Проекты

1// Сжатие и сохранение загруженного видео (FFMpegCore → H.264, CRF 23, 720p)2public async Task<string> CompressAndSaveAsync(Stream fileStream, string fileName, string uploadPath)3{4    GlobalFFOptions.Configure(new FFOptions { BinaryFolder = @"D:\Program\ffmpeg\bin" });56    var ext = Path.GetExtension(fileName).ToLower();7    var newFileName = $"{Guid.NewGuid()}{ext}";89    var webRootPath = _env.WebRootPath ?? Path.Combine(Directory.GetCurrentDirectory(), "wwwroot");10    var uploadDir = uploadPath.TrimStart('/');11    var tempPath = Path.Combine(Path.GetTempPath(), newFileName);12    var fullPath = Path.Combine(webRootPath, uploadDir, newFileName);1314    Directory.CreateDirectory(Path.GetDirectoryName(fullPath) ?? string.Empty);1516    // сохраняем полученный поток во временный файл17    using (var temp = File.Create(tempPath))18    {19        await fileStream.CopyToAsync(temp);20    }2122    try23    {24        await FFMpegArguments25            .FromFileInput(tempPath)26            .OutputToFile(fullPath, overwrite: true, options => options27                .WithVideoCodec(VideoCodec.LibX264)28                .WithConstantRateFactor(23)29                .WithAudioCodec(AudioCodec.Aac)30                .WithAudioBitrate(128)31                .WithVideoBitrate(1000)32                .Resize(1280, 720))33            .ProcessAsynchronously();3435        _logger.LogInformation($"Video compressed: {fullPath}");3637        return $"{uploadPath}/{newFileName}";38    }39    finally40    {41        if (File.Exists(tempPath))42            File.Delete(tempPath);43    }44}