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• Struggling to add subtitles to a video using FFMPEG and C#

  19 mars 2024, par MattHodson

  I'm trying to add subtitles to my videos, 100% with code using FFMPEG and C#.

  


  But I'm getting the following error :

  


  


  ffmpeg version 2024-02-04-git-7375a6ca7b-essentials_build-www.gyan.dev Copyright (c) 2000-2024 the FFmpeg developers
built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
configuration : —enable-gpl —enable-version3 —enable-static —pkg-config=pkgconf —disable-w32threads —disable-autodetect —enable-fontconfig —enable-iconv —enable-gnutls —enable-libxml2 —enable-gmp —enable-bzlib —enable-lzma —enable-zlib —enable-libsrt —enable-libssh —enable-libzmq —enable-avisynth —enable-sdl2 —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxvid —enable-libaom —enable-libopenjpeg —enable-libvpx —enable-mediafoundation —enable-libass —enable-libfreetype —enable-libfribidi —enable-libharfbuzz —enable-libvidstab —enable-libvmaf —enable-libzimg —enable-amf —enable-cuda-llvm —enable-cuvid —enable-ffnvcodec —enable-nvdec —enable-nvenc —enable-dxva2 —enable-d3d11va —enable-libvpl —enable-libgme —enable-libopenmpt —enable-libopencore-amrwb —enable-libmp3lame —enable-libtheora —enable-libvo-amrwbenc —enable-libgsm —enable-libopencore-amrnb —enable-libopus —enable-libspeex —enable-libvorbis —enable-librubberband
libavutil 58. 36.101 / 58. 36.101
libavcodec 60. 38.100 / 60. 38.100
libavformat 60. 20.100 / 60. 20.100
libavdevice 60. 4.100 / 60. 4.100
libavfilter 9. 17.100 / 9. 17.100
libswscale 7. 6.100 / 7. 6.100
libswresample 4. 13.100 / 4. 13.100
libpostproc 57. 4.100 / 57. 4.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C :\Users\Gamer\source\repos\XXXX\bin\Debug\net8.0\ce31c8ab-4b53-44e8-9e25-d02ba5466144\output.mp4' :
Metadata :
major_brand : isom
minor_version : 512
compatible_brands : isomiso2avc1mp41
encoder : Lavf60.20.100
Duration : 00:03:18.84, start : 0.000000, bitrate : 101 kb/s
Stream #0:00x1 : Video : h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 1024x1792, 26 kb/s, 1 fps, 1 tbr, 16384 tbn (default)
Metadata :
handler_name : VideoHandler
vendor_id : [0][0][0][0]
encoder : Lavc60.38.100 libx264
Stream #0:10x2 : Audio : aac (LC) (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 74 kb/s (default)
Metadata :
handler_name : SoundHandler
vendor_id : [0][0][0][0]
[Parsed_subtitles_0 @ 000001a87404e3c0] Unable to parse option value "UsersGamersourcereposXXXXbinDebugnet8.0ce31c8ab-4b53-44e8-9e25-d02ba5466144output.srt" as image size
Error applying option 'original_size' to filter 'subtitles' : Invalid argument
[vost#0:0/libx264 @ 000001a874064a40] Error initializing a simple filtergraph
Error opening output file C :\Users\Gamer\source\repos\XXXX\bin\Debug\net8.0\ce31c8ab-4b53-44e8-9e25-d02ba5466144\videoWithSubtitles.mp4.
Error opening output files : Invalid argument

  


  


  It seems to be something related to paths, but I have tried EVERYTHING in my knowledge to fix this, still no luck... spent the majority of the day on it, no luck... so StackOverflow here I come !

