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• Revision 30332 : On passe la génération de la file d’attente et donc des inserts en base ...

  29 juillet 2009, par kent1@… — Log

  On passe la génération de la file d’attente et donc des inserts en base dans l’action spipmotion_ajouter_file
  On ajoute un suffixe au nom de fichier -encoded pour éviter de boucler sur les encodages
  On clean aussi un chouilla

• avutil : remove deprecated FF_API_HDR_VIVID_THREE_SPLINE

  19 février, par James Almer

  avutil : remove deprecated FF_API_HDR_VIVID_THREE_SPLINE
  Deprecated since 2023-03-17.
  Signed-off-by : James Almer <jamrial@gmail.com>
  

  • [DH] libavcodec/dynamic_hdr_vivid.c
  • [DH] libavutil/hdr_dynamic_vivid_metadata.h
  • [DH] libavutil/version.h

• How to use ffmpeg on a stream input to extract frames

  21 juillet 2023, par Deepak Sharma

  I have tried piping the stream to a ffmpeg process for extracting the frames. It does process the small files and able to extract the frames successfully but for most of the files it throws error. The reference of the code I have used from this link- https://mathewsachin.github.io/blog/2017/07/28/ffmpeg-pipe-csharp.html
When I am running the below code

  


  `

  


      public static void RunFfmpeg()
    {
        
        //-framerate 20 -f rawvideo -pix_fmt rgb32 -video_size 1920x1080
        var inputArgs = "-i -";
        var outputArgs = "-ss 00:00 -t 20 -vf fps=5  $filename%03d.bmp";

        var process = new Process
        {
            StartInfo =
            {
                FileName = "ffmpeg",
                Arguments = $"{inputArgs} {outputArgs}",
                UseShellExecute = false,
                //CreateNoWindow = true,
                RedirectStandardInput = true,
                RedirectStandardOutput = true,
                WorkingDirectory = @"d:\ffmpegout"
            }
        };

        process.Start();

        var ffmpegIn = process.StandardInput.BaseStream;

        using (Stream contents = File.OpenRead("C:\\Desktop\\Videos\\B.mp4"))
        {
            contents.CopyTo(ffmpegIn);
        }

        // After you are done
        ffmpegIn.Flush();
        ffmpegIn.Close();

        // Make sure ffmpeg has finished the work
        process.WaitForExit();
    }`


  


  I am getting the below error

  


  ffmpeg version 2023-07-16-git-c541ecf0dc-full_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
configuration : —enable-gpl —enable-version3 —enable-static —disable-w32threads —disable-autodetect —enable-fontconfig —enable-iconv —enable-gnutls —enable-libxml2 —enable-gmp —enable-bzlib —enable-lzma —enable-libsnappy —enable-zlib —enable-librist —enable-libsrt —enable-libssh —enable-libzmq —enable-avisynth —enable-libbluray —enable-libcaca —enable-sdl2 —enable-libaribb24 —enable-libaribcaption —enable-libdav1d —enable-libdavs2 —enable-libuavs3d —enable-libzvbi —enable-librav1e —enable-libsvtav1 —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxavs2 —enable-libxvid —enable-libaom —enable-libjxl —enable-libopenjpeg —enable-libvpx —enable-mediafoundation —enable-libass —enable-frei0r —enable-libfreetype —enable-libfribidi —enable-libharfbuzz —enable-liblensfun —enable-libvidstab —enable-libvmaf —enable-libzimg —enable-amf —enable-cuda-llvm —enable-cuvid —enable-ffnvcodec —enable-nvdec —enable-nvenc —enable-d3d11va —enable-dxva2 —enable-libvpl —enable-libshaderc —enable-vulkan —enable-libplacebo —enable-opencl —enable-libcdio —enable-libgme —enable-libmodplug —enable-libopenmpt —enable-libopencore-amrwb —enable-libmp3lame —enable-libshine —enable-libtheora —enable-libtwolame —enable-libvo-amrwbenc —enable-libcodec2 —enable-libilbc —enable-libgsm —enable-libopencore-amrnb —enable-libopus —enable-libspeex —enable-libvorbis —enable-ladspa —enable-libbs2b —enable-libflite —enable-libmysofa —enable-librubberband —enable-libsoxr —enable-chromaprint
libavutil 58. 14.100 / 58. 14.100
libavcodec 60. 22.100 / 60. 22.100
libavformat 60. 10.100 / 60. 10.100
libavdevice 60. 2.101 / 60. 2.101
libavfilter 9. 8.102 / 9. 8.102
libswscale 7. 3.100 / 7. 3.100
libswresample 4. 11.100 / 4. 11.100
libpostproc 57. 2.100 / 57. 2.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000266a80179c0] Could not find codec parameters for stream 0 (Video : h264 (avc1 / 0x31637661), none(tv, bt709), 1280x720, 4023 kb/s) : unspecified pixel format
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'fd :' :
Metadata :
major_brand : isom
minor_version : 512
compatible_brands : isomiso2avc1mp41
encoder : Lavf58.76.100
Duration : 00:00:21.22, start : 0.000000, bitrate : N/A
Stream #0:00x1 : Video : h264 (avc1 / 0x31637661), none(tv, bt709), 1280x720, 4023 kb/s, SAR 1:1 DAR 16:9, 29.97 fps, 29.97 tbr, 30k tbn (default)
Metadata :
handler_name : VideoHandler
vendor_id : [0][0][0][0]
Stream mapping :
Stream #0:0 -> #0:0 (h264 (native) -> bmp (native))
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000266a80179c0] stream 0, offset 0xbb3a : partial file
Cannot determine format of input stream 0:0 after EOF
Error marking filters as finished
Conversion failed !

  


  I did check the metadata of the video is present in the start of the file before the mdat box.

  


  Looking to get some help to resolve this issue.