Answers.Body: <p><a href="https://handbrake.fr/docs/en/latest/advanced/queue.html" rel="nofollow noreferrer">Handbrake can queue</a> up a batch of files.</p>
  <p>FFmpeg is free and works on a mac, but you'd have to run it from Terminal.
  You can install it using <a href="https://brew.sh/" rel="nofollow noreferrer">Homebrew</a> for Mac.</p>
  <p>Once Homebrew is installed, go to Terminal and type</p>
  <pre><code>brew install ffmpeg
  </code></pre>
  <p>Then you should be able to change directory to wherever your files are by typing something like:</p>
  <pre><code>cd /Users/my.username/Movies
  </code></pre>
  <p>where my.username would be your username on that mac, and Movies would be whatever directory the files were in</p>
  <p>Then you can convert them by typing something like</p>
  <pre><code>ffmpeg -i input.mp4 output.webm
  </code></pre>
  <p>Where input.mp4 is your source file, and output.webm is your output file.</p>
  <p>To convert all the mp4 files in that directory you would enter</p>
  <pre><code>ffmpeg -i *.mp4 output.webm
  </code></pre>
  <p><a href="https://opensource.com/article/17/6/ffmpeg-convert-media-file-formats" rel="nofollow noreferrer">More info on selecting different codecs</a> etc.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2021-05-05T08:27:09.167Z
Answers.LastActivityDate: 2021-06-06T23:08:29.060Z
Answers.LastEditDate: 2021-06-06T23:08:29.060Z
Answers.UserDisplayName: tomh
Body: <p>I want to reduce the file size of a bunch of videos at once on my Mac.</p>
  <p>Would you know any free tool that does that or any way to automate a loop in Automator to pilot Handbrake to loop on a given folder?</p>
  <p>Thank you.</p>
  
Tags: <video><compression><automation>
Title: Compress multiple videos at once on a Mac
UserDisplayName: Goul
ThreadText: # Compress multiple videos at once on a Mac
  
  (Asked by: username_0 on 2021-05-04)
  
  I want to reduce the file size of a bunch of videos at once on my Mac.
  
  Would you know any free tool that does that or any way to automate a loop in Automator to pilot Handbrake to loop on a given folder?
  
  Thank you.
  
  **Tags:** video, compression, automation
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2021-05-05. Score: 1
  
  [Handbrake can queue](https://handbrake.fr/docs/en/latest/advanced/queue.html) up a batch of files.
  
  FFmpeg is free and works on a mac, but you'd have to run it from Terminal.
  You can install it using [Homebrew](https://brew.sh/) for Mac.
  
  Once Homebrew is installed, go to Terminal and type
  
  ```
  brew install ffmpeg
  
  ```
  
  Then you should be able to change directory to wherever your files are by typing something like:
  
  ```
  cd /Users/my.username/Movies
  
  ```
  
  where my.username would be your username on that mac, and Movies would be whatever directory the files were in
  
  Then you can convert them by typing something like
  
  ```
  ffmpeg -i input.mp4 output.webm
  
  ```
  
  Where input.mp4 is your source file, and output.webm is your output file.
  
  To convert all the mp4 files in that directory you would enter
  
  ```
  ffmpeg -i *.mp4 output.webm
  
  ```
  
  [More info on selecting different codecs](https://opensource.com/article/17/6/ffmpeg-convert-media-file-formats) etc.
  
  
  ---
  
  