diff --git a/examples/browser/transcode.html b/examples/browser/transcode.html
index 95209ac..f0e7237 100644
--- a/examples/browser/transcode.html
+++ b/examples/browser/transcode.html
@@ -3,31 +3,25 @@
     <script src="/dist/ffmpeg.dev.js"></script>
   </head>
   <body>
-    <input type="file" id="uploader">
-    <video controls>
-      <source id="video-src" type="video/mp4">
-    </video>
+    <div>
+      <input type="file" id="uploader">
+    </div>
     <script>
       const { createWorker } = FFmpeg;
       const worker = createWorker({
         corePath: '../../node_modules/@ffmpeg/core/ffmpeg-core.js',
       });
 
-      const bufferToBase64 = (buf) => {
-        const binstr = Array.prototype.map.call(buf, function (ch) {
-          return String.fromCharCode(ch);
-        }).join('');
-        return btoa(binstr);
-      }
-
       const transcode = async ({ target: { files }  }) => {
         await worker.load();
         console.log('Start transcoding');
-        const { data } = await worker.transcode('/tests/assets/test.avi', 'mp4');
-        console.log(data);
+        const { data } = await worker.transcode(files[0], 'mp4');
         console.log('Complete transcoding');
-        const b64 = bufferToBase64(data);
-        document.getElementById('video-src').setAttribute('src', `data:video/mp4;base64,${b64}`);
+
+        const video = document.createElement('video');
+        video.controls = true;
+        video.src = URL.createObjectURL(new Blob([data.buffer], { type: 'video/mp4' }));
+        document.body.appendChild(video);
       }
       const elm = document.getElementById('uploader');
       elm.addEventListener('change', transcode);
diff --git a/examples/node/transcode.js b/examples/node/transcode.js
index c465155..024ca9c 100755
--- a/examples/node/transcode.js
+++ b/examples/node/transcode.js
@@ -1,3 +1,4 @@
+const fs = require('fs');
 const { createWorker } = require('../../src');
 
 const { argv } = process;
@@ -8,5 +9,5 @@ const worker = createWorker();
 (async () => {
   await worker.load();
   const { data } = await worker.transcode(inputPath, outputPath.split('.').pop());
-  console.log(data.length);
+  fs.writeFileSync(outputPath, Buffer.from(data));
 })();
diff --git a/package-lock.json b/package-lock.json
index 117c728..b149a81 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -811,9 +811,9 @@
       }
     },
     "@ffmpeg/core": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/@ffmpeg/core/-/core-0.1.0.tgz",
-      "integrity": "sha512-a4/HokRytKFJDW+RVvuf22rUzjNgXZKhlF6FIVBcLACIDcCEQZ0uCUC+5DZb+xprCvdMyXm0wy90uoYLRTq+LA=="
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/@ffmpeg/core/-/core-0.2.0.tgz",
+      "integrity": "sha512-kvCr0QH3B/5wc6boiUQq5PKWytmu9QpCpU2RqFT4+jh6Hv4JnU/43uprwX45PMjVh3T4g2coB2Dzix3x6Muasg=="
     },
     "@webassemblyjs/ast": {
       "version": "1.8.5",
diff --git a/package.json b/package.json
index 88a0027..18b6a12 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
   },
   "homepage": "https://github.com/jeromewu/ffmpeg.js#readme",
   "dependencies": {
-    "@ffmpeg/core": "^0.1.0",
+    "@ffmpeg/core": "^0.2.0",
     "is-url": "^1.2.4",
     "node-fetch": "^2.6.0",
     "regenerator-runtime": "^0.13.3",
diff --git a/src/createWorker.js b/src/createWorker.js
index 01b1ea2..a8469e1 100644
--- a/src/createWorker.js
+++ b/src/createWorker.js
@@ -86,7 +86,7 @@ module.exports = (_options = {}) => {
       log(`[${workerId}]: Complete ${jobId}`);
       let d = data;
       if (action === 'transcode') {
-        d = Array.from({ ...data, length: Object.keys(data).length });
+        d = Uint8Array.from({ ...data, length: Object.keys(data).length });
       }
       resolves[action]({ jobId, data: d });
     } else if (status === 'reject') {
diff --git a/src/worker-script/index.js b/src/worker-script/index.js
index ac86ca8..e43c791 100644
--- a/src/worker-script/index.js
+++ b/src/worker-script/index.js
@@ -49,7 +49,7 @@ const transcode = ({
   const data = Uint8Array.from({ ...media, length: Object.keys(media).length });
   const iPath = 'media';
   const oPath = `media.${outputExt}`;
-  const args = [...defaultArgs, ...`${options} -i ${iPath} ${oPath}`.trim().split(' ')];
+  const args = [...defaultArgs, ...`${options} -i file:${iPath} ${oPath}`.trim().split(' ')];
   Module.FS.writeFile(iPath, data);
   ffmpeg(args.length, strList2ptr(args));
   res.resolve(Module.FS.readFile(oPath));
