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• FFmpeg build error pkg-config can't find x265 /usr/bin/ld : cannot find -lnuma : No such file or directory

  1er janvier 2023, par slyfox1186

  I am trying to build ffmpeg with custom libraries from source code.

  


  Every package in my script builds as it should but when it gets time to run the ffmpeg build using all of the packages it fails with a weird error code shown at the bottom of the ffmpeg build log.

  


  BEGIN /home/jman/tmp/ffconf.JouXp6kg/test.c
    1   #include 
    2   #include 
    3   long check_x265_api_get(void) { return (long) x265_api_get; }
    4   int main(void) { int ret = 0;
    5    ret |= ((intptr_t)check_x265_api_get) & 0xFFFF;
    6   return ret; }
END /home/jman/tmp/ffconf.JouXp6kg/test.c
gcc -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -DPIC -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include/lilv-0 -I/usr/local/cuda/include -std=c11 -fomit-frame-pointer -fPIC -I/home/jman/Documents/ffmpeg-build/workspace/include -pthread -DLILV_STATIC -DSRATOM_STATIC -DSORD_STATIC -DSERD_STATIC -I/home/jman/Documents/ffmpeg-build/workspace/include/lilv-0 -I/home/jman/Documents/ffmpeg-build/workspace/include/sratom-0 -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include/sord-0 -I/home/jman/Documents/ffmpeg-build/workspace/include/serd-0 -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include/opus -I/home/jman/Documents/ffmpeg-build/workspace/include/opus -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include/srt -I/home/jman/Documents/ffmpeg-build/workspace/include/svt-av1 -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include -L/usr/lib/x86_64-linux-gnu -c -o /home/jman/tmp/ffconf.JouXp6kg/test.o /home/jman/tmp/ffconf.JouXp6kg/test.c
gcc -L/home/jman/Documents/ffmpeg-build/workspace/lib -L/usr/local/cuda/lib64 -Wl,--as-needed -Wl,-z,noexecstack -L/usr/lib/x86_64-linux-gnu -o /home/jman/tmp/ffconf.JouXp6kg/test /home/jman/tmp/ffconf.JouXp6kg/test.o -lx265 -lstdc++ -lm -lgcc_s -lgcc -lgcc_s -lgcc -lrt -ldl -lnuma -ldl -lpthread -lm -lz
/usr/bin/ld: cannot find -lnuma: No such file or directory
collect2: error: ld returned 1 exit status
ERROR: x265 not found using pkg-config


  


  Does anyone know what this -lnuma is referring to ?

  


  I had no issues just a few days ago when I last ran my build script and then all of a sudden this issue appeared.

  


  This is my build script in its entirety : FFmpeg-build.sh

  


  Update : Per Allan Winds' instructions here is the output of :

  


  find /usr/lib -name libnuma\* -ls

  


    4987897     48 -rw-r--r--   1 root     root        48152 Mar 24  2022 /usr/lib/x86_64-linux-gnu/libnuma.so.1.0.0
  4992286     76 -rw-r--r--   1 root     root        77086 Mar 24  2022 /usr/lib/x86_64-linux-gnu/libnuma.a
  4987896      0 lrwxrwxrwx   1 root     root           16 Dec 29 12:03 /usr/lib/x86_64-linux-gnu/libnuma.so.1 -> libnuma.so.1.0.0
  4992287      0 lrwxrwxrwx   1 root     root           16 Mar 24  2022 /usr/lib/x86_64-linux-gnu/libnuma.so -> libnuma.so.1.0.0


  


• FFMPEG - Palettegen for animations is not working

  18 juillet 2018, par deanhodges

  I have a script taken from the correct answer at https://superuser.com/questions/1002562/convert-multiple-images-to-a-gif-with-cross-dissolve, but I am getting no results.

  Even copying the code word for word does not work for me.

  However, if I run $ffmpeg = shell_exec("ffmpeg -i images/image001.jpg -vf palettegen palette_test.png"); on a single image, it works fine. But because I need it for an animation, I need to create a pallete for all images.

  Unless of course, on each image in the GIF sequence I can load a new palette ?

  $q = "ffmpeg -f image2 -framerate 0.5 -i ../view/client/files/".$dir."/%*.jpg -i palettePro.png -lavfi paletteuse -y .." . $save_path . '/' . $filename . " -report";

• how the packuswb instruction works ? (in low level bit operation)

  17 avril 2019, par MaikonNascimento

  Studying ffmpeg convertion from yuv to rgb , I came across the equation being implemented in assembly, yuv2rgb_template.c located in ffmpeg/libswscale/x86.

  I want to know how the instruction packuswb works ? Google says it :

  Converts 4 signed word integers from mm and 4 signed word integers from mm/m64 into 8 unsigned byte integers in mm using unsigned saturation.

      DEST[7:0] ← SaturateSignedWordToUnsignedByte DEST[15:0];
  
      DEST[15:8] ← SaturateSignedWordToUnsignedByte DEST[31:16];
  
      DEST[23:16] ← SaturateSignedWordToUnsignedByte DEST[47:32];
  
      DEST[31:24] ← SaturateSignedWordToUnsignedByte DEST[63:48];
  
      DEST[39:32] ← SaturateSignedWordToUnsignedByte SRC[15:0];
  
      DEST[47:40] ← SaturateSignedWordToUnsignedByte SRC[31:16];
  
      DEST[55:48] ← SaturateSignedWordToUnsignedByte SRC[47:32];
  
      DEST[63:56] ← SaturateSignedWordToUnsignedByte SRC[63:48];

  Since I dont know Assembly x86, it is even hard to simulate it or debug the current code.

  I want to know how they fit 16 bits in 8 bits ?