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| from PIL import Image | |
| import torch | |
| import gradio as gr | |
| import numpy as np | |
| from encoded_video import EncodedVideo, write_video | |
| from io import BytesIO | |
| model2 = torch.hub.load( | |
| "AK391/animegan2-pytorch:main", | |
| "generator", | |
| pretrained=True, | |
| device="cuda", | |
| progress=True, | |
| force_reload=True, | |
| ) | |
| face2paint = torch.hub.load( | |
| 'AK391/animegan2-pytorch:main', 'face2paint', | |
| size=512, device="cuda",side_by_side=False | |
| ) | |
| def uniform_temporal_subsample( | |
| x: torch.Tensor, num_samples: int, temporal_dim: int = -3 | |
| ) -> torch.Tensor: | |
| """ | |
| Uniformly subsamples num_samples indices from the temporal dimension of the video. | |
| When num_samples is larger than the size of temporal dimension of the video, it | |
| will sample frames based on nearest neighbor interpolation. | |
| Args: | |
| x (torch.Tensor): A video tensor with dimension larger than one with torch | |
| tensor type includes int, long, float, complex, etc. | |
| num_samples (int): The number of equispaced samples to be selected | |
| temporal_dim (int): dimension of temporal to perform temporal subsample. | |
| Returns: | |
| An x-like Tensor with subsampled temporal dimension. | |
| """ | |
| t = x.shape[temporal_dim] | |
| assert num_samples > 0 and t > 0 | |
| # Sample by nearest neighbor interpolation if num_samples > t. | |
| indices = torch.linspace(0, t - 1, num_samples) | |
| indices = torch.clamp(indices, 0, t - 1).long() | |
| return torch.index_select(x, temporal_dim, indices) | |
| def inference_video(video_file): | |
| out_fps = 12 | |
| start_sec = 0 | |
| duration = 2 | |
| vid = EncodedVideo.from_path(video_file) | |
| clip = vid.get_clip(start_sec, start_sec + duration) | |
| video_arr = clip['video'] | |
| audio_arr = np.expand_dims(clip['audio'], 0) | |
| audio_fps = None if not vid._has_audio else vid._container.streams.audio[0].sample_rate | |
| frames = uniform_temporal_subsample(torch.from_numpy(video_arr), duration * out_fps, 0).to(torch.uint8).numpy() | |
| out_frames = [] | |
| for frame in frames: | |
| im = Image.fromarray(frame) | |
| out = face2paint(model2, im) | |
| out_frames.append(np.array(out)) | |
| out_frames = np.array(out_frames) | |
| bytes_mp4 = bytes() | |
| out_file = BytesIO(bytes_mp4) | |
| # Add dummy file name to stream, as write_video will be looking for it | |
| out_file.name = "out.mp4" | |
| write_video( | |
| 'out.mp4', | |
| out_frames, | |
| fps=out_fps, | |
| audio_array=audio_arr, | |
| audio_fps=audio_fps, | |
| audio_codec='aac' | |
| ) | |
| return 'out.mp4' | |
| gr.Interface( | |
| inference_video, | |
| inputs=gr.inputs.Video(), | |
| outputs=gr.outputs.Video(), | |
| title='AnimeGANV2 On Videos', | |
| description="Applying AnimeGAN-V2 to frame from video clips", | |
| article = "<p style='text-align: center'><a href='https://github.com/bryandlee/animegan2-pytorch' target='_blank'>Github Repo Pytorch</a></p><p style='text-align: center'>samples from repo: <img src='https://user-images.githubusercontent.com/26464535/129888683-98bb6283-7bb8-4d1a-a04a-e795f5858dcf.gif' alt='animation'/> <img src='https://user-images.githubusercontent.com/26464535/137619176-59620b59-4e20-4d98-9559-a424f86b7f24.jpg' alt='animation'/><img src='https://user-images.githubusercontent.com/26464535/127134790-93595da2-4f8b-4aca-a9d7-98699c5e6914.jpg' alt='animation'/></p>", | |
| enable_queue=True, | |
| # examples=examples, | |
| allow_flagging=False | |
| ).launch(debug=True) |