Supported audio and video file formats

Accepted public audio and video file URLs for the TranscriptFetch API.

Send a public HTTP or HTTPS URL that points directly to an audio or video file. TranscriptFetch downloads the media and returns the spoken content through the same transcript response used for supported social platforms.

Accepted formats

Video files

Input format	Example
MP4	https://media.example.com/interview.mp4
M4V	https://media.example.com/interview.m4v
WebM	https://media.example.com/interview.webm
MOV	https://media.example.com/interview.mov
Matroska video	https://media.example.com/interview.mkv
MPEG video	https://media.example.com/interview.mpeg
3GP	https://media.example.com/interview.3gp

Audio files

Input format	Example
MP3	https://media.example.com/interview.mp3
M4A	https://media.example.com/interview.m4a
WAV	https://media.example.com/interview.wav
FLAC	https://media.example.com/interview.flac
Ogg audio (.ogg or .oga)	https://media.example.com/interview.ogg
Opus	https://media.example.com/interview.opus
AAC	https://media.example.com/interview.aac
MPGA	https://media.example.com/interview.mpga

Endpoints available for this source

POST/api/v2/transcripts/video

Fetch a transcript (YouTube, TikTok, Instagram, or file URL)

Accepted input: video

Open endpoint reference

Availability requirements

The URL must be reachable without cookies, browser login, custom request headers, or access to a private network. Signed URLs are accepted while they remain valid. Internal, loopback, link-local, and private-network destinations are blocked.

Example request

Use the same input with REST or either official SDK.

curl -X POST https://transcriptfetch.com/api/v2/transcripts/video \
  -H "Authorization: Bearer $TRANSCRIPTFETCH_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"video":"https://media.example.com/interview.mp3"}'