Which problems can come with the Substack audio post?
An audio post is made in the web version of the publication: Create and then Podcast. The engine does not change the file of the Substack audio post; it reads it as it is and writes the minutes.
Substack
Substack audio post to file in English
Substack audio post to file in English: send the file and get the text with the timecodes. One file may be up to 30 minutes on the free plan, no minute limit on Pro.
3 files a day up to 30 minutes, free99+ languagesSpeaker separation and timestamps
In short
The Substack audio post becomes the minutes: the engine reads the English speech and the sections Attendees, Agenda, Discussion by item are written from the transcript. The free plan gives 3 files a day of up to 30 minutes.
How to get the file and turn it into file
- 1
Record or upload the file
The audio is recorded or uploaded as an MP3, a WAV or an ACC file, and the processing of the file is waited for
- 2
Hand the file over
The file of the Substack audio post is sent as an attachment; the language of the speech is English, and the minutes comes back in the export of the service.
- 3
Turn the text into the minutes
The ready instruction reads the transcript of the Substack audio post as the person who keeps the record, and the minutes comes in the sections Attendees, Agenda, Discussion by item.
- 4
Mark the language of the speech
The recording of the Substack audio post is in English, and that is one of the 99+ languages the engine reads; the setting of the widget says English and the minutes follows.
- 5
Check the file before the upload
The transcript of a post can be edited, and a transcript file of the author can be uploaded as a .txt, .srt or .vtt file
What comes back from the engine
- TXT
One segment per line, the way a person wrote it down. It is the format to paste into a ticket, a chat or a document.
- TXT, CSV
The start and the end time of every segment, and the speakers named separately when you ask for it.
- SRT, VTT
SRT and VTT with the time of every line, so the recording can carry its own subtitles.
- Markdown, DOCX
The transcript is edited through the API and exported as Markdown for a wiki, or as DOCX for a review.
What Substack keeps, and what it says about it
| What | What the platform says |
|---|---|
| Where the file is | An audio post is made in the web version of the publication: Create and then Podcast. |
| What the file is | The audio file is recorded in the app or uploaded, and the transcript is opened with the transcript icon when the file has been processed. |
| What can go wrong | A video post is recorded in the browser with the Recording Studio of Substack or uploaded with Select file. |
| What the platform says | The audio file of a post is an MP3, a WAV or an ACC file. |
| What the platform says | The transcript of a post can be edited, and a transcript file of the author can be uploaded as a .txt, .srt or .vtt file. |
| Length of one file | up to 30 minutes on the free plan, no minute limit on Pro |
| Free plan | $0: 3 files a day, up to 30 minutes per file, no card |
| Pro plan | $10 a month when you pay yearly ($120 a year), or $20 a month |
The case
What the recording does not give you
The audio file is recorded in the app or uploaded, and the transcript is opened with the transcript icon when the file has been processed. The Substack audio post is read by the engine in English, and the minutes is written from the text, not from a guess.
Tips
A name that was never said in the Substack audio post stays out of the minutes.
Mark the language of the speech of the Substack audio post.
A file over 30 minutes has to be cut into parts; the Pro plan takes a recording of any length.
The recommended maximum size of a video upload is 20 GB, with a H.264 codec and an AAC audio codec.
Questions about Substack audio post and file
What does the Substack keep for the Substack audio post?
The recommended maximum size of a video upload is 20 GB, with a H.264 codec and an AAC audio codec. The file of the Substack audio post is the input of the engine, and the minutes is written from it.
What comes back after the English Substack audio post is read?
the minutes in the sections Attendees, Agenda, Discussion by item, with the time of every line of the recording of the Substack audio post.
How long may the file be, and how much is free?
One file may be up to 30 minutes on the free plan, and the free plan gives 3 files a day for the minutes.
Where does the file of the Substack audio post wait?
On the Substack. The facts of the table above name the place where the file of the Substack audio post is kept and the way it comes off.
Related pages
The same task on substack audio to text video to blog post ru
The same task on another recording, with the same steps and the same sections.
Meeting minutes ready to fileThe page of the task: the instruction that is written for it and an example of the answer.
Transcribe audio to textWhat the service does with a file: the formats of the export, the limits and the plans.
Sources
- SSubstack help: how can I generate a transcript of an audio post (read 2026-10-25)support.substack.com · checked
- SSubstack help: guide to video posts on Substack (read 2026-10-25)support.substack.com · checked
- TTranscription service page (read 2026-10-25)transcrib.si · checked
- TPricing page (read 2026-10-25)transcrib.si · checked
Reading: 4 minutesUpdated 
Transcribsi editorial team
Drop a recording — the text arrives in a minute
Speakers by name, a time on every line, export to TXT, SRT, VTT, CSV and Markdown.
3 files a day up to 30 minutes, free99+ languagesSpeaker separation and timestamps