diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index bc40201..495b27c 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -5,6 +5,7 @@ on:
     types: [published]
 
 permissions:
+  id-token: write  # Required for OIDC
   contents: read
 
 jobs:
@@ -59,10 +60,6 @@ jobs:
 
       - name: Publish Mediabunny to npm
         run: npm publish --provenance --access public
-        env:
-          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
 
       - name: Publish workspace packages to npm
         run: npm publish --provenance --access public --workspaces 
-        env:
-          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
diff --git a/package-lock.json b/package-lock.json
index 2b55d39..cb3e7fd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "mediabunny",
-  "version": "1.25.4",
+  "version": "1.25.5",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "mediabunny",
-      "version": "1.25.4",
+      "version": "1.25.5",
       "license": "MPL-2.0",
       "workspaces": [
         "packages/*"
@@ -7739,9 +7739,9 @@
       }
     },
     "node_modules/mediabunny": {
-      "version": "1.25.3",
-      "resolved": "https://registry.npmjs.org/mediabunny/-/mediabunny-1.25.3.tgz",
-      "integrity": "sha512-+LDXv/kybsElRQCmMlrdbKmPNvegeIyouGeOUzW5DJ8+M56H4G6wyEL2AJ1A45UcOB+U62qJMV7tuFO9S7yA7g==",
+      "version": "1.25.4",
+      "resolved": "https://registry.npmjs.org/mediabunny/-/mediabunny-1.25.4.tgz",
+      "integrity": "sha512-oEMpnAj3fwP6mel84liF7vG58fl0RMC77jS9nmy0UH45nSfZgQqPj06TRQoje1n9hLpz6Dun4+UyCg6x+EKUvw==",
       "license": "MPL-2.0",
       "peer": true,
       "workspaces": [
@@ -12065,7 +12065,7 @@
     },
     "packages/mp3-encoder": {
       "name": "@mediabunny/mp3-encoder",
-      "version": "1.25.4",
+      "version": "1.25.5",
       "license": "MPL-2.0",
       "devDependencies": {
         "@types/emscripten": "^1.40.1"
diff --git a/package.json b/package.json
index bcffe30..edce602 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "mediabunny",
   "author": "Vanilagy",
-  "version": "1.25.4",
+  "version": "1.25.5",
   "description": "Pure TypeScript media toolkit for reading, writing, and converting media files, directly in the browser.",
   "type": "module",
   "workspaces": [
diff --git a/packages/mp3-encoder/package.json b/packages/mp3-encoder/package.json
index 5e60596..fa6c60d 100644
--- a/packages/mp3-encoder/package.json
+++ b/packages/mp3-encoder/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@mediabunny/mp3-encoder",
   "author": "Vanilagy",
-  "version": "1.25.4",
+  "version": "1.25.5",
   "description": "MP3 encoder extension for Mediabunny, based on LAME.",
   "main": "./dist/bundles/mediabunny-mp3-encoder.mjs",
   "module": "./dist/bundles/mediabunny-mp3-encoder.mjs",
diff --git a/src/conversion.ts b/src/conversion.ts
index 40ca946..59ccada 100644
--- a/src/conversion.ts
+++ b/src/conversion.ts
@@ -82,10 +82,16 @@ export type ConversionOptions = {
 
 	/** Options to trim the input file. */
 	trim?: {
-		/** The time in the input file in seconds at which the output file should start. Must be less than `end`.  */
-		start: number;
-		/** The time in the input file in seconds at which the output file should end. Must be greater than `start`. */
-		end: number;
+		/**
+		 * The time in the input file in seconds at which the output file should start. Must be less than `end`.
+		 * Defaults to 0 when omitted.
+		 */
+		start?: number;
+		/**
+		 * The time in the input file in seconds at which the output file should end. Must be greater than `start`.
+		 * Defaults to the duration of the input when omitted.
+		 */
+		end?: number;
 	};
 
 	/**