What does the Substack keep for the Substack audio post?
An audio post is made in the web version of the publication: Create and then Podcast. The file of the Substack audio post is the input of the engine, and the written notes is written from it.
Substack
Substack audio post to structured notes in Russian
Substack audio post to structured notes in Russian: 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
With the Substack audio post the engine writes the written notes: the transcript first, then the sections Thesis, Key ideas, Definitions. The speech is in Russian, the free plan gives 3 files a day, and one file is up to 30 minutes.
How to get the file and turn it into structured notes
- 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
Upload the file
The engine takes the Substack audio post from the widget of the page; the speech is in Russian, and the written notes comes back with the timecodes.
- 3
Run the instruction of the written notes
The transcript of the Substack audio post goes to the instruction that is written for the written notes, and the sections of the answer are Thesis, Key ideas, Definitions.
- 4
Mark the language of the speech
The speech of the Substack audio post is Russian, one of the 99+ languages the engine reads, and the widget is left on Russian while the written notes is written.
- 5
Check the file before the upload
The audio file of a post is an MP3, a WAV or an ACC 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 file of the Substack audio post is what the Substack keeps. 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 engine reads the Russian speech, and the sections Thesis, Key ideas, Definitions come out of it.
Tips
Read the sections of the written notes before you send it on.
The engine does not translate the Substack audio post from Russian.
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 structured notes
What does the Substack say about 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 reads the Russian speech of the Substack audio post and writes the written notes from that text.
What comes back after the Russian Substack audio post is read?
the written notes in the sections Thesis, Key ideas, Definitions, with the time of every line of the recording of the Substack audio post.
What do I get without a card?
3 files a day of up to 30 minutes every day, and the export of the text in the formats of the service, so the written notes comes back in every one of them.
Do I need an account for the Substack audio post?
The file of the Substack audio post and the widget are enough: the engine reads the Russian speech and writes the written notes.
Related pages
- The same task on substack audio to text sales call summary enThe same task on another recording, with the same steps and the same sections.
- Lecture to structured 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.
3 files a day up to 30 minutes, free99+ languagesSpeaker separation and timestamps