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Hi, 

I want to create a zap that transcribes slack voice messages to text via OpenAI's Whisper.

I can extract the link to a voice message from the slack message with the fields url_private or url_private_download (both links end with .mp4) but I still receive OpenAI’s feedback: 

Failed to create a transcription in OpenAI (GPT-3, DALL·E, Whisper)
The app returned "Invalid file format. Supported formats: r'm4a', 'mp3', 'webm', 'mp4', 'mpga', 'wav', 'mpeg']".

 

Here is my exact setup: 

  1. Trigger: New Message Posted to Channel in Slack channel

  2. Filter: Only continue if the text contains .mp4

  3. OpenAI: From the slack message, I take the input field url_private (ending with .mp4) and ask to transcribe it

  4. → I receive the above error

 

Anyone else who had this problem and found a solution?

Hi @Tim_wienboeker 

Good question.

Please post detailed screenshots with how your Zap steps are configured along with the encountered error in order for us to have full context, thanks.

@Tim_wienboeker 

This is likely why...https://api.slack.com/types/file#auth

 

Authentication

Authentication is required to retrieve file URLs.

The url_private property points to a URL to the file contents. Editable-mode files will also have a url_private_download parameter, which includes headers to force a browser download. Both url_private and url_private_download require an authorization header of the form:

 
Authorization: Bearer A_VALID_TOKEN

In this case, A_VALID_TOKEN is representative of a real OAuth token, bearing at least the files:read scope. Learn more about OAuth Scopes.

Fields providing URLs that require this form of authentication include:

  • url_private
  • url_private_download
  • thumb_64
  • thumb_80
  • thumb_160
  • thumb_360
  • thumb_480
  • thumb_720
  • thumb_960
  • thumb_1024

Please note that the url and url_download parameters have been deprecated. Please use url_private and url_private_download instead.

 

@Tim_wienboeker 

You can try using this Slack action:

 

@Tim_wienboeker

Actually, try using a “File” data point from the Slack step.

Search for “exists but not shown”.

This is a temp file that is available for you.

NOTE: There may be more than 1 file on a Slack message, in that case you would have to use the Looping app to iterate thru each.

 

Thanks a lot @Troy Tessalone - it worked!

Hello,

I am running into the same issue as Treo Tessalone but I cannot find the “file” data point that you mention ​@Tim_wienboeker.

I’ve tried with all the data point that link to the .mp4 audio file without success.

If you have any suggestions I’d be very thankful,
Cyrille

​@Cybergorille 

Probably best to post your own topic and include screenshots to give more context.

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