Automatically Extract Audio out of Video Files

Follow these steps if you are on Windows 32 bit:

1. Click the following button to download a .zip file, named speechnotes_ffmpeg.zip
   speechnotes_ffmpeg.zip
2. Copy speechnotes_ffmpeg.zip to your C hard drive
3. Extract the zip file.
4. Verify that you now have a folder named speechnotes_ffmpeg directly within your C hard drive. If you do - continue.
5. Click the following button to download a .bat file, named speechnotes_audio_extractor.bat
   speechnotes_audio_extractor.bat
6. Copy speechnotes_audio_extractor.bat to any directory that has the video files you want to extract the audio from.
7. Double click the copied speechnotes_audio_extractor.bat file in order to run it. It should automatically open a command line window and run there.
8. Once finished, it creates a folder named speechnotes-output-audio-only where in it are all the extracted audio only out of the videos.
9. Have more video files is a different directory? Simply repeat 'Copy speechnotes_audio_extractor.bat to any directory...'  and on with the other directory.

Advanced Notes

Supported Video Files

• .mp4
• .mpeg
• .avi

Don't have a C hard drive?

You may use a different drive, but, you will have to edit the .bat file, and replace every 'C://' with your drive of choice.

Follow these steps if you are on Mac

* Please note, these instructions will require you to work with the command-line terminal. It's very simple - we'll walk you through each step, with images - so please bare with us. *

(1) Open Terminal

On your Mac, click the Launchpad icon in the Dock / or launch 'Spotlight Search', type 'Terminal' in the search field, then click Terminal.

(2) Install homebrew & ffmpeg

(** In case you already have ffmpeg installed on your Mac, skip this step and continue straight to Got ffmpeg - lets extract some audio section)

(2a) Install homebrew

- Copy the following into your Terminal and press 'Enter' afterwards:
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"

(2b) Install ffmpeg

Once 'homebrew' is installed - type the following in your Terminal:
brew install ffmpeg

(3) Got ffmpeg - lets extract some audio

1. Open the terminal in the specific folder where your video files are located. One simple way to do that is:
   1. Type (without Enter) cd  (note the 'space' after 'cd') and then
   2. Drag from Finder the folder which contains the video files into the Terminal

   

   3. Click 'Enter'
   4. You should now see the name of that directory in the new line that the Terminal's caret is on.
2. In the terminal, copy the following and click 'Enter': echo "Making speechnotes-output-audio-only directory"
mkdir -p speechnotes-output-audio-only
echo "Success making speechnotes-output-audio-only directory"

COUNTER=0;
echo "Searching for video files in directory"
for input in *.avi *.mp4 *.mpeg *.mov; do
# ffmpeg -i "$input" -vn -acodec copy "speechnotes-output-audio-only/$input"
if [ -f "$input" ]; then
COUNTER=$((COUNTER + 1))
echo "Found and converting $input"
ffmpeg -i "$input" -vn -acodec copy "speechnotes-output-audio-only/$input" -nostdin -loglevel panic
fi
done
echo "Done. Found total $COUNTER Video files in directory"




3. Now you should have created a folder named 'speechnotes-output-audio-only' where in it are audio-only files. Congrats.
4. Got more video files to convert in a different directory? Simply repeat Got ffmpeg - lets extract some audio for any directory you need. No need to install brew nor ffmpeg again.