Video Audio Merge takes a video file and a separate audio track and joins them into a single file you can download and use right away. It solves one of the most common post-production problems: you have footage in one file and sound in another, and you need them combined without opening a full editing suite. You can replace the original audio entirely or mix the new track on top of the existing sound. A volume multiplier lets you control the level of the added audio before the file renders, and you pick the output format from MP4, MOV, AVI, and MKV. Codec selection gives you control over file size and compatibility, with H264, H265, and VP9 for video and AAC or MP3 for audio. The tool fits into almost any video workflow. Record your screen, capture footage on a camera, produce a voiceover in a separate session, then bring them together here without installing any dedicated editing software. Upload, configure, and download in under a minute.
Video Audio Merge is a browser tool that joins a video file and an audio file into a single finished clip. It is built for anyone who ends up with footage and sound in separate files and needs a quick way to combine them without opening a full editing application. On Picasso IA, the process takes under a minute: upload both files, set your preferences, and download the merged result. Whether you are adding a voiceover to a tutorial or replacing the music on a finished video, this tool handles the merge without any setup.
Do I need programming skills or technical knowledge to use this? No, just open Video Audio Merge on Picasso IA, adjust the settings you want, and hit generate.
Is it free to try? Yes. You can upload and merge video and audio files at no cost, directly in the browser, without creating an account.
How long does it take to get results? Most merges finish in a few seconds. Longer files or lossless codec settings may add a moment to the processing time, but there is nothing manual to wait on.
What output formats are supported? You can download the merged clip as MP4, MOV, AVI, or MKV. MP4 with H264 is the default and plays back on virtually every device.
Can I keep the original audio and add new audio at the same time? Yes. Turn off the replace audio option and both tracks are mixed together in the output rather than one replacing the other.
What happens if my video and audio files are different lengths? You decide which one sets the final duration. Pick video to trim or pad the audio to match the footage, or pick audio to let the audio length drive the output.
Where can I use the output files? The downloaded file contains no watermarks and is in a standard format, so you can upload it to any platform, hand it to a client, or drop it into another project.
Everything this model can do for you
Replace the original soundtrack entirely or blend the new audio with the existing track.
Set an exact multiplier before rendering to balance narration, music, or sound effects at the right level.
Export your merged file as MP4, MOV, AVI, or MKV to match any platform or device requirement.
Select H264, H265, or VP9 for video and AAC or MP3 for audio to suit your quality needs.
Output length follows either the video or the audio clip, avoiding any unwanted cutoffs.
Works with common video formats (MP4, MOV, AVI) and audio formats (MP3, WAV, AAC).
Runs entirely in the browser with no editing application to download or configure.
User-friendly for both simple and advanced editing needs
