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• libavcodec.so.58 not found when running software compiled with opencv

  22 avril, par Abinaya

  I am using ubuntu 22.04. Now every time I try to run software compiled with Opencv, I get the following error :

  


  `libavcodec.so.58 => not found
 libavformat.so.58 => not found
 libavutil.so.56 => not found
 libswscale.so.5 => not found
`


  


  Looking around /lib/x86_64-linux-gnu/, I can find libavcodec.so.59, but not libavcodec.so.58.

  


  When trying to run sudo apt-get install libavcodec58, I get :

  


  Package 'libavcodec58' has no installation candidate

  


  I've scoured the internet in search of an answer, but could not find anything at this point. Any help with solving this problem will be very much appreciated.

  


  I have tried to recreate symbolic link with
'ls -l libavcodec.so.59'
1 root root 23 Aug 10 2024 libavcodec.so.59 ->libavcodec.so.59.37.100`

  


  'dconfig -vl libavcodec.so.59.37.100'
libavcodec.so.59 -> libavcodec.so.59.37.100`

  


  But I am still struck

  


• avutil : Fix linking x86 asm constants with Clang in MSVC mode

  12 juin, par Martin Storsjö

  avutil : Fix linking x86 asm constants with Clang in MSVC mode
  This fixes building with Clang in MSVC mode, for x86, which was
  
  broken in 6e49b8699657b808b7dc80033f2c3f2d0e029fa3 (in Nov 2024) ;
  
  previously it failed with undefined symbols for the constants
  
  defined with DECLARE_ASM_CONST, accessed via inline assembly.
  Before 57861911a34e1c33796be97f2b2f44e05fffd647, there was an
  
      #elif defined(__GNUC__) || defined(__clang__)
  
  case before the
  
      #elif defined(_MSC_VER)
  
  case for defining DECLARE_ASM_CONST, which included av_used.
  
  (This case included the explicit "defined(__clang__)" since
  
  f637046d3134a331e4b5a7243ac3dfb92735b8a5.)
  After 57861911a34e1c33796be97f2b2f44e05fffd647, it used the
  
  generic definition of DECLARE_ASM_CONST that also included
  
  av_used - which also worked for Clang in MSVC mode. But after
  
  6e49b8699657b808b7dc80033f2c3f2d0e029fa3, Clang in MSVC mode
  
  ended up using the MSVC specific variant which lacked the
  
  av_used declaration, causing linker errors due to undefined
  
  symbols.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DH] libavutil/mem_internal.h

• ffmpeg fialing with "could not find coded parameters"

  21 octobre 2024, par Angelo

  running ffmpeg -i in a C# console app using Process, for certain files, the process gets stuck and runs forever

  


          var oInfo = new ProcessStartInfo("ffmpeg.exe", "-i 176d2819-f1da-44eb-b33b-94eb1448194b.mov");
        oInfo.UseShellExecute = false;
        oInfo.CreateNoWindow = true;
        oInfo.RedirectStandardOutput = true;
        oInfo.RedirectStandardError = true;

        string output = string.Empty;
        StreamReader srOutput = null;

            //run the process
            Process proc = Process.Start(oInfo);
            proc.WaitForExit();
            srOutput = proc.StandardError;
            output = srOutput.ReadToEnd();
            proc.Close();


  


  running from command line

  


  ffmpeg.exe -i 176d2819-f1da-44eb-b33b-94eb1448194b.mov, getting an error as included in the below output

  


  could not find codec parameters for stream 1 (Audio : none (apac / 0x63617061), 48000 Hz, 4 channels, 382 kb/s) : unknown codec
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
[aist#0:1/none @ 0000029b0e1b0040] Guessed Channel Layout : 4.0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '176d2819-f1da-44eb-b33b-94eb1448194b.mov'

