Add Audio to Video Tools Compared: Submind vs Kapwing, Clideo, VEED & 123apps
Five tools that can add, replace or mute audio in a video, compared on where the file goes, what the free tier allows, and what happens to the picture.
Last updated: November 2, 2026
| Tool | Where it runs | Free limit | Output and watermark | Account | Video handling |
|---|---|---|---|---|---|
| Submind add-audio tool | On-device in the browser — the video never leaves your computer | 4 GB on Chrome and Edge, 1 GB elsewhere. No export timer | MP4 at the original resolution. No watermark | None | Video stream copied, not re-encoded |
| Kapwing | Browser editor | 2 GB upload, 4-minute free export, 720p | MP4 with a Kapwing watermark on free | Required | Re-encodes on export |
| Clideo | Browser editor | 500 MB per file on free | SD or HD with a Clideo watermark on free | No for a one-off export | Re-encodes the video |
| VEED | Browser editor | 1 GB upload, 10-minute export, 720p | MP4 with a VEED watermark on free | Required | Re-encodes on export |
| 123apps | Browser tool | Free daily limit and a smaller file cap; 500 MB reported | Download without a watermark | None | May re-encode on save |
Details come from each tool's own pricing or help page, read on 2 November 2026. 123apps does not publish its exact free file cap on the pricing page; the 500 MB figure comes from third-party reports. Prices, limits and features change without notice — check the vendor before you pay.
Which one should you choose?
Use Submind when the job is one of the three moves and you want the video to come back unchanged: replace the soundtrack, mix music under the original, or mute it. Try it here. Nothing is uploaded, and there is no export minute to spend.
Pick the mode you need: Replace audio · Mute video · Add music.
Use Kapwing when the audio change is part of a bigger edit: captions, cuts, text and a timeline. It is a fuller editor, and the free plan shows that in the watermark and the four-minute export.
Use Clideo when you want a simple browser tool and a one-off export without an account, and a 500 MB file is enough.
Use VEED when you need captions or translation next to the audio change, and you are willing to pay for a watermark-free 1080p export.
Use 123apps when you want a no-account, no-watermark export and the file fits its free daily limits.
When a paid tool is the better choice
Kapwing wins on editing. If the video still needs cuts, captions or a resize, an editor that also handles audio saves a round trip.
VEED wins on captions. Subtitle generation, translation and audio changes in one project is a real advantage for talking-head video.
123apps wins on simplicity. No account, no watermark, and a small set of tools that do one job each.
Clideo wins on a quick one-off. No sign-in, a familiar picker, and a result in about the time it takes to upload.
Submind is the wrong pick if you need a timeline, captions, transitions, multiple video tracks or a 3D edit. It does three audio moves and nothing else.
Free vs paid: what the limits actually mean
“4-minute export” on Kapwing is the real free wall, not the 2 GB upload. A four-minute clip fits. A five-minute clip does not, whatever its size.
“10-minute export” on VEED is paired with 720p. The file you get back is smaller than the one you sent, even when the only change is the audio.
“500 MB” on Clideo is a hard upload cap. A 4K phone clip can hit it in under a minute of footage.
“4 GB” on Submind depends on the browser. Chrome and Edge can stream the output straight to disk. Firefox and Safari keep it in memory, so the page caps those browsers at 1 GB rather than failing halfway.
“Copied, not re-encoded” on Submind means the video packets are written into the new MP4 unchanged. If the codec cannot live in MP4, the page says so and re-encodes to H.264.
Frequently asked questions
Yes. Submind and 123apps both export without a watermark. Submind has no export timer and no account. 123apps applies daily limits to free files. Kapwing, Clideo and VEED add a watermark on free exports.