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File Transcription

Transcribe audio files like MP3, WAV, and M4A

In addition to live dictation, Yapper can transcribe existing audio files. This is useful for transcribing recordings, voice memos, podcasts, or any other audio content.

Supported Formats

Yapper supports the following audio file formats:

FormatExtensionCommon Uses
MP3.mp3Music, podcasts, voice recordings
WAV.wavHigh-quality recordings, professional audio
M4A.m4aApple Voice Memos, iOS recordings, iTunes

How to Transcribe a File

Step 1: Open File Transcription

  1. Click the Yapper icon in the menu bar
  2. Select Transcribe Audio File…

A window will open for file transcription.

Step 2: Select Your File

  1. Click Choose File… in the transcription window
  2. Navigate to your audio file
  3. Select the file and click Open

The window will display:

  • File name
  • Duration (length of the audio)
  • File size

Step 3: Start Transcription

  1. Review the file information to confirm you have the right file
  2. Click Start Transcription
  3. Wait for the transcription to complete

A progress indicator shows the status. Longer files take more time—expect roughly real-time processing (a 5-minute file takes about 5 minutes to transcribe).

Step 4: Copy the Result

Once transcription is complete:

  1. Review the transcribed text in the window
  2. Click Copy to copy it to your clipboard
  3. Paste it wherever you need it

Tips for Better Results

Audio Quality

Transcription accuracy depends heavily on audio quality:

  • Clear speech — Clean recordings with minimal background noise work best
  • Consistent volume — Avoid recordings where speakers are very quiet or very loud
  • Single speaker — Yapper doesn’t distinguish between speakers; multi-speaker audio gets transcribed as a single stream of text

Language Settings

File transcription uses the same language setting as live dictation:

  1. Go to Settings → Transcription → Language
  2. Select the language spoken in your audio file
  3. Return to file transcription

If your audio contains multiple languages, set the primary language and expect mixed results for secondary languages.

Model Selection

Larger models produce better transcription accuracy:

  • Large v3 Turbo (recommended) — Best balance of speed and accuracy
  • Large v3 — Maximum accuracy, slower processing
  • Smaller models — Faster but less accurate

If you’re transcribing important content, use the largest model you can.

Processing Time

Transcription time depends on:

FactorImpact
File lengthLonger files take longer
Model sizeLarger models are slightly slower
Mac performanceApple Silicon Macs are significantly faster

As a general rule, expect processing to take approximately as long as the audio file’s duration on Apple Silicon Macs.

Limitations

What File Transcription Doesn’t Do

  • No speaker identification — Yapper doesn’t label who is speaking
  • No timestamps — The output is plain text without time markers
  • No auto-typing — Results are copied manually, not auto-typed like live dictation
  • No AI enhancement — File transcription doesn’t apply AI enhancement automatically (you can paste the text and process it separately if needed)

File Size Limits

There’s no hard file size limit, but very long files (several hours) may:

  • Take a long time to process
  • Use significant memory
  • Be better split into smaller segments

For files longer than 30-60 minutes, consider splitting them into smaller chunks.

Common Use Cases

Voice Memos

Transcribe voice memos recorded on your iPhone:

  1. Transfer the .m4a file to your Mac (via AirDrop, iCloud, or cable)
  2. Open File Transcription in Yapper
  3. Select the file and transcribe

Meeting Recordings

Transcribe recorded meetings or calls:

  1. Export the recording as MP3, WAV, or M4A
  2. Transcribe in Yapper
  3. Copy the result into your notes or documentation

Note: Always ensure you have consent to record and transcribe conversations.

Podcasts and Interviews

Transcribe podcast episodes or interview recordings:

  1. Download or export the audio file
  2. Transcribe in Yapper
  3. Use the text for show notes, articles, or research

Troubleshooting

”Unsupported file format” error

The file isn’t in a supported format. Convert it to MP3, WAV, or M4A using an audio converter or:

  • QuickTime Player (File → Export As → Audio Only)
  • Online converters
  • FFmpeg (for technical users)

Transcription quality is poor

  • Check that the correct language is selected
  • Try a larger speech model
  • Ensure the audio quality is good (clear speech, minimal noise)

Transcription is stuck or very slow

  • Let it run—longer files take time
  • Check Activity Monitor for Yapper’s CPU usage (it should be actively processing)
  • Try a smaller model if your Mac is struggling

For more help, see Model Issues.