About Video Voice Over & Audio Replacer
The Video Voice Over & Audio Replacer on wesharekh lets you replace, lower, or mix the original audio of a video with one or more new audio tracks. It is useful for voiceovers, dubbing, narration, background music, translations, and other situations where the video should remain the same while its sound is changed.
You can add multiple audio clips and choose when each clip should begin. This makes the tool useful for videos that need narration or different audio sections at specific points in the timeline.
Key Features
Replace Original Video Audio
Set the original video volume to 0% when you want to completely mute the existing soundtrack and use your new audio instead.
Add Voiceover While Keeping Original Sound
Lower the original audio volume and add a voice recording on top. This can be useful for narration, tutorials, commentary, translations, and video explanations.
Multiple Audio Clips
Add multiple voice or audio files and position them at different points in the video. Each clip can be assigned its own starting time.
Adjust Original Audio Volume
Control how much of the original soundtrack remains in the final video. A lower volume can make a voiceover easier to hear, while 0% can be used for a complete audio replacement.
Video Stream Preservation
The video portion can be copied without re-encoding while the audio is processed and mixed. When the source video is compatible with this workflow, this can reduce unnecessary video quality loss and processing time.
Browser-Based Processing
The tool is designed to process compatible video and audio files directly in your browser rather than requiring them to be uploaded to a remote media-processing service.
How to Replace or Add Audio to a Video
- Step 1: Click Select Target Video and choose the video you want to edit.
- Step 2: Adjust the Original Video Volume. Set it to 0% for a full replacement, or choose a lower level when you want the original sound to remain in the background.
- Step 3: Click Add Voice / Audio Clip and select an audio recording or music file.
- Step 4: Set the starting time for each audio clip so it begins at the desired position in the video.
- Step 5: Add additional audio clips if required and arrange their start times.
- Step 6: Click Mix Audio into Video to create the final video.
- Step 7: Preview the result and download the finished MP4 file.
Complete Audio Replacement vs Voiceover
Complete Audio Replacement
If you want the original soundtrack removed completely, set the original video volume to 0%. Your added audio becomes the primary soundtrack for the resulting video.
Voiceover
If you want to keep some original sound, lower the original volume and place your narration or voice recording over it. This can create a balance between the speaker and the original background audio.
Background Music
For background music, keep the original audio at a low level if you want to retain natural sounds or dialogue. Adjust the volume so the background track does not overpower important speech.
What Can You Use This Tool For?
- Adding narration to tutorial videos.
- Replacing the original language with a translated voiceover.
- Dubbing short videos into another language.
- Replacing unwanted background audio.
- Adding background music to existing footage.
- Adding commentary to recorded videos.
- Adding multiple voice clips at specific timestamps.
- Creating voiceover versions of social media videos.
- Lowering original music underneath spoken narration.
Using Multiple Voice Clips
Multiple audio clips can be useful when your narration is divided into several sections. Instead of creating one long recording, you can add separate clips and assign each one a starting position.
For example, a tutorial could contain one introduction at the beginning, another explanation at 30 seconds, and a final instruction near the end. Each recording can be positioned independently on the video timeline.
How to Choose the Original Audio Volume
- 0%: Completely mute the original audio for a full replacement.
- 10%–30%: Keep a small amount of original sound underneath narration.
- 30%–50%: Keep more background sound while adding a voiceover.
- 100%: Keep the original audio at its selected level.
The best setting depends on the source recording and the volume of the added voice or music. Always preview the result before publishing.
Audio Timing and Synchronization
Each added audio clip has a starting position that determines when it begins playing relative to the video timeline. Carefully choosing the start time helps keep narration, dialogue, music, and other sound effects synchronized with the visual content.
When adding several clips, check that their start times do not unintentionally overlap. Overlapping audio can cause multiple tracks to play simultaneously and make the final mix difficult to understand.
Privacy and Local Processing
The tool is designed for client-side media processing. Compatible video and audio files can be processed in your browser rather than requiring them to be uploaded to a remote audio or video editing server.
Because video and audio processing uses your device's CPU and memory, larger videos and longer audio recordings may require additional processing time and available memory.
Frequently Asked Questions
Can I completely remove the original video audio?
Yes. Set the original video volume to 0% to mute the original soundtrack and use your added audio instead.
Can I keep the original audio and add a voiceover?
Yes. Lower the original audio volume and add your voice recording. This allows the original sound to remain underneath the narration.
Can I add more than one audio clip?
Yes. You can add multiple audio clips and specify their starting positions in the video.
Can I use this for dubbing?
Yes. You can mute or reduce the original soundtrack and add recorded voice tracks for another language or a new narration.
Can I add background music?
Yes. Add the music track and adjust the original audio level to create the desired balance between music, narration, and the original sound.
Does replacing audio reduce video quality?
When the source video is compatible with stream copying, the video stream can be copied without re-encoding while the audio is processed. This avoids unnecessarily recompressing the video portion.
Are my video and audio files uploaded?
The tool is designed for browser-based processing, allowing compatible media files to be processed on your device rather than requiring a remote media-processing service.
Can I use the tool on my phone?
Yes. The tool can be used in a modern mobile browser. Larger videos and longer audio files may require more memory and processing time.
Tips for Better Voiceovers
- Record voiceovers in a quiet environment for clearer speech.
- Lower the original audio when narration needs to be easy to understand.
- Use clear and consistent audio levels between multiple voice clips.
- Check the starting time of every clip before rendering.
- Preview the finished video before publishing or sharing it.
- Keep the original video and audio files until you are satisfied with the final mix.