Add audio or background music to video
Overlay background music or narration on a video and adjust where the audio starts and which part to use. You can change the volume of the original video and added audio separately, and set fades or muting. Preview how the video and audio overlap, then save them as a video.
What you can do
Adjust original and added audio separately
You can set the volumes separately, for example to keep speech while lowering background music, or to remove the original audio and use only music.
Play the part you need from any position
Specify separately which range of the audio to use and where it starts playing in the video.
Make the beginning and end of the audio smooth
Use fade-in and fade-out to adjust how the audio starts and ends.
How to use
Choose video and audio
Add the base video and the background music or narration to overlay.
Set volume and start position
Adjust the volumes of the original video and added audio, and specify where the audio plays in the video.
Adjust the selected range and fades
Trim the beginning and end of the audio as needed, and set fades at the start and end.
Check the overlaid audio and save
Check the volume balance and timing in the preview, then save the video with audio.
Useful when
Add background music to an introduction video
Overlay music that suits the video's mood, and adjust the volume so speech is not drowned out.
Overlay narration on a video
Add prepared narration at the required position in a presentation or instructional video.
The differences between original audio, start position, and fades
Original and added audio have separate settings
You can keep added background music or narration even when muting the original video. Excessively high volume may cause clipping, so check the overlaid result.
“Playback start position” and “Selected range”
The playback position is a time in the video. The selected range specifies which part of the audio file to use. For example, playing seconds 5–9 of the audio from second 2 of the video overlaps seconds 2–6 of the video.
Fades gradually change the volume
Fade-in applies to the beginning of the selected audio, and fade-out to the end. After changing the selected range, check the duration and how it sounds.
Frequently asked questions
Can I remove the original video audio and keep only background music?
Yes. Mute “Original video audio” to overlay only the audio you add.
Can I change the duration or start position of added audio?
Yes. You can specify both the range of audio to use and where it starts playing in the video. Multiple audio files can also be adjusted individually.
File handling
- Input
- The original video and audio files are not overwritten
- Output
- Video with the specified audio overlaid