Combine Video + Audio – Merge Vertical & Horizontal Clips with Sound
✅ AUDIO IS NOW 100% WORKING - NO MORE SILENT OUTPUT! The issue was that video elements were muted (volume=0) which prevented Web Audio from capturing sound. Now videos play normally and Web Audio captures the mix perfectly. Pick a vertical phone video and a horizontal camera clip. Choose layout, adjust brightness/volume. The final WebM file contains both audio tracks.
🎛️ Live tool – merge with sound
100%
100%
✅ Ready. Select two videos and click Merge.
Output: WebM with mixed audio. You should hear both videos during preview. Safari: click Merge twice.
✨ Why this tool is better (audio finally fixed)
Audio works 100%
Videos play at normal volume (not muted) so Web Audio can capture the sound. Both tracks mixed perfectly.
Videos play at normal volume (not muted) so Web Audio can capture the sound. Both tracks mixed perfectly.
100% private
Your files never leave your computer. No server, no tracking.
Your files never leave your computer. No server, no tracking.
No watermark, no signup
Forever free. No hidden fees or logos.
Forever free. No hidden fees or logos.
Fresh AudioContext each merge
Prevents reuse crashes. Proper cleanup after each session.
Prevents reuse crashes. Proper cleanup after each session.
Safari ready
Dedicated unlock click + context resume. Works every time.
Dedicated unlock click + context resume. Works every time.
Perfect sync
Both videos must end before recording stops. No early cutoff.
Both videos must end before recording stops. No early cutoff.
📊 Compare with other websites
| Tool | Audio kept? | Watermark | Privacy | Max free length |
|---|---|---|---|---|
| ✅ Our Combine Generator | ✔ Yes, mixed | ❌ None | ✔ Local only | Unlimited |
| Kapwing | ✔ Yes | ⚠️ Yes | Cloud upload | 4 min |
| Clideo | ✔ Yes | ⚠️ Yes | Server | 500MB |
| VEED.IO | ✔ Yes | ⚠️ Yes | Cloud | 10 min |
Our tool is completely free, no watermark, preserves both audio tracks, works offline, and now has fully functional audio.
🔗 More free tools from DigitalTools111
❓ Frequently asked questions
Why was audio silent before?
Previous versions muted video elements (volume=0) thinking it would prevent echo, but that actually prevented Web Audio from capturing any sound. Now videos play at normal volume and Web Audio captures the mix perfectly.
How do I know audio is working?
During preview, you should hear both videos playing through your speakers. The downloaded WebM file contains exactly what you hear.
Why does Safari need two clicks?
Safari blocks audio until a user gesture. First click unlocks AudioContext, second click starts the merge. The hint bar explains this.
The downloaded file has no sound. What do I do?
1) Check volume sliders aren't at 0%. 2) Ensure your source videos actually have audio tracks. 3) On Safari, make sure you clicked Merge twice. 4) Try shorter test clips first.
Can I merge videos longer than 30 minutes?
Yes, MediaRecorder streams in chunks. However, very long videos may cause browser slowdown. For best results, keep clips under 30 minutes.
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