From bfdb83b41b40d4ee31d969dcb2cfbf3552ba6ef2 Mon Sep 17 00:00:00 2001
From: santosh898 <santoshkottakota007@gmail.com>
Date: Mon, 16 Dec 2019 15:32:28 +0530
Subject: [PATCH] concatDemuxer with example

---
 examples/browser/concatDemuxer.html | 57 +++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 examples/browser/concatDemuxer.html
diff --git a/examples/browser/concatDemuxer.html b/examples/browser/concatDemuxer.html
new file mode 100644
index 0000000..1295ceb
--- /dev/null
+++ b/examples/browser/concatDemuxer.html
@@ -0,0 +1,57 @@
+<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>Select multiple video files to Concatenate</h3>
+    <video id="output-video" controls></video><br />
+    <input type="file" id="uploader" multiple />
+    <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");
+        message.innerHTML = "Loading ffmpeg-core.js";
+        await worker.load();
+        message.innerHTML = "Start Concating";
+        const inputPaths = [];
+        for (const file of files) {
+          const { name } = file;
+          await worker.write(name, file);
+          inputPaths.push(name);
+        }
+        await worker.concatDemuxer(inputPaths, "output.mp4");
+        message.innerHTML = "Complete Concating";
+        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>
