How to transcribe an mp4 file

Use these free tools to extract the audio from an mp4 video and automatically transcribe it into a Word document.

Step 1 - Extract the audio to an mp3.
Step 2 - Transcribe the mp3 using Word.

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Click Media > Convert/Save
Click the Add button and browse to select the file.
Click Convert/Save to bring up the Convert window. Set the Profile to Audio-MP3 and click the wrench icon.
On the Enscapsulation tab, select RAW and then click Save.
Back on the Convert window, set the Destination file by clicking Browse. You can change the existing name by changing the end to mp3.
Now click Start and wait for it convert. The main VLC Player window will show a progress bar, as if you were playing the file.
After it's done, look in the destination folder to find your mp3 file.

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Start Word in a browser via https://portal.office.com.
Create a blank document.
On the toolbar click Dictate > Transcribe. On the side panel click Upload audio and browse for the mp3 file.
Wait while it uploads to OneDrive. It will then start transcribing, which could take 5+ minutes depending on length.
When done, the text will appear in the sidebar. Click the button ‘Add to document’ at the bottom to add to the blank Word doc. You can choose to a few options such as pasting it with speakers and timestamps.
The document will be saved to your SU OneDrive account.