diff --git a/dev/convert.html b/dev/convert.html
index 565c9a5..1832b5f 100644
--- a/dev/convert.html
+++ b/dev/convert.html
@@ -24,7 +24,7 @@
 			chunked: true,
 			chunkSize: 2**20
 		});
-		const outputFormat = new Mediabunny.Mp3OutputFormat({});
+		const outputFormat = new Mediabunny.Mp4OutputFormat({});
 
 		const button = document.createElement('button');
 		button.textContent = 'Cancel';
@@ -92,6 +92,7 @@
 			},
 			*/
 			video: () => ({
+				width: 300,
 				//alpha: 'keep',
 				//width: 320,
 				//discard: true,
@@ -128,7 +129,7 @@
 				//width: 200,
 				//height: 100,
 			}),
-			tags: {
+			tags: {} ?? {
 				title: 'Bigggy',
 				artist: 'Buck Bunny',
 				images: [{
@@ -146,8 +147,8 @@
 				}
 			},
 			trim: {
-				start: 10,
-				//end: 20
+				start: 0,
+				end: 10
 			},
 		});
 		console.log(conversion);
diff --git a/src/sample.ts b/src/sample.ts
index 5f537da..805aebe 100644
--- a/src/sample.ts
+++ b/src/sample.ts
@@ -620,8 +620,8 @@ export class VideoSample implements Disposable {
 		const { sx, sy, sWidth, sHeight } = this._rotateSourceRegion(
 			options.crop?.left ?? 0,
 			options.crop?.top ?? 0,
-			options.crop?.width ?? this.codedWidth,
-			options.crop?.height ?? this.codedHeight,
+			options.crop?.width ?? rotatedWidth,
+			options.crop?.height ?? rotatedHeight,
 			rotation,
 		);