Question 1

How do I merge MP4 files?

Accepted Answer

Drag your MP4 files onto the box above, or click Select files to choose them. Drag the files into the order you want. Click Merge files and then Download.

Question 2

Why is merging my phone videos so fast?

Accepted Answer

Videos from the same phone usually share the same size, frame rate and codec. MakeAudio then joins them as they are, without re-encoding, which takes about a second and keeps every frame exactly as recorded.

Question 3

Can I merge MP4 files with other kinds of video?

Accepted Answer

Yes, with Merge videos, which takes MP4, MOV, WebM and MKV clips together.

Question 4

What if my clips have different sizes?

Accepted Answer

Then they are re-encoded to the size of the first clip, and clips with a different shape get black bars. In our tests on a recent computer, re-encoding took about 8 seconds for each minute of 1080p video.

Merge MP4 files

Frequently Asked Questions

Frequently Asked Questions

How do I merge MP4 files?

Why is merging my phone videos so fast?

Can I merge MP4 files with other kinds of video?

What if my clips have different sizes?

Is it free, and is my video uploaded?