Update usage
This commit is contained in:
Jerome Wu
parent
8c2e8a88a8
commit
0a96b78c74
@ -6,7 +6,7 @@ Learn the basics of using ffmpeg.wasm.
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It is recommended to read [Overview](/docs/overview) first.
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:::
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## Transcode avi to mp4 video
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## Transcode webm to mp4 video
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:::caution
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If you are a [vite](https://vitejs.dev/) user, use `esm` in **baseURL** instead of `umd`:
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@ -26,23 +26,23 @@ function() {
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const load = async () => {
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const baseURL = 'https://unpkg.com/@ffmpeg/core@0.12.2/dist/umd'
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const ffmpeg = ffmpegRef.current;
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ffmpeg.on("log", ({ message }) => {
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ffmpeg.on('log', ({ message }) => {
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messageRef.current.innerHTML = message;
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console.log(message);
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});
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// toBlobURL is used to bypass CORS issue, urls with the same
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// domain can be used directly.
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await ffmpeg.load({
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coreURL: await toBlobURL(`${baseURL}/ffmpeg-core.js`, "text/javascript"),
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wasmURL: await toBlobURL(`${baseURL}/ffmpeg-core.wasm`, "application/wasm"),
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coreURL: await toBlobURL(`${baseURL}/ffmpeg-core.js`, 'text/javascript'),
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wasmURL: await toBlobURL(`${baseURL}/ffmpeg-core.wasm`, 'application/wasm'),
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});
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setLoaded(true);
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}
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const transcode = async () => {
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const ffmpeg = ffmpegRef.current;
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await ffmpeg.writeFile("input.avi", await fetchFile('/video/video-15s.avi'));
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await ffmpeg.exec(['-i', 'input.avi', 'output.mp4']);
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await ffmpeg.writeFile('input.webm', await fetchFile('https://raw.githubusercontent.com/ffmpegwasm/testdata/master/Big_Buck_Bunny_180_10s.webm'));
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await ffmpeg.exec(['-i', 'input.webm', 'output.mp4']);
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const data = await ffmpeg.readFile('output.mp4');
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videoRef.current.src =
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URL.createObjectURL(new Blob([data.buffer], {type: 'video/mp4'}));
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@ -52,7 +52,7 @@ function() {
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? (
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<>
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<video ref={videoRef} controls></video><br/>
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<button onClick={transcode}>Transcode avi to mp4</button>
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<button onClick={transcode}>Transcode webm to mp4</button>
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<p ref={messageRef}></p>
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<p>Open Developer Tools (Ctrl+Shift+I) to View Logs</p>
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</>
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@ -83,24 +83,24 @@ function() {
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const load = async () => {
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const baseURL = 'https://unpkg.com/@ffmpeg/core-mt@0.12.2/dist/umd'
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const ffmpeg = ffmpegRef.current;
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ffmpeg.on("log", ({ message }) => {
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ffmpeg.on('log', ({ message }) => {
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messageRef.current.innerHTML = message;
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console.log(message);
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});
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// toBlobURL is used to bypass CORS issue, urls with the same
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// domain can be used directly.
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await ffmpeg.load({
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coreURL: await toBlobURL(`${baseURL}/ffmpeg-core.js`, "text/javascript"),
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wasmURL: await toBlobURL(`${baseURL}/ffmpeg-core.wasm`, "application/wasm"),
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workerURL: await toBlobURL(`${baseURL}/ffmpeg-core.worker.js`, "text/javascript"),
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coreURL: await toBlobURL(`${baseURL}/ffmpeg-core.js`, 'text/javascript'),
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wasmURL: await toBlobURL(`${baseURL}/ffmpeg-core.wasm`, 'application/wasm'),
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workerURL: await toBlobURL(`${baseURL}/ffmpeg-core.worker.js`, 'text/javascript'),
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});
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setLoaded(true);
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}
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const transcode = async () => {
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const ffmpeg = ffmpegRef.current;
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await ffmpeg.writeFile("input.avi", await fetchFile('/video/video-15s.avi'));
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await ffmpeg.exec(['-i', 'input.avi', 'output.mp4']);
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await ffmpeg.writeFile('input.webm', await fetchFile('https://raw.githubusercontent.com/ffmpegwasm/testdata/master/Big_Buck_Bunny_180_10s.webm'));
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await ffmpeg.exec(['-i', 'input.webm', 'output.mp4']);
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const data = await ffmpeg.readFile('output.mp4');
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videoRef.current.src =
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URL.createObjectURL(new Blob([data.buffer], {type: 'video/mp4'}));
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@ -110,7 +110,7 @@ function() {
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? (
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<>
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<video ref={videoRef} controls></video><br/>
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<button onClick={transcode}>Transcode avi to mp4</button>
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<button onClick={transcode}>Transcode webm to mp4</button>
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<p ref={messageRef}></p>
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<p>Open Developer Tools (Ctrl+Shift+I) to View Logs</p>
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</>
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@ -136,24 +136,24 @@ function() {
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const load = async () => {
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const baseURL = 'https://unpkg.com/@ffmpeg/core@0.12.2/dist/umd'
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const ffmpeg = ffmpegRef.current;
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ffmpeg.on("log", ({ message }) => {
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ffmpeg.on('log', ({ message }) => {
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messageRef.current.innerHTML = message;
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console.log(message);
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});
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// toBlobURL is used to bypass CORS issue, urls with the same
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// domain can be used directly.
