Audio, Video Merging


Drag the video here (mp4, m4s, mov...)


Drag the audio here (mp4, mp3, m4s...)

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Tip: This tool runs entirely in your local browser, so processing large files may take time due to device performance. Thank you for your understanding!

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FAQ

No. The entire audio-video merging process is performed in your browser, with no files uploaded to the server or downloaded, fully protecting your data security and convenience.
The merging time depends on the size and complexity of the video and audio. In most cases, it can be completed in a relatively short time.
We support common video formats such as MP4, MOV, MKV, and common audio formats such as MP3, WAV.
You can check whether the video and audio files meet the supported format requirements, or try re-uploading the files for merging. If the problem persists, you can contact our technical support team.
The merging process will try to maintain the original video and audio quality and will not significantly affect the video quality.
Most modern browsers support this well, but for a better experience, we recommend using the latest version of mainstream browsers.