diff --git a/src/ImageSharp/Formats/Webp/Lossless/Vp8LEncoder.cs b/src/ImageSharp/Formats/Webp/Lossless/Vp8LEncoder.cs
index d301df94f6..af472845ac 100644
--- a/src/ImageSharp/Formats/Webp/Lossless/Vp8LEncoder.cs
+++ b/src/ImageSharp/Formats/Webp/Lossless/Vp8LEncoder.cs
@@ -307,7 +307,8 @@ internal class Vp8LEncoder : IDisposable
             prevPosition = BitWriterBase.WriteAnimationFrame(stream, new()
             {
                 Width = (uint)frame.Width,
-                Height = (uint)frame.Height
+                Height = (uint)frame.Height,
+                Duration = frame.Metadata.GetWebpMetadata().FrameDuration
             });
         }
 
diff --git a/src/ImageSharp/Formats/Webp/Lossy/Vp8Encoder.cs b/src/ImageSharp/Formats/Webp/Lossy/Vp8Encoder.cs
index ccd7d8b6d5..40dbb90de6 100644
--- a/src/ImageSharp/Formats/Webp/Lossy/Vp8Encoder.cs
+++ b/src/ImageSharp/Formats/Webp/Lossy/Vp8Encoder.cs
@@ -477,7 +477,8 @@ internal class Vp8Encoder : IDisposable
                 prevPosition = BitWriterBase.WriteAnimationFrame(stream, new()
                 {
                     Width = (uint)frame.Width,
-                    Height = (uint)frame.Height
+                    Height = (uint)frame.Height,
+                    Duration = frame.Metadata.GetWebpMetadata().FrameDuration
                 });
             }