diff --git a/src/util/format/pixel.rs b/src/util/format/pixel.rs
index d5ad96c..79bbd43 100644
--- a/src/util/format/pixel.rs
+++ b/src/util/format/pixel.rs
@@ -299,13 +299,10 @@ unsafe impl Sync for Descriptor {}
 
 impl Pixel {
 	pub fn descriptor(self) -> Option<Descriptor> {
-		let ptr = unsafe { av_pix_fmt_desc_get(self.into()) };
+		unsafe {
+			let ptr = av_pix_fmt_desc_get(self.into());
 
-		if ptr.is_null() {
-			None
-		}
-		else {
-			Some(Descriptor { ptr })
+			ptr.as_ref().map(|ptr| Descriptor { ptr })
 		}
 	}
 }
diff --git a/src/util/frame/video.rs b/src/util/frame/video.rs
index c202573..a23757d 100644
--- a/src/util/frame/video.rs
+++ b/src/util/frame/video.rs
@@ -256,12 +256,11 @@ impl Video {
 			return self.height();
 		}
 
-		match self.format().descriptor() {
-			None => self.height(),
-			Some(desc) => {
-				let s = desc.log2_chroma_h();
-				(self.height() + (1 << s) - 1) >> s
-			}
+		if let Some(desc) = self.format().descriptor() {
+			let s = desc.log2_chroma_h();
+			(self.height() + (1 << s) - 1) >> s
+		} else {
+			self.height()
 		}
 	}