Transcribe Audio Files

Access to Transcribe Audio Files at: https://sandbox.heify.com/sandbox/create-transcription

Transcribe Audio Files

The Transcribe page is where you upload audio or video files and initiate the transcription process. Whether you have local files or public URLs, this interface makes it simple to start processing. For a detailed technical breakdown of the Transcription object and all its attributes, please see the Transcription Object Reference.

How It Works

Select a Configuration

Choose which transcription template to apply to your files.

Don’t have a Configuration yet? Create one first →

Provide Audio Files

Upload local files or enter public URLs.

If enter public URL, make sure the URL is publicly accessible at the time of processing. If the file becomes unavailable later, the transcription will fail.

Process

Click the button to start transcription.

Supported Formats

Audio Formats	Video Formats
`aac`	`mp4`
`aiff`	`webm`
`amr`
`asf`
`flac`
`mp3`
`ogg`
`wav`
`m4a`

File Limits

Limit	Value
Max file size	200 MB
Max duration	7200 seconds (2 hours)

View all limits →

Best Practices

Audio Quality Tips

Better audio quality = better transcription accuracy.Optimize your audio:

Clear recording - Minimize background noise
Good microphone - Use quality recording equipment
Proper levels - Not too quiet, not too loud
Mono or stereo - Either works, mono is smaller
16kHz+ sample rate - Higher is better for quality

Avoid:

Heavy background music
Multiple overlapping speakers
Very low bitrate compression
Heavily processed audio (lots of effects)

Troubleshooting

File Upload Fails

Issue: Upload progress stops or shows an error.Common Causes:1. File Too Large

Max size is 200 MB
Compress the audio file
Use a lower bitrate

2. Unsupported Format

Convert to a supported format (MP3, WAV, etc.)
Check the file extension matches the actual format

URL Not Recognized

Issue: Public URL shows as invalid.Checklist:

URL is publicly accessible (try opening in incognito mode)
URL is a direct link to the file, not a player page
File format is supported
URL uses HTTPS (or HTTP)
No authentication required
CORS headers allow external access (for some platforms)

Test the URL:

curl -I https://your-url.com/audio.mp3

Should return 200 OK and Content-Type: audio/...

Need Help?

Support

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Documentation

Explore the Sandbox guide