move project

helpers/FFProbeHelper.cs

@@ -0,0 +1,60 @@
+using System.Diagnostics;
+using System.Text.Json;
+
+namespace TagVid.Helpers;
+
+public class VideoMetadata
+{
+    public int Width { get; set; }
+    public int Height { get; set; }
+    public TimeSpan Duration { get; set; }
+}
+
+public class FFProbeHelper<T> where T : class
+{
+    private static ILogger<T> _logger;
+
+    public FFProbeHelper(ILogger<T> logger)
+    {
+        _logger = logger;
+    }
+    public async Task<VideoMetadata?> GetVideoMetadataAsync(string filePath)
+    {
+        var startInfo = new ProcessStartInfo
+        {
+            FileName = "ffprobe",
+            Arguments = $"-v quiet -print_format json -show_streams \"{filePath}\"",
+            RedirectStandardOutput = true,
+            UseShellExecute = false,
+            CreateNoWindow = true
+        };
+
+        using var process = new Process { StartInfo = startInfo };
+        process.Start();
+
+        string output = await process.StandardOutput.ReadToEndAsync();
+        await process.WaitForExitAsync();
+
+        using var jsonDoc = JsonDocument.Parse(output);
+        var streams = jsonDoc.RootElement.GetProperty("streams");
+
+        var videoStream = streams.EnumerateArray()
+            .FirstOrDefault(s => s.GetProperty("codec_type").GetString() == "video");
+
+        if (videoStream.ValueKind == JsonValueKind.Undefined)
+            return null;
+        videoStream.TryGetProperty("duration", out var durEl1);
+
+        _logger.LogInformation($"{videoStream.GetProperty("width")}x{videoStream.GetProperty("height")}, Duration: {durEl1}");
+        var metadata = new VideoMetadata
+        {
+            Width = videoStream.GetProperty("width").GetInt32(),
+            Height = videoStream.GetProperty("height").GetInt32(),
+            Duration = durEl1.ValueKind == JsonValueKind.String
+                ? TimeSpan.FromSeconds(double.Parse(durEl1.GetString() ?? "0"))
+                : TimeSpan.FromSeconds(durEl1.GetDouble())
+        };
+
+        return metadata;
+    }
+}