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• ffmpeg shared libraries setup on visual studio 2013

  19 décembre 2017, par Hyun Jung

  Setting up ffmpeg shared libraries that are downloaded from ffmpeg zenaroe (https://ffmpeg.zeranoe.com/builds/) for windows_64bit. The IDE is VS2013.

  I downloaded dev and shared build for windows 64bit.

  And followed steps like bellow but when building, linker error happens. The object file is created so compiling seems done. But there seems to be a problem finding referenced functions at the linking stage.

  1. Create win32 project and main.cpp
  2. Copy ffmpeg_dev’s include and lib folders to solution directory.
  3. Open project properties and add the include dir and the lib dir.
  4. Add lib names to linker input.

  5. Build

     main.cpp

     extern "C"{
     
     #include 
     
     }
     
     int main(void){
     
     
     
         av_register_all();
     
     
     
         return 0;
     
     }

  The linker error is :

  LNK2019 unresloved external symbol _av_register_all referenced in function _main.

• Split video in specific number of frame with ffmpeg in c#

  1er août 2017, par Loic Bch

  I want to split a video into a specific number of image :
  I’m using ffmpeg/EmguCV in C#.

  I capture a video from a webcam and i need to split the video into 59 images. i’m using -i command with ffmpeg to split my video into a number of images.

  The problem is that the number of images i get at the end is different at each capture because the duration of the video is not exactly the same due to fps drop.

  So if anyone know if it’s possible to specify that i want the video to be equally cut into 59 images. (Or any other idea to get what i want)

  (at the moment i’m taking the number of images i get from the cut and divide it by 59 then i’m taking one image in "the result" but i’ts not precise at all because if i get a decimal number im losing or adding images)

• Split video in specific number of frame with ffmpeg in c#

  30 avril 2017, par Loic Bch

  I want to split a video into a specific number of image :
  I’m using ffmpeg/EmguCV in C#.

  I capture a video from a webcam and i need to split the video into 59 images. i’m using -i command with ffmpeg to split my video into a number of images.

  The problem is that the number of images i get at the end is different at each capture because the duration of the video is not exactly the same due to fps drop.

  So if anyone know if it’s possible to specify that i want the video to be equally cut into 59 images. (Or any other idea to get what i want)

  (at the moment i’m taking the number of images i get from the cut and divide it by 59 then i’m taking one image in "the result" but i’ts not precise at all because if i get a decimal number im losing or adding images)