VideoLocalize’s Award-Winning Technology

Solving a problem in the video localization process

Have you ever wanted to localize your video into another language and found out that the length of some segments of the multilingual voiceover does not match the original? That means the video will have voiceover audio that does not match what is being shown. To fix this synchronization issue, you can either edit the video and audio segment by segment or ask the voice talent to match the length of the video when recording. Neither approach is ideal because it requires a substantial amount of manual effort.

The synchronization feature (patent pending) in our Video Translation Management System platform (VTMS) can automatically edit the voiceover and video so that they match, and no manual work is required. There are two usual methods implemented to match the audio and video.

Method 1: Speed up the voiceover to match the video length

Compare these two videos to see and hear the difference.

Original video with original audio

Original video after speeding up voiceover recording

The voice can be sped up without changing the pitch and sounding unnatural.  However, there is a limitation to this method: speeding up the voiceover too fast will make it sound unnatural.

Method 2: Slow down the video a little bit to match the voiceover length.

This video has been slowed down to match the voiceover; otherwise, the person's mouth will be still while the audio is still heard.  Slowing the video to match the voiceover length usually improves synchronization. If the recorded voiceover is too short, slowing down the video too much will make the action in the video appear like slow-motion.

Our Hybrid Solution
To overcome the limitations of these two methods, our technology (patent pending) will speed up the voiceover recording while slowing down the video at just the right moment, based on our own in-house developed algorithm. So now, you can sync the video and voiceover automatically without the human effort of voice talents or engineers. This innovative technology, winner of the 2017 prestigious TAUS Innovation Award, can save hours of work for every video localization project, ultimately saving a lot of money as well.