repo creation with initial code after cloning public repo

src/Jellyfin.MediaEncoding.Keyframes/Matroska/Models/Info.cs

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+namespace Jellyfin.MediaEncoding.Keyframes.Matroska.Models;
+
+/// <summary>
+/// The matroska Info segment.
+/// </summary>
+internal class Info
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="Info"/> class.
+    /// </summary>
+    /// <param name="timestampScale">The timestamp scale in nanoseconds.</param>
+    /// <param name="duration">The duration of the entire file.</param>
+    public Info(long timestampScale, double? duration)
+    {
+        TimestampScale = timestampScale;
+        Duration = duration;
+    }
+
+    /// <summary>
+    /// Gets the timestamp scale in nanoseconds.
+    /// </summary>
+    public long TimestampScale { get; }
+
+    /// <summary>
+    /// Gets the total duration of the file.
+    /// </summary>
+    public double? Duration { get; }
+}

src/Jellyfin.MediaEncoding.Keyframes/Matroska/Models/SeekHead.cs

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+namespace Jellyfin.MediaEncoding.Keyframes.Matroska.Models;
+
+/// <summary>
+/// The matroska SeekHead segment. All positions are relative to the Segment container.
+/// </summary>
+internal class SeekHead
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="SeekHead"/> class.
+    /// </summary>
+    /// <param name="infoPosition">The relative file position of the info segment.</param>
+    /// <param name="tracksPosition">The relative file position of the tracks segment.</param>
+    /// <param name="cuesPosition">The relative file position of the cues segment.</param>
+    public SeekHead(long infoPosition, long tracksPosition, long cuesPosition)
+    {
+        InfoPosition = infoPosition;
+        TracksPosition = tracksPosition;
+        CuesPosition = cuesPosition;
+    }
+
+    /// <summary>
+    /// Gets relative file position of the info segment.
+    /// </summary>
+    public long InfoPosition { get; }
+
+    /// <summary>
+    /// Gets the relative file position of the tracks segment.
+    /// </summary>
+    public long TracksPosition { get; }
+
+    /// <summary>
+    /// Gets the relative file position of the cues segment.
+    /// </summary>
+    public long CuesPosition { get; }
+}