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await ffmpeg.load({
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coreURL: await toBlobURL(`${baseURL}/ffmpeg-core.js`, "text/javascript"),
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wasmURL: await toBlobURL(`${baseURL}/ffmpeg-core.wasm`, "application/wasm"),
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coreURL: await toBlobURL(`${baseURL}/ffmpeg-core.js`, 'text/javascript'),
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wasmURL: await toBlobURL(`${baseURL}/ffmpeg-core.wasm`, 'application/wasm'),
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});
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setLoaded(true);
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}
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const transcode = async () => {
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const ffmpeg = ffmpegRef.current;
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await ffmpeg.writeFile("input.avi", await fetchFile('/video/video-15s.avi'));
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await ffmpeg.writeFile('input.webm', await fetchFile('https://raw.githubusercontent.com/ffmpegwasm/testdata/master/Big_Buck_Bunny_180_10s.webm'));
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// The exec should stop after 1 second.
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await ffmpeg.exec(['-i', 'input.avi', 'output.mp4'], 1000);
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await ffmpeg.exec(['-i', 'input.webm', 'output.mp4'], 1000);
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const data = await ffmpeg.readFile('output.mp4');
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videoRef.current.src =
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URL.createObjectURL(new Blob([data.buffer], {type: 'video/mp4'}));
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@ -163,7 +163,7 @@ function() {
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? (
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<>
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<video ref={videoRef} controls></video><br/>
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<button onClick={transcode}>Transcode avi to mp4</button>
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<button onClick={transcode}>Transcode webm to mp4</button>
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<p ref={messageRef}></p>
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<p>Open Developer Tools (Ctrl+Shift+I) to View Logs</p>
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</>
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@ -195,22 +195,22 @@ function() {
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const baseURL = 'https://unpkg.com/@ffmpeg/core@0.12.2/dist/umd'
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const ffmpeg = ffmpegRef.current;
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// Listen to progress event instead of log.
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ffmpeg.on("progress", ({ progress, time }) => {
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ffmpeg.on('progress', ({ progress, time }) => {
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messageRef.current.innerHTML = `${progress * 100} % (transcoded time: ${time / 1000000} s)`;
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});
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// toBlobURL is used to bypass CORS issue, urls with the same
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// domain can be used directly.
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await ffmpeg.load({
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coreURL: await toBlobURL(`${baseURL}/ffmpeg-core.js`, "text/javascript"),
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wasmURL: await toBlobURL(`${baseURL}/ffmpeg-core.wasm`, "application/wasm"),
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coreURL: await toBlobURL(`${baseURL}/ffmpeg-core.js`, 'text/javascript'),
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wasmURL: await toBlobURL(`${baseURL}/ffmpeg-core.wasm`, 'application/wasm'),
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});
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setLoaded(true);
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}
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const transcode = async () => {
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const ffmpeg = ffmpegRef.current;
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await ffmpeg.writeFile("input.avi", await fetchFile('/video/video-15s.avi'));
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await ffmpeg.exec(['-i', 'input.avi', 'output.mp4']);
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await ffmpeg.writeFile('input.webm', await fetchFile('https://raw.githubusercontent.com/ffmpegwasm/testdata/master/Big_Buck_Bunny_180_10s.webm'));
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await ffmpeg.exec(['-i', 'input.webm', 'output.mp4']);
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const data = await ffmpeg.readFile('output.mp4');
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videoRef.current.src =
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URL.createObjectURL(new Blob([data.buffer], {type: 'video/mp4'}));
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@ -220,7 +220,7 @@ function() {
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? (
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<>
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<video ref={videoRef} controls></video><br/>
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<button onClick={transcode}>Transcode avi to mp4</button>
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<button onClick={transcode}>Transcode webm to mp4</button>
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<p ref={messageRef}></p>
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</>
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)
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@ -245,37 +245,42 @@ function() {
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const load = async () => {
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const baseURL = 'https://unpkg.com/@ffmpeg/core@0.12.2/dist/umd'
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const ffmpeg = ffmpegRef.current;
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ffmpeg.on("log", ({ message }) => {
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ffmpeg.on('log', ({ message }) => {
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messageRef.current.innerHTML = message;
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console.log(message);
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});
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// toBlobURL is used to bypass CORS issue, urls with the same
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// domain can be used directly.
