U_ASSERT'&#xA;"#" define U_ASSERT(exp) void()&#xA;^&#xA;./formatted_string_builder.h:240:64 : note : in call to 'Field(0, 1)'&#xA;constexpr FormattedStringBuilder::Field kGeneralNumericField = UFIELD_CATEGORY_UNDEFINED, 1 ;&#xA;^&#xA;3 errors generated.&#xA;*** Failed compilation command follows : ----------------------------------------------------------&#xA;clang++ -DU_ATTRIBUTE_DEPRECATED= -DU_I18N_IMPLEMENTATION -DU_HAVE_STRTOD_L=1 -DU_HAVE_XLOCALE_H=1 -DU_HAVE_STRING_VIEW=1 -I. -I../common -O2 -W -Wall -pedantic -Wpointer-arith -Wwrite-strings -Wno-long-long -std=c++11 -Qunused-arguments -Wno-parentheses-equality -Wglobal-constructors -fvisibility=hidden -fno-common -c -MMD -MT numfmt.d numfmt.o numfmt.ao -o numfmt.ao numfmt.cpp&#xA;--- ( rebuild with "/Library/Developer/CommandLineTools/usr/bin/make VERBOSE=1 all" to show all parameters ) --------&#xA;make[1] : *** [numfmt.ao] Error 1&#xA;make : *** [all-recursive] Error 2

  &#xA;

  Do not report this issue to Homebrew/brew or Homebrew/core !

  &#xA;

  Error : You are using macOS 10.12.&#xA;We (and Apple) do not provide support for this old version.&#xA;You will encounter build failures with some formulae.&#xA;Please create pull requests instead of asking for help on Homebrew's GitHub,&#xA;Discourse, Twitter or IRC. You are responsible for resolving any issues you&#xA;experience while you are running this old version."

  &#xA;

  The previous version of gcc was 4.2.2, installed with -libfdk (which I really needed) and it worked without any problem.

  &#xA;

  Is there any solution to this (it seems) newly aroused issue with ffmpeg with homebrew on Mac OS 10.12 ?

  &#xA;

• Failed to capture a avi file using opencv

  30 avril 2017, par Wei

  I am quite new to c++ compilation. I am trying to work on a simple problem using opencv where I read a video file and display it.

  My code looks like :

  #include <opencv></opencv>cv.h>
  
  #include <opencv></opencv>highgui.h>
  
  #include "opencv2/opencv.hpp"
  
  #include <opencv2></opencv2>core/core.hpp>
  
  #include <opencv2></opencv2>highgui/highgui.hpp>
  
  
  
  
  
  #include 
  
  #include 
  
  
  
  #include <algorithm>
  
  #include 
  
  #include 
  
  #include 
  
  #include <fstream>
  
  #include <iostream>
  
  #include <vector>
  
  #include <list>
  
  #include <string>
  
  
  
  
  
  using namespace cv;
  
  
  
  IplImage* image = 0; 
  
  IplImage* prev_image = 0;
  
  
  
  int show = 1; 
  
  
  
  int main( int argc, char** argv )
  
  {
  
      int frameNum = 0;
  
  
  
      char* video = argv[1];
  
      VideoCapture capture(video);
  
  
  
      if( !capture.isOpened() ) { 
  
          printf( "Could not initialize capturing..\n" );
  
          return -1;
  
      }
  
  
  
      if( show == 1 )
  
          cvNamedWindow( "Video", 0 );
  
  
  
      while( true ) {
  
          IplImage* frame = 0;
  
          int i, j, c;
  
  
  
          // get a new frame
  
          //frame = cvQueryFrame( capture );
  
          Mat mat_img;
  
          capture >> mat_img;
  
          IplImage frame1 = mat_img.operator IplImage();
  
          frame = &amp;frame1;
  
          if( !frame )
  
              break;
  
  
  
          if( !image ) {
  
              image =  cvCreateImage( cvSize(frame->width,frame->height), 8, 3 );
  
              image->origin = frame->origin;
  
          }
  
  
  
          cvCopy( frame, image, 0 );
  
  
  
          if( show == 1 ) {
  
              cvShowImage( "Video", image);
  
              c = cvWaitKey(3);
  
              if((char)c == 27) break;
  
          }
  
  
  
          std::cerr &lt;&lt; "The " &lt;&lt; frameNum &lt;&lt; "-th frame" &lt;&lt; std::endl;
  
          frameNum++;
  
      }
  
  
  
      if( show == 1 )
  
          cvDestroyWindow("Video");
  
  
  
      return 0;
  
  }
  
  </string></list></vector></iostream></fstream></algorithm>

  Then I compile it like :

  g++ test.cpp -o Video -pipe -D __STDC_CONSTANT_MACROS -D STD=std -Wall -I. -I/usr/local/ -O3 -DNDEBUG -ggdb -L/usr/local/ -lopencv_core -lopencv_highgui -lopencv_video -lopencv_imgproc -lavformat -lavdevice -lavutil -lavcodec -lswscale

  Compilation works fine and no errors returned.

  However, when I was running it, I got :

  (Video:5651): GLib-GObject-CRITICAL **: g_object_set: assertion 'G_IS_OBJECT (object)' failed
  
  Could not initialize capturing..

  Some other information :
  1. I test my opencv and ffmpeg by running simple examples, which work well.
  2. I can stream frames from my camera and display it using opencv.

  Anyone has idea of what causes this ?

  Any idea is appreciated.