Extract from M4A
Use this extractor for .m4a files. It can extract metadata, artwork, chapters, chapter audio, transcript into a ZIP result.
Try Extract from Audio in the browser ->
Extract.FAST uses this same API -- what you see in the browser is what you get in code.
Quick reference
| Field | Value |
|---|---|
| Source file type | .m4a |
| Source group | Audio |
| Submit endpoint | POST https://api.tools.fast/extract |
| Estimate endpoint | POST https://api.tools.fast/extract/estimate/m4a |
| Result | ZIP download |
| Default capabilities | audio.metadata, audio.artwork, audio.chapters, audio.chapterAudio |
| Max file size | free: 50 MB; pro: 2048 MB |
| Document limits | Not applicable |
| Duration limits | free: 60 minutes; pro: 300 minutes |
Capabilities
| Capability | Default | Options | Pricing | Description |
|---|---|---|---|---|
audio.metadata | Yes | None | Included | File information, duration, dates, and embedded tags. |
audio.artwork | Yes | None | Included | Cover art and attached pictures. |
audio.chapters | Yes | None | Included | Chapter markers exported for review. |
audio.chapterAudio | Yes | audioFormat | Included | Chapter audio files split from markers. |
media.transcript | No | transcription.mode | fast: 2 credits per 1 minute; quality: 4 credits per 1 minute; meeting-intelligence: 6 credits per 1 minute | Create transcripts from speech. |
Capability options
Chapter audio
| Option | Type | Default | Allowed values | Limits |
|---|---|---|---|---|
audioFormat | enum | mp3 | mp3, wav, m4a, original, best | None |
Transcript
| Option | Type | Default | Allowed values | Limits |
|---|---|---|---|---|
transcription.mode | enum | fast | fast, quality, meeting-intelligence | None |
Options payload with all capabilities
Use this shape when you want to explicitly configure every supported output for this source type.
{
"extraction": {
"selectedCapabilities": [
"audio.metadata",
"audio.artwork",
"audio.chapters",
"audio.chapterAudio",
"media.transcript"
],
"includeManifest": true,
"capabilityOptions": {
"audio.chapterAudio": {
"audioFormat": "mp3"
},
"media.transcript": {
"transcription.mode": "quality"
}
}
}
}Estimate example
curl -sS -X POST "https://api.tools.fast/extract/estimate/m4a" \
-H "X-Fast-Api-Key: $API_KEY" \
-H "Content-Type: application/json" \
-d '{
"fileSizeMb": 25,
"durationMinutes": 3,
"options": {
"extraction": {
"selectedCapabilities": [
"audio.metadata",
"audio.artwork",
"audio.chapters",
"audio.chapterAudio",
"media.transcript"
],
"includeManifest": true,
"capabilityOptions": {
"audio.chapterAudio": {
"audioFormat": "mp3"
},
"media.transcript": {
"transcription.mode": "quality"
}
}
}
}
}'Extract example with all options configured
curl -sS -X POST "https://api.tools.fast/extract" \
-H "X-Fast-Api-Key: $API_KEY" \
-F "[email protected]" \
-F 'options={
"extraction": {
"selectedCapabilities": [
"audio.metadata",
"audio.artwork",
"audio.chapters",
"audio.chapterAudio",
"media.transcript"
],
"includeManifest": true,
"capabilityOptions": {
"audio.chapterAudio": {
"audioFormat": "mp3"
},
"media.transcript": {
"transcription.mode": "quality"
}
}
}
}'Machine-readable discovery
GET /options/m4a
GET /extractors/m4a