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await ffmpeg.load({
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coreURL: await toBlobURL(`${baseURL}/ffmpeg-core.js`, "text/javascript"),
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wasmURL: await toBlobURL(`${baseURL}/ffmpeg-core.wasm`, "application/wasm"),
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coreURL: await toBlobURL(`${baseURL}/ffmpeg-core.js`, 'text/javascript'),
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wasmURL: await toBlobURL(`${baseURL}/ffmpeg-core.wasm`, 'application/wasm'),
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});
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setLoaded(true);
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}
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const transcode = async () => {
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const ffmpeg = ffmpegRef.current;
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await ffmpeg.writeFile("input.avi", await fetchFile('/video/video-15s.avi'));
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await ffmpeg.writeFile('input.webm', await fetchFile('https://raw.githubusercontent.com/ffmpegwasm/testdata/master/Big_Buck_Bunny_180_10s.webm'));
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await ffmpeg.exec([
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'-i',
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'input.avi',
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'input.webm',
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'-f',
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'segment',
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'-segment_time',
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'3',
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'-g',
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'9',
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'-sc_threshold',
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'0',
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'-force_key_frames',
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'expr:gte(t,n_forced*9)',
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'-reset_timestamps',
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'1',
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'-map',
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'0:0',
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'-an',
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'0',
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'output_%d.mp4'
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]);
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const data = await ffmpeg.readFile('output_2.mp4');
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const data = await ffmpeg.readFile('output_1.mp4');
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videoRef.current.src =
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URL.createObjectURL(new Blob([data.buffer], {type: 'video/mp4'}));
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}
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@ -284,7 +289,7 @@ function() {
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? (
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<>
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<video ref={videoRef} controls></video><br/>
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<button onClick={transcode}>Split video to segments of 3 sec. and plays 3rd segment</button>
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<button onClick={transcode}>Split video to segments of 3 sec. and plays 2nd segment</button>
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<p ref={messageRef}></p>
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<p>Open Developer Tools (Ctrl+Shift+I) to View Logs</p>
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</>
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@ -310,26 +315,26 @@ function() {
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const load = async () => {
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const baseURL = 'https://unpkg.com/@ffmpeg/core@0.12.2/dist/umd'
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const ffmpeg = ffmpegRef.current;
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ffmpeg.on("log", ({ message }) => {
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ffmpeg.on('log', ({ message }) => {
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messageRef.current.innerHTML = message;
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console.log(message);
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});
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// toBlobURL is used to bypass CORS issue, urls with the same
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// domain can be used directly.
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await ffmpeg.load({
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coreURL: await toBlobURL(`${baseURL}/ffmpeg-core.js`, "text/javascript"),
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wasmURL: await toBlobURL(`${baseURL}/ffmpeg-core.wasm`, "application/wasm"),
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coreURL: await toBlobURL(`${baseURL}/ffmpeg-core.js`, 'text/javascript'),
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wasmURL: await toBlobURL(`${baseURL}/ffmpeg-core.wasm`, 'application/wasm'),
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});
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setLoaded(true);
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}
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const transcode = async () => {
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const ffmpeg = ffmpegRef.current;
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await ffmpeg.writeFile("input.avi", await fetchFile('/video/video-15s.avi'));
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await ffmpeg.writeFile("arial.ttf", await fetchFile('/asset/arial.ttf'));
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await ffmpeg.writeFile('input.webm', await fetchFile('https://raw.githubusercontent.com/ffmpegwasm/testdata/master/Big_Buck_Bunny_180_10s.webm'));
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await ffmpeg.writeFile('arial.ttf', await fetchFile('https://raw.githubusercontent.com/ffmpegwasm/testdata/master/arial.ttf'));
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await ffmpeg.exec([
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'-i',
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'input.avi',
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'input.webm',
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'-vf',
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'drawtext=fontfile=/arial.ttf:text=\'ffmpeg.wasm\':x=10:y=10:fontsize=24:fontcolor=white',
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'output.mp4',
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