<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>

CC BY-SA 4.0
2021-08-05T04:15:59.417Z
2021-08-05T04:15:59.417Z
Abdullah Ibn Fulan
<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>

<ffmpeg><video-editor>
Join video-file m4v and audio file m4a. to make a mp4?
hasoma
# 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


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## 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.


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