Add Audio to Video

Add audio to video online free.

Why choose online UniConverter audio video mixer

Music video editor for social media

Easy to add music to your youtube or instagram videos.

Free online video maker with music

Merge video and audio totally online without any other tool installed.

The professional video audio editor

You can edit the audio by trimming,looping,or changing the volume after adding it.

Any format supported

The song combiner supports all the popular audio formats like MP3, WAV, FLAC, OGG, WMA, M4A, M4R and others.

Additional features

Trim video to get your desired segment and select an appropriate output format.

Privacy protection

Online UniConverter deleted the uploaded files from our servers after 24 hours automatically.

Plans for mixing audio and video online

Choose your right plan to remove all limitations.

No Registered Plan

Mix 10 Video Files

Maximum Size: 100MB / Each

Normal Speed

Free Registered Plan

Mix 25 Video Files

Maximum Size: 100MB / Each

Normal Speed


Premium Plan

Unlimited Times

Maximum Size: 1GB / Each

10x Faster Speed

From $2.99/month

FAQ for adding audio to video

Online Video Merger quality rating:
4.7 (162,357 Votes)
You have to convert and download at least 1 file to rate!
We’ve already converted xxx ,xxx ,xxx files with a total size of 10,124 TB