Combine video with audio
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Local processing
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Tool 01
Quick tool
Combine video with audio
Upload a video and a new audio track. The result will keep the full video duration.
Source video
Choose video
MP4, WebM, MKV, MOV, AVI, M4V
New audio track
Choose audio
MP3, WAV, WebM, OGG, M4A, AAC, FLAC
Mix with the original sound
When enabled, both tracks will play together. When disabled, the original video sound will be muted.
Voiceover volume
Original sound volume
Voiceover start offset, seconds
Automatically lower the original sound during speech
The original track becomes quieter while the new voice is sounding.
Trim the result to the video duration
Disable this only when the audio is intentionally longer than the video.