  


  My code :

  


     public static async Task AddSubtitlesToVideoAsync(string videoPath, string subtitlesPath, string outputPath)
    {
        if (File.Exists(videoPath) && File.Exists(subtitlesPath))
        {
            //string subtitlesPathForwardSlashes = subtitlesPath.Replace("\\", "/");
            //string ffmpegCommand = $"-i \"{videoPath}\" -filter_complex \"subtitles='{subtitlesPathForwardSlashes}'\" \"{outputPath}\"";
            //string ffmpegCommand = $"-i \"{videoPath}\" -vf subtitles={subtitlesPathForwardSlashes} \"{outputPath}\"";
            //string ffmpegCommand = $"-i \"{videoPath}\" -vf subtitles=\"{subtitlesPath}\" \"{outputPath}\"";
            string subtitlesPathEscaped = subtitlesPath.Replace("\\", "\\\\");
            string ffmpegCommand = $"-i \"{videoPath}\" -vf subtitles=\"{subtitlesPathEscaped}\" \"{outputPath}\"";


            //output    -i C:\Users\Gamer\source\repos\XXXX\bin\Debug\net8.0\d745a08d-b932-47ac-a81c-45e9483590a7\output.mp4 -vf subtitles="C:/Users/Gamer/source/repos/XXXX/bin/Debug/net8.0/d745a08d-b932-47ac-a81c-45e9483590a7/generatedSubtitles.srt" C:\Users\Gamer\source\repos\XXXX\bin\Debug\net8.0\d745a08d-b932-47ac-a81c-45e9483590a7\videoWithSubtitles.mp4
            await ExecuteSubtitleCommandAsync(ffmpegCommand);
        }
        else
        {
            Console.WriteLine("Files can't be found.");
        }
    }

    public static async Task ExecuteSubtitleCommandAsync(string arguments)
    {
        string ffmpegExecutablePath = ffmpegRoot;
        var startInfo = new ProcessStartInfo(ffmpegExecutablePath, arguments)
        {
            CreateNoWindow = true,
            UseShellExecute = false,
            RedirectStandardOutput = true,
            RedirectStandardError = true
        };

        using (var process = new Process { StartInfo = startInfo })
        {
            process.EnableRaisingEvents = true; // Enable the Exited event.
            process.Exited += (sender, e) =>
            {
                Console.WriteLine($"FFmpeg process exited with code {process.ExitCode}.");
            };

            try
            {
                process.Start();
                // Asynchronously read the standard output and standard error of the process
                var outputTask = process.StandardOutput.ReadToEndAsync();
                var errorTask = process.StandardError.ReadToEndAsync();
                // Wait for both asynchronous tasks to complete
                await Task.WhenAll(outputTask, errorTask);

                var output = await outputTask;
                var error = await errorTask;

                if (!string.IsNullOrEmpty(error))
                {
                    Console.WriteLine("FFmpeg error: " + error);
                }
                else
                {
                    Console.WriteLine("FFmpeg process completed successfully.");
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("Error: " + ex.Message);
            }
            finally
            {
                // Wait for the process to exit if it hasn't already.
                if (!process.HasExited)
                {
                    process.WaitForExit();
                }
            }
        }
    }


  


• Apache Tika 2.0.9 programm ffmpeg and exiftool not found ?

  6 avril 2024, par mj44

  I use an JavaFX Maven Project to use Apache Tika Version 2.9.0.
The Java Test program will be finished and all methods that I create will done right.
I have in the log file a lot of DEBUG errors and Idon't know why ?
I habe spent many hours to clear the problem.

  


  Here's an excerpt of the logfile

  


  2024-04-03 14:56:12 [main] DEBUG org.apache.tika.parser.external.ExternalParser - exception trying to run  ffmpeg
java.io.IOException: Cannot run program "ffmpeg": CreateProcess error=2, Das System kann die angegebene Datei nicht finden
    at java.lang.ProcessBuilder.start(ProcessBuilder.java:1140) ~[?:?]
    at java.lang.ProcessBuilder.start(ProcessBuilder.java:1074) ~[?:?]
...
2024-04-03 14:56:12 [main] DEBUG org.apache.tika.parser.external.ExternalParser - exception trying to run  exiftool
java.io.IOException: Cannot run program "exiftool": CreateProcess error=2, Das System kann die angegebene Datei nicht finden
    at java.lang.ProcessBuilder.start(ProcessBuilder.java:1140) ~[?:?]
    at java.lang.ProcessBuilder.start(ProcessBuilder.java:1074) ~[?:?]
...



