Answers.Body: <pre><code>ffmpeg -i audiofile.m4a -i videofile.m4v  -c copy  combined.mp4
  </code></pre>
  <p>Here <code>-c copy</code> tells to copy the stream instead of re-encoding. So the streams are as before. It is fastest and lossless.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2021-08-05T04:15:59.417Z
Answers.LastActivityDate: 2021-08-05T04:15:59.417Z
Answers.UserDisplayName: Abdullah Ibn Fulan
Body: <p>What is best way, to join a Video-Only file, .m4v
  with m4a audio file, and output as mp4</p>
  <p>Want to join them, without losing original quality,
  both file have same time length.</p>
  <p>any good software.etc?</p>
  
Tags: <ffmpeg><video-editor>
Title: Join video-file m4v and audio file m4a. to make a mp4?
UserDisplayName: hasoma
ThreadText: # Join video-file m4v and audio file m4a. to make a mp4?
  
  (Asked by: username_0 on 2021-07-31)
  
  What is best way, to join a Video-Only file, .m4v
  with m4a audio file, and output as mp4
  
  Want to join them, without losing original quality,
  both file have same time length.
  
  any good software.etc?
  
  **Tags:** ffmpeg, video-editor
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2021-08-05. Score: 3 | Accepted answer
  
  ```
  ffmpeg -i audiofile.m4a -i videofile.m4v  -c copy  combined.mp4
  
  ```
  
  Here `-c copy` tells to copy the stream instead of re-encoding. So the streams are as before. It is fastest and lossless.
  
  
  ---
  
  