Sync Audio and Video

Select a video to upload and synchronize:
(max file size 200 MB)
(confirm you agree to terms)
This tool can help you to synchronize audio and video, fix audio synchronization problem in a video file. There are three options, "Delay Audio", "Delay Video" or "Stretch Audio". Using the "Delay Audio" option, the sound at the beginning of the video will be delayed for a period of time. Using the "Delay Video" option, the video will be delayed for a period of time, that is, the sound will be played in advance. Using the "Stretch Audio" option, the tool will try to remove the silence at the beginning and end of the video file, and then stretch the audio to match the length of the video. The "Time" option value can be floating point value in seconds, such as 0.5, 1.6, etc., which can control the time more precisely.
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. Choose a sync option.
  3. Enter the time value (seconds).
  4. Click button "Synchronize" to start upload your files.
  5. Once upload completed, converter will redirect a web page to show the converted result.
  • 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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