This video tool can help you add or replace background audio and music in a video file, you can replace the audio in the video, or just add new audio to the video while retaining the old. The resulting video has the same duration as the original video, and if the new audio is shorter than the source video, audio will automatically loop. You can set the volume and start position of the newly added audio. The output format is MP4 format.
- Replace Audio in Video, old audio in video will be removed.
- Keep Audio in Video, add new audio to the video as background music.
How To Use:
- Select a video file (such as *.mp4, *.mkv, *.avi, *.wmv, *.flv, *.mov, *.vob, *.3gp, *.rmvb, *.mts, *.m2ts, *.rm, *.divx, *.asf, *.webm and more).
- Select a audio file (such as *.mp3, *.wav, *.midi or *.wma).
- Click button "Add" to start upload your files.
- Once upload completed, converter will redirect a web page to show the mixed result.
Volume and Position:
- Volume, if you need to increase or decrease the volume of new audio, you can select a volume value to increase or decrease the volume by a percentage.
- Position, by default, the added audio will start at the same time as the original video, if you want to delay it, you can set the position value, for example, a position at 10th second means that new audio will start at 10th second.
- If file upload process takes a very long time or no response or very slow, please try to cancel then submit again.
- This tool cannot support encrypted or protected video files.
Select other video tools according to your needs:
- Compress Video
Reduce video file size
- Merge Video
Video joiner to combine multiple video files
- Resize Video
Video resizer to scale video size
- Cut Video
Video cutter to split video files
- Rotate Video
Flip and transpose video
- Watermark Video
Add a watermark to video
- Repair MP4
Fix corrupted MP4, MOV, M4V, 3GP videos
- Change Video Speed
Speed up or slow down video
- Brighten Video
Brighten and lighten a video
- Stabilize Video
Stabilize and deshake a shaky video
- Sync Audio and Video
Synchronize audio and video
- Add Transition to Video
Add transition effect to video
- Add Background to Video
Add a blur effect, image, color background to video
- Add Image to Video
Add a image to video