To start talking about great variety of technologies, we should start with defining what is film dubbing.
Film dubbing is the process of replacing the original speech of the characters in the film with another language while maintaining audio synchronization with the original lips and emotions. During the dubbing process, professional actors record a voice track in the target language, trying to convey the emotions and intonations of the original characters.
Dubbing is used to adapt a film into another language in order to make it accessible to an audience that does not speak the original language. It allows viewers to fully immerse themselves in the film, understanding all the dialogue and expressions without paying attention to the original sounds and speech.
Film dubbing requires professional skills of actors (narrators), careful translation of the script, adherence to time limits, recalculation of time marks according to the actual movements of the lips on the screen and an exact match of emotions with the original actors. This is a complex and time-consuming process that involves post-production work to combine speech and audio tracks and get a smooth end result.
Traditional dubbing
This is the process in which professional actors voice the characters in the video in the target language. They watch the original video and lip-synch their voices with the original actors' emotions. This requires the professional skills of the actors and careful post-production work to accurately match the sound.
Artificial Intelligence (AI)
With the development of deep learning technology and neural networks, AI can be used to automatically duplicate videos. In voxqube, we use AI that can analyze the voices and lip movements in the original video and synchronize the voice recordings in the target language. The audio is created by the AI as well: we use neural voices recorded from professional actors. These recordings are united in the dataset - base of linguistic units that AI picks up in creating a new audio track. AI also improves the sound quality and adjusts the voice to convey emotions more accurately.
Voice synthesis
This technology uses computer voices created with voice synthesizers to dub videos. Voice synthesizers can emulate human speech and synchronize with the original video. However, voice synthesis can sound more artificial than the real voice of the actor.
Combined method
Some technologies use a combination of AI and human intervention. The AI can help automatically sync the voice to the video, and then professional actors or announcers can tweak and tweak to improve the quality and accuracy of the dubbing.
Depending on the budget, time and target parameters of video duplication, you can choose the optimal technology. It is also important to take into account the quality of sound and the transmission of emotions by voice when choosing a video duplication method.