What is SeedFoley
SeedFoley is an end-to-end video sound effect generation model developed by the ByteDance Doubao large model speech team, providing intelligent sound effect generation services for video creation. By integrating spatiotemporal video features with a diffusion generative model, it achieves a high degree of synchronization between sound effects and video. The model employs a video encoder with a combination of fast and slow features to extract spatiotemporal features from the video, and an audio representation model based on raw waveforms as input, preserving high-frequency information and enhancing the fineness of sound effects. The diffusion model reduces the number of inference steps and lowers inference costs by optimizing the continuous mapping relationships along the probability path. SeedFoley can accurately extract frame-level visual information from videos, intelligently distinguish between action sound effects and ambient sound effects, support various video lengths, and perform excellently in sound effect accuracy, synchronization, and matching.
Main Features of SeedFoley
- Intelligent Sound Effect Generation: SeedFoley can precisely extract frame-level visual information from videos, accurately identify the sound-producing subjects and action scenes in videos by analyzing multi-frame image information, such as rhythmically strong musical moments or tense scenes in movies, and precisely sync to create an immersive and realistic experience.
- Distinguish Sound Effect Types: SeedFoley can intelligently distinguish between action sound effects and ambient sound effects, significantly enhancing the narrative tension and emotional delivery efficiency of videos.
- Support Multiple Video Lengths: SeedFoley can support variable-length video inputs and has achieved leading levels in indicators such as sound effect accuracy, sound effect synchronization, and sound effect matching.
Technical Principles of SeedFoley
- Video Encoder: SeedFoley's video encoder adopts a combination of fast and slow features, extracting local motion information between frames at high frame rates and semantic information from the video at low frame rates. In this way, the model can achieve frame-level video feature extraction at 8fps under low computational resources, enabling fine action localization. Finally, based on the Transformer structure, it fuses fast and slow features to achieve spatiotemporal feature extraction from the video.
- Audio Representation Model: Unlike traditional VAE models based on Mel spectrograms, SeedFoley uses raw waveforms as input, which are encoded to obtain 1D representations. The audio uses a 32k sampling rate to ensure the preservation of high-frequency information. Each second of audio is extracted into 32 audio latent representations, effectively improving the temporal resolution of the audio and enhancing the fineness of the sound effects.
- Diffusion Model: SeedFoley adopts the Diffusion Transformer framework, achieving probability matching from the Gaussian noise distribution to the target audio representation space by optimizing the continuous mapping relationships along the probability path. Compared to traditional diffusion models that rely on Markov chain sampling, SeedFoley effectively reduces the number of inference steps and lowers inference costs by constructing continuous transformation paths. During the training phase, video features and audio semantic labels are separately encoded into latent space vectors, and the two are mixed with time encoding and noise signals through channel dimension concatenation to form a joint conditional input. This improves the temporal consistency between sound effects and video frames.
How to Use SeedFoley
- Visit the Jimeng Platform: VisitJimeng's official website or use the Jimeng App, register, and log in.
- Generate Video: Select the video generation feature on Jimeng and generate video content according to your needs.
- Select the "AI Sound Effects" feature: After generating the video, select the "AI Sound Effects" feature. The system will automatically generate 3 professional-grade sound effect options for your video.
- Preview and Select Sound Effect Options: Preview the generated sound effect options and select the one that best suits your video content.
- Apply Sound Effects: Apply the selected sound effect option to your video.
- Notes：
- Video Length: SeedFoley supports video input of variable lengths, but it is recommended that the video not be too long to ensure generation quality.
- Sound Effect Types: SeedFoley can intelligently distinguish between action sound effects and ambient sound effects, enhancing the narrative tension and emotional delivery efficiency of the video.
- Preview Results: When selecting a sound effect option, it is recommended to carefully preview the effect of each option and choose the sound effect that best suits your video content.
Application Scenarios of SeedFoley
- Lifestyle Vlogs: Add realistic ambient sound effects to personal vlogs, such as street noise, background music in cafés, etc.
- Short Film Production: Add action sound effects and ambient sound effects that match the plot to short films, enhancing the audience's sense of immersion.
- Game Production: Add realistic sound effects to game videos, such as combat sound effects, ambient sound effects, etc., improving the gaming experience.
- Video Post-Production: In video post-production, SeedFoley can quickly generate sound effects that highly match the video content, saving time and cost in post-production.
- Advertising Videos: Add attractive sound effects to advertising videos, enhancing the appeal and传播效果 of the advertisement.
- Educational Videos: Add appropriate sound effects to educational videos, enhancing the audience's learning interest and attention.