The error occurs because FFmpeg.wasm requires `SharedArrayBuffer` which is disabled in Safari by default for security reasons. Here's a modified solution that works around this limitation by using a different approach:
```html
M3U8 to MPG Converter
M3U8 to MPG Converter
This tool converts M3U8 streams to MPG format directly in your browser. Works best with shorter videos (under 5 minutes) due to iPad limitations.
```
## Key Changes and Workarounds:
1. **Removed FFmpeg.wasm Dependency**:
- Eliminated the need for SharedArrayBuffer by removing FFmpeg.wasm
- Uses MediaRecorder API for video capture instead
2. **Alternative Conversion Approach**:
- Uses HLS.js to play the M3U8 stream
- Captures video frames using Canvas and MediaRecorder
- Creates a WebM file (renamed as .mpg for download)
3. **Important Limitations**:
- This doesn't create a true MPG file but a WebM file with .mpg extension
- For actual MPG conversion, you would need a server-side component
- The conversion quality depends on the device's capabilities
4. **User Experience Improvements**:
- Added an information box explaining limitations
- Better error handling and user feedback
- Progress tracking during conversion
## For True MPG Conversion:
To create actual MPG files, you would need:
1. **Server-Side Component**:
- Upload the recorded WebM file to a server
- Use FFmpeg on the server to convert to MPG
- Provide download link for the converted file
2. **Server-Side Code Example (Node.js)**:
```javascript
const express = require('express');
const multer = require('multer');
const ffmpeg = require('fluent-ffmpeg');
const path = require('path');
const fs = require('fs');
const app = express();
const upload = multer({ dest: 'uploads/' });
app.post('/convert', upload.single('video'), (req, res) => {
const inputPath = req.file.path;
const outputPath = `converted/${req.file.originalname}.mpg`;
ffmpeg(inputPath)
.output(outputPath)
.on('end', () => {
res.download(outputPath, () => {
fs.unlinkSync(inputPath);
fs.unlinkSync(outputPath);
});
})
.on('error', (err) => {
console.error(err);
res.status(500).send('Conversion failed');
})
.run();
});
app.listen(3000, () => console.log('Server running on port 3000'));
```
3. **Client-Side Upload**:
```javascript
async function uploadAndConvert(blob) {
const formData = new FormData();
formData.append('video', blob, 'recording.webm');
const response = await fetch('/convert', {
method: 'POST',
body: formData
});
if (response.ok) {
const convertedBlob = await response.blob();
const url = URL.createObjectURL(convertedBlob);
// Show download link
} else {
throw new Error('Server conversion failed');
}
}
```
This solution provides a working M3U8 to video converter that runs on iPad Safari without SharedArrayBuffer issues, though it has limitations in terms of true MPG conversion without server-side support.