The team at Tian Tu Wan Jing has released a versatile video and audio tool named Sora Opera, which not only dubs AI-generated videos but also allows for re-dubbing of existing videos. Users can add background music and sound effects to their generated videos, effectively turning off the "mute mode." Sora Opera plans to offer text-to-sound effect and video soundtrack generation features, but these require a membership purchase for full access. The founder demonstrated several demo videos of Sora Opera, capable of dubbing videos up to 60 minutes long. The tool also boasts a variety of unique features, offering more possibilities for video production and potentially impacting traditional PPT presentations.