Extract Audio from Video
Upload another video as your audio source — we'll automatically extract its audio track.
Merge Audio with Video
Combine audio and video files in seconds
Why Choose Our Free Audio Video Merger?
Combine audio and video files in seconds — no software to install, no account needed. Just upload, merge, and download.
- 100% free to use — no hidden fees
- Works directly in your browser
- Available through your Magica account.
- Easy drag-and-drop upload
- Extract audio from another video automatically
- Replace existing audio or mix with new track
- Adjust audio volume levels
- Preview before you download
- Your files stay private — nothing uploaded to servers
How to Add Audio to Video in 4 Easy Steps
- 01
Attach Your Video
attach your video file in the chat. We support MP4, MOV, WebM, and more.
- 02
Add Your Audio Source
Upload an audio file (MP3, WAV, AAC) or even another video — we'll extract its audio automatically!
- 03
Adjust Settings
Choose to replace the original audio or mix it with your new track. Adjust volume levels as needed.
- 04
Download Your Merged Video
Click Download and your video with new audio is ready! It saves as an MP4 file that works everywhere.
What Makes Our Audio Video Merger Special
Multiple Audio Options
Replace original audio completely or mix your new audio with the existing sound.
Volume Control
Adjust the volume of both original and new audio to get the perfect mix.
High Quality Output
Your video quality stays excellent — we only process the audio, not the video.
Perfect For Everyone
Whether you're adding background music or replacing bad audio, our merger tool makes it easy.
Content Creators
Add background music or voiceovers to your YouTube, TikTok, or Instagram content.
Social Media Users
Replace phone video audio with trending songs or better quality sound.
Small Business Owners
Add professional narration or music to promotional videos.
Teachers & Presenters
Add voiceover commentary to screen recordings or presentations.
Podcasters
Combine video recordings with separately recorded high-quality audio.
Anyone with Videos
Fix bad audio, add music, or combine separate audio and video files easily.
Common Questions
Is this audio video merger really free?
This workflow is available through Magica; access and usage follow your Magica plan.
What audio formats are supported?
We support MP3, WAV, AAC, OGG, M4A, and FLAC audio files. You can also attach a video file (MP4, MOV, WebM) and we'll extract its audio automatically!
Can I use audio from another video?
Yes! Just attach a video file in the audio section. We'll automatically extract the audio track and merge it with your main video. Great for swapping audio between clips!
Can I keep the original video audio and add new audio?
Yes! You can choose to replace the original audio completely, or mix both audio tracks together. When mixing, you can adjust the volume of each.
What if audio and video have different lengths?
The output always matches your video duration. If audio is longer, it gets trimmed. If audio is shorter, you can choose to either pad with silence or loop the audio. In mix mode, original audio continues automatically.
Will the video quality be reduced?
No! We use smart encoding that preserves your video quality. Only the audio track is modified.
How long does it take to merge audio and video?
Processing time depends on your video length and device speed. Most videos under 10 minutes are ready in 1-3 minutes.
Do you save or store my files?
No, never. All processing happens right in your browser. Your files are never uploaded to our servers, so your content stays completely private.
Can I use this on my phone?
Yes! Our audio video merger works on smartphones, tablets, and computers. Just open it in your browser and you're ready to go.
Ready to make it?
Help me use Merge Audio with Video. First ask me to attach video. Then ask for my preferences, complete the task, and return the finished result.Attach filesConnect tools