  


  ffmpeg version N-117538-g9ce63e65d6-20241015 Copyright (c) 2000-2024 the FFmpeg developers
  built with gcc 14.2.0 (crosstool-NG 1.26.0.120_4d36f27)
  configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --disable-w32threads --enable-pthreads --enable-iconv --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-libxml2 --enable-lzma --enable-fontconfig --enable-libharfbuzz --enable-libvorbis --enable-opencl --disable-libpulse --enable-libvmaf --disable-libxcb --disable-xlib --enable-amf --enable-libaom --enable-libaribb24 --enable-avisynth --enable-chromaprint --enable-libdav1d --enable-libdavs2 --enable-libdvdread --enable-libdvdnav --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libkvazaar --enable-libaribcaption --enable-libass --enable-libbluray --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librist --enable-libssh --enable-libtheora --enable-libvpx --enable-libwebp --enable-libzmq --enable-lv2 --enable-libvpl --enable-openal --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --disable-libdrm --enable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --enable-libvvenc --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-libs=-lgomp --extra-ldflags=-pthread --extra-ldexeflags= --cc=x86_64-w64-mingw32-gcc --cxx=x86_64-w64-mingw32-g++ --ar=x86_64-w64-mingw32-gcc-ar --ranlib=x86_64-w64-mingw32-gcc-ranlib --nm=x86_64-w64-mingw32-gcc-nm --extra-version=20241015
  libavutil      59. 43.100 / 59. 43.100
  libavcodec     61. 22.100 / 61. 22.100
  libavformat    61.  9.100 / 61.  9.100
  libavdevice    61.  4.100 / 61.  4.100
  libavfilter    10.  6.100 / 10.  6.100
  libswscale      8.  6.100 /  8.  6.100
  libswresample   5.  4.100 /  5.  4.100
  libpostproc    58.  4.100 / 58.  4.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001b447c84e40] Could not find codec parameters for stream 1 (Audio: none (apac / 0x63617061), 48000 Hz, 4 channels, 382 kb/s): unknown codec
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
[aist#0:1/none @ 000001b44a6bf880] Guessed Channel Layout: 4.0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '176d2819-f1da-44eb-b33b-94eb1448194b.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 0
    compatible_brands: qt
    creation_time   : 2024-10-14T07:34:17.000000Z
    com.apple.quicktime.full-frame-rate-playback-intent: 0
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: iPhone 16 Pro Max
    com.apple.quicktime.software: 18.0.1
    com.apple.quicktime.creationdate: 2024-10-14T16:18:36+1100
    com.apple.photos.originating.signature: AQMNJRMQrKK7im+Kjhixx6TqQyYm
  Duration: 00:00:32.60, start: 0.000000, bitrate: 15064 kb/s
  Stream #0:0[0x1](und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 130 kb/s (default)
    Metadata:
      creation_time   : 2024-10-14T07:34:17.000000Z
      handler_name    : Core Media Audio
      vendor_id       : [0][0][0][0]
  Stream #0:1[0x2](und): Audio: none (apac / 0x63617061), 48000 Hz, 4.0, 382 kb/s
    Metadata:
      creation_time   : 2024-10-14T07:34:17.000000Z
      handler_name    : Core Media Audio
      vendor_id       : [0][0][0][0]
  Stream #0:2[0x3](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1920x1080, 14464 kb/s, 30 fps, 30 tbr, 600 tbn (default)
    Metadata:
      creation_time   : 2024-10-14T07:34:17.000000Z
      handler_name    : Core Media Video
      vendor_id       : [0][0][0][0]
      encoder         : H.264
  Stream #0:3[0x4](und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
      creation_time   : 2024-10-14T07:34:17.000000Z
      handler_name    : Core Media Metadata
  Stream #0:4[0x5](und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
      creation_time   : 2024-10-14T07:34:17.000000Z
      handler_name    : Core Media Metadata
  Stream #0:5[0x6](und): Data: none (mebx / 0x7862656D), 21 kb/s (default)
    Metadata:
      creation_time   : 2024-10-14T07:34:17.000000Z
      handler_name    : Core Media Metadata
  Stream #0:6[0x7](und): Data: none (mebx / 0x7862656D), 48 kb/s (default)
    Metadata:
      creation_time   : 2024-10-14T07:34:17.000000Z
      handler_name    : Core Media Metadata
  Stream #0:7[0x8](und): Data: none (mebx / 0x7862656D), 2 kb/s (default)
    Metadata:
      creation_time   : 2024-10-14T07:34:17.000000Z
      handler_name    : Core Media Metadata
  Stream #0:8[0x9](und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
      creation_time   : 2024-10-14T07:34:17.000000Z
      handler_name    : Core Media Metadata


  


  This error does not happen on all files but only on a handful of files.