Add Worker.trim

2019-11-18 22:46:39 +08:00
parent 7a380f529b
commit e06c9bd19a
5 changed files with 137 additions and 26 deletions
--- a/examples/browser/trim.html
+++ b/examples/browser/trim.html
@@ -0,0 +1,47 @@
+<html>
+  <head>
+    <script src="/dist/ffmpeg.dev.js"></script>
+    <style>
+      html, body {
+        margin: 0;
+        width: 100%;
+        height: 100%
+      }
+      body {
+        display: flex;
+        flex-direction: column;
+        align-items: center;
+      }
+    </style>
+  </head>
+  <body>
+    <h3>Upload a mp4 (x264) video and trim its first 2 seconds and play!</h3>
+    <video id="output-video" controls></video><br/>
+    <input type="file" id="uploader">
+    <p id="message"></p>
+    <script>
+      const { createWorker } = FFmpeg;
+      const worker = createWorker({
+        corePath: '../../node_modules/@ffmpeg/core/ffmpeg-core.js',
+        logger: ({ message }) => console.log(message),
+      });
+
+      const transcode = async ({ target: { files } }) => {
+        const message = document.getElementById('message');
+        const { name } = files[0];
+        message.innerHTML = 'Loading ffmpeg-core.js';
+        await worker.load();
+        message.innerHTML = 'Start trimming';
+        await worker.write(name, files[0]);
+        await worker.trim(name,  'output.mp4', 0, 2);
+        message.innerHTML = 'Complete trimming';
+        const { data } = await worker.read('output.mp4');
+
+        const video = document.getElementById('output-video');
+        video.src = URL.createObjectURL(new Blob([data.buffer], { type: 'video/mp4' }));
+      }
+      const elm = document.getElementById('uploader');
+      elm.addEventListener('change', transcode);
+    </script>
+  </body>
+</html>
--- a/examples/node/trim.js
+++ b/examples/node/trim.js
@@ -0,0 +1,17 @@
+const fs = require('fs');
+const { createWorker } = require('../../src');
+
+const worker = createWorker({
+  logger: ({ message }) => console.log(message),
+});
+
+(async () => {
+  await worker.load();
+  console.log('Start trimming');
+  await worker.write('flame.avi', '../../tests/assets/flame.avi');
+  await worker.trim('flame.avi', 'flame_trim.avi', 1, 2);
+  const { data } = await worker.read('flame_trim.avi');
+  console.log('Complete trimming');
+  fs.writeFileSync('flame_trim.avi', Buffer.from(data));
+  process.exit(0);
+})();