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Allegro

Text-to-Video
Diffusers
Safetensors
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metadata
license: apache-2.0
language:
  - en
library_name: diffusers

Gallery 路 GitHub 路 Blog 路 Paper 路 Discord

Gallery

For more demos and corresponding prompts, see the Allegro Gallery.

Key Feature

  • Open Source: Full model weights and code available to the community, Apache 2.0!
  • Versatile Content Creation: Capable of generating a wide range of content, from close-ups of humans and animals to diverse dynamic scenes.
  • High-Quality Output: Generate detailed 6-second videos at 15 FPS with 720x1280 resolution, can be interpolated to 30 FPS with EMA-VFI.
  • Small and Efficient: Features a 175M parameter VideoVAE and a 2.8B parameter VideoDiT model. Supports multiple precisions (FP32, BF16, FP16) and uses 9.3 GB of GPU memory in BF16 mode with CPU offloading. Context length is 79.2k, equivalent to 88 frames.

Model info

Model Allegro
Description Text-to-Video Generation Model
Download <HF link - TBD>
Parameter VAE: 175M
DiT: 2.8B
Inference Precision VAE: FP32/TF32/BF16/FP16 (best in FP32/TF32)
DiT/T5: BF16/FP32/TF32
Context Length 79.2k
Resolution 720 x 1280
Frames 88
Video Length 6 seconds @ 15 fps
Single GPU Memory Usage 9.3G BF16 (with cpu_offload)

Quick start

You can quickly get started with Allegro using the Hugging Face Diffusers library. For more tutorials, see Allegro GitHub (link-tbd).

  1. Install necessary requirements. Please refer to requirements.txt on Allegro GitHub.
  2. Perform inference on a single GPU.
from diffusers import DiffusionPipeline
import torch

allegro_pipeline = DiffusionPipeline.from_pretrained(
"rhymes-ai/Allegro", trust_remote_code=True, torch_dtype=torch.bfloat16
).to("cuda")

allegro_pipeline.vae = allegro_pipeline.vae.to(torch.float32)

prompt = "a video of an astronaut riding a horse on mars"

positive_prompt = """
(masterpiece), (best quality), (ultra-detailed), (unwatermarked), 
{} 
emotional, harmonious, vignette, 4k epic detailed, shot on kodak, 35mm photo, 
sharp focus, high budget, cinemascope, moody, epic, gorgeous
"""

negative_prompt = """
nsfw, lowres, bad anatomy, bad hands, text, error, missing fingers, extra digit, fewer digits, cropped, worst quality, 
low quality, normal quality, jpeg artifacts, signature, watermark, username, blurry.
"""

num_sampling_steps, guidance_scale, seed = 100, 7.5, 42

user_prompt = positive_prompt.format(args.user_prompt.lower().strip())
out_video = allegro_pipeline(
    user_prompt, 
    negative_prompt=negative_prompt, 
    num_frames=88,
    height=720,
    width=1280,
    num_inference_steps=num_sampling_steps,
    guidance_scale=guidance_scale,
    max_sequence_length=512,
    generator = torch.Generator(device="cuda:0").manual_seed(seed)
).video[0]

imageio.mimwrite("test_video.mp4", out_video, fps=15, quality=8)

Tip:

  • It is highly recommended to use a video frame interpolation model (such as EMA-VFI) to enhance the result to 30 FPS.
  • For more tutorials, see Allegro GitHub.

License

This repo is released under the Apache 2.0 License.