Substack audio post to show notes in English
Substack audio post to show notes 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.
Transcribsi reads the Substack audio post in English and writes the show notes. The file comes off the platform as it is, one file may be up to 30 minutes, and the free plan gives 3 files a day.
How to get the file and turn it into show notes
- 1
Create the audio post
In the web version of the publication the author opens Create and then Podcast
- 2
Send the file to the engine
The file of the Substack audio post is attached in the widget of this page, and the speech is marked as English; the answer comes back as the show notes.
- 3
Ask for the show notes
The instruction of the show notes is written for this task already: it reads the text of the Substack audio post and asks for Episode summary, Chapters, Quotes, and it keeps every claim to the transcript.
- 4
Name the language of the speech
The engine reads 99+ languages; the speech of this Substack audio post is in English, and the widget carries that setting for the show notes.
- 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
- 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
What the recording does not give you
An audio post is made in the web version of the publication: Create and then Podcast. The Substack audio post is only the input: the engine reads the English speech and writes the show notes out of the transcript.
Tips
A name that was never said in the Substack audio post stays out of the show notes.
The engine does not translate the Substack audio post from English.
Rename the file of the Substack audio post before you send it.
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 show notes
What does the Substack say about the Substack audio post?
An audio post is made in the web version of the publication: Create and then Podcast. The engine reads the English speech of the Substack audio post and writes the show notes from that text.
Which problems can come with 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 engine does not change the file of the Substack audio post; it reads it as it is and writes the show notes.
What comes back after the English Substack audio post is read?
the show notes in the sections Episode summary, Chapters, Quotes, 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 show notes.
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 another recording, with the same steps and the same sections.
Podcast episode to show notesThe 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.