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Add Audio to Video

Select files to upload and add:
Video File
Audio File
(max total file size 200 MB)
Options:
Audio Volume:
Audio Loop:
Position:
(from the start of video)
(to the end of video)
(confirm you agree to terms)
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.
Options:
  • Replace Audio in Video, old audio from the video will be removed.
  • Keep Audio in Video, add new audio to the video as background music.
How To Use:
  1. Select a video file (such as *.mp4, *.mkv, *.avi, *.wmv, *.flv, *.mov, *.vob, *.3gp, *.rmvb, *.mts, *.m2ts, *.rm, *.divx, *.asf, *.webm and more).
  2. Select an audio file (such as *.mp3, *.ogg, *.midi, *.mid, *.m4a, *.wma, *.amr, *.flac, *.aiff, *.wav and more).
  3. Click button "Add" to start upload your files.
  4. Once upload completed, converter will redirect a web page to show the mixed result.
Volume and Position Options:
  • Audio 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 or just want to insert it in some specified range, you can set the position value, for example, a position at 10th second means that new audio will start at 10th second. Start position options include "From the Start", "Start Seconds" and "Start Time" (hours:minutes:seconds), and end position options include "To the End", "End Seconds", "End Time" (hours:minutes:seconds) and "Duration Seconds".
Audio Loop Options:
  • Loop, if your audio is shorter than the video, the audio will repeat until the video ends.
  • No Loop, i.e. 1 time, the audio will play once without repeating.
  • 2, 3, 4, 5, 6, 7, 8, 9, 10, the audio will play and repeat the specified number of times until the video ends.
Remark:
  • 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.
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