  


  The message says that ffmpeg and exiftool are not found.

  


  This is my tika-config.xml

  


  &lt;?xml version="1.0" encoding="UTF-8"?>&#xA;<properties>&#xA;    <parsers>&#xA;        <parser class="org.apache.tika.parser.DefaultParser"></parser>&#xA;        <parser class="org.apache.tika.parser.pdf.PDFParser"></parser>&#xA;        &#xA;        <parser class="org.apache.tika.parser.external.ExternalParser">&#xA;            <params>&#xA;                true&#xA;                &#xA;                "D:\Tools\ffmpeg-6.1.1\bin\ffmpeg.exe"&#xA;            </params>&#xA;        </parser>&#xA;        &#xA;        <parser class="org.apache.tika.parser.external.ExternalParser">&#xA;            <params>&#xA;                true&#xA;                &#xA;                "D:\Tools\exiftool.exe"&#xA;            </params>&#xA;        </parser>&#xA;    </parsers>&#xA;    <detector>&#xA;        <detector class="org.apache.tika.detect.DefaultDetector"></detector>&#xA;    </detector>&#xA;</properties>&#xA;

  


  I tested the path of the programms in a console ant it worked fine ?
I don't know what I can do now ?

  


  Thanks for Help

  


  I have downloaded new copies of the ffmpeg and exiftool and installed them.
I tested it in a console to run and both tools work fine.
I tested the permissions, no problems with permissions
I tested that the tika-config.xml will be loaded, it loaded.

  


• Flutter error in Ffmpeg, "Unhandled Exception : ProcessException : No such file or directory" in macOS desktop version

  19 avril 2024, par pratik vekariya

  I'm trying video trim video using ffmpeg, for macOS desktop application.

  


  I have downloaded ffmpeg from here for macOS.

  


  Here is my code

  


      String mainPath = &#x27;Users/apple/Workspace/User/2024/Project/videoapp/build/macos/Build/Products/Debug/&#x27;;&#xA;        mainPath = mainPath.substring(0, mainPath.lastIndexOf("/"));&#xA;    &#xA;                  Directory directoryExe3 = Directory("$mainPath");&#xA;                  var dbPath = path.join(directoryExe3.path,&#xA;                      "App.framework/Resources/flutter_assets/assets/ffmpeg/ffmpegmacos");&#xA;//here in "Products/Debug/" folder desktop app will generate&#xA;&#xA;//directoryExe3 path will be, Users/apple/Workspace/User/2024/Project/videoapp/build/macos/Build/Products/Debug&#xA;&#xA;//and dbPath will be, Users/apple/Workspace/User/2024/Project/videoapp/build/macos/Build/Products/Debug/App.framework/Resources/flutter_assets/assets/ffmpeg/ffmpegmacos&#xA;&#xA;//so when app will run it can access it from this path&#xA;&#xA;//executable code, command for ffmpeg&#xA;&#xA;String transpose_str &#x2B;= "crop=" &#x2B;&#xA;              out_w.toInt().toString() &#x2B;&#xA;              ":" &#x2B;&#xA;              out_h.toInt().toString() &#x2B;&#xA;              ":" &#x2B;&#xA;              x!.toInt().toString() &#x2B;&#xA;              ":" &#x2B;&#xA;              y!.toInt().toString() &#x2B;&#xA;              ",";&#xA;          transpose_str &#x2B;= "scale=960:192";&#xA;&#xA;Future<processresult> result_ = Process.run(dbPath, [&#xA;                "-ss",&#xA;                timestamp,&#xA;                "-i",&#xA;                inputFilePath,&#xA;                "-t",&#xA;                endTime,&#xA;                "-vf",&#xA;                transpose_str,&#xA;                "-an",&#xA;                "./temp.mp4",&#xA;              ]); &#xA;</processresult>

  


  Now when I run this in macOS desktop verison, it gives me error at Process.run that in dbPath, Unhandled Exception : ProcessException : No such file or directory.

  


  Any help would be appreciate !

  


  when i run this as desktop version it should get file from assets.