在ASP. NET Core中使用FFMPEG从视频创建缩略图图像不工作

Question

我试图创建缩略图图像上传视频与FFMPEG在ASP. NET核心如下：

private void GetThumbnail(IFormFile file)
{
        var fileName = CreateEmployeeViewModel.Video.FileName;
        var webRootPath = _webHostEnvironment.WebRootPath;
        var filePath = Path.Combine(webRootPath, "videos", fileName);

        var fileExtension = Path.GetExtension(filePath);
        var thumbnailImageName = fileName.Replace(fileExtension, ".jpg");
        var thumbnailImagePath = Path.Combine(webRootPath, "thumbnails", thumbnailImageName);

        ProcessStartInfo startInfo = new ProcessStartInfo();

        string arguments = $"-i {filePath} -ss 00:00:14.435 -vframes 1 {thumbnailImagePath}";

        startInfo.FileName = Path.Combine(Directory.GetCurrentDirectory(), "Ffmpeg\\ffmpeg.exe");
        startInfo.CreateNoWindow = false;
        startInfo.UseShellExecute = false;
        startInfo.RedirectStandardError = true;
        startInfo.RedirectStandardOutput = true;
        startInfo.WindowStyle = ProcessWindowStyle.Hidden;
        startInfo.Arguments = arguments;

        try
        {
            Process process = Process.Start(startInfo);
            process.WaitForExit(5000);
            process.Close();
        }
        catch
        {
            // Log error.
        }

}

它没有显示任何错误，但也没有生成缩略图。请问我遗漏了什么吗？

注意：如果我从命令行执行上面的配置，它就会工作！

Answer 1

尝试使用Xabe。ffmpeghttps://ffmpeg.xabe.net/

下面将获得您正在上载的视频的快照

string output = Path.Combine(Path.GetTempPath(), Guid.NewGuid() + ".png");

IConversion conversion = await 
FFmpeg.Conversions.FromSnippet.Snapshot(inputMp4Path, output, 
TimeSpan.FromSeconds(0));
IConversionResult result = await conversion.Start();

在输出字符串中指定格式。您可以在他们的文档中阅读更多内容