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• Converting files from a C++ base [closed]

  31 mars 2014, par Trevader24135

  I'm looking for a way to use ffmpeg from a program in C++ to allow super easy and accurate converting by typing only a couple of things in. I have everything all working, except the most important part. The actual converter. Here's my code so far - how do I use ffmpeg in C++ ?

  #include <iostream>
  
  #include <mp>
  
  
  
  using namespace std;
  
  
  
  int main()
  
  {
  
      std::string formatIn;
  
      std::string FormatOut;
  
      std::string confirm;
  
      cout &lt;&lt; "select format that file is currently in: mp3, gp3, mp4, flv" &lt;&lt; endl;
  
      cin >> formatIn;
  
      cout &lt;&lt; "original format = " &lt;&lt; formatIn &lt;&lt; endl;
  
      cout &lt;&lt; "choose your target format: mp3, gp3, mp4, flv" &lt;&lt; endl;
  
      cin >> FormatOut;
  
      cout &lt;&lt; "selected format = " &lt;&lt; FormatOut &lt;&lt; endl;
  
      cout &lt;&lt; "proceed? ";
  
      cin >> confirm;
  
      if(confirm == "yes") {
  
          cout &lt;&lt; "proceeding with operation:" &lt;&lt; endl;
  
          func convert();
  
      }
  
      else {
  
          if(confirm == "no") {
  
              cout &lt;&lt; "canceling,,," &lt;&lt; endl;
  
          }
  
      }
  
  }
  
  
  
  int convert()
  
  {
  
  
  
  }
  
  </mp></iostream>

• ffmpeg taking so much time to extract frames from mpeg-ts file

  19 septembre 2016, par Syed Azaruddin

  I got a problem from one mpeg-ts video. Actually it was created by some one else and even I don’t know how they are created. The problem is that, ffmpeg is taking so much time to decode all frames from the mpeg-ts video. The command I used for this operation is...

  ffmpeg -i shame-run.mov -r 24/1 test/output%d.jpg

  Actually my application is integrated with ffmpeg v2.1.1. and I had a code for detecting black frames in a mpeg-ts video. Here, my code is not able to detect all black frames from ffmpeg for this mpeg-ts video. So, I taken standalone ffmpeg of same version as mentioned above and decoded standalone. But, it is taking so much time i.e., it is taken half an hour for decoding 1 min duration video.

  So, is there any reason is that ffmpeg not able to extract as fast as required, and is there any reason that video got some errors.

• How to tell if ffmpeg errored or not ?

  23 décembre 2023, par dvdmn

  The Situation :
I'm using ffmpeg (via .net) to save video files. I can get the output from ffmpeg but I dont know how can I customize the output to have better result.

  


  My Problem :
My problem is, there is no certain difference between successful and failed operation.

  


  


  last line of success :

  


  video:1006kB audio:134kB subtitle:0 global headers:0kB muxing overhead 0.943510%

  


  last lines from fails

  


  c :\x\test-9-8/30/2012-9:29:56-AM.mp4 : Invalid argument

  


  rtmp ://cdn.tv/cdn-live39/definst/stream01 : Unknown error occurred

  


  


  My Question :
Is there an option (or command line parameter) to add some sort of return code (200 : success, 500 : error, etc)

  


  Thanks !

  


  PS : I saw this topic How to tell if ffmpeg errored ? but there is no number before/after last line. I think the last version doesnt have number anymore.