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import logging
from datetime import datetime
from pathlib import Path
import gradio as gr
import torch
import torchaudio
from mmaudio.eval_utils import (ModelConfig, all_model_cfg, generate, load_video, make_video,
setup_eval_logging)
from mmaudio.model.flow_matching import FlowMatching
from mmaudio.model.networks import MMAudio, get_my_mmaudio
from mmaudio.model.sequence_config import SequenceConfig
from mmaudio.model.utils.features_utils import FeaturesUtils
torch.backends.cuda.matmul.allow_tf32 = True
torch.backends.cudnn.allow_tf32 = True
log = logging.getLogger()
device = 'cuda'
dtype = torch.bfloat16
model: ModelConfig = all_model_cfg['large_44k_v2']
model.download_if_needed()
output_dir = Path('./output/gradio')
setup_eval_logging()
def get_model() -> tuple[MMAudio, FeaturesUtils, SequenceConfig]:
seq_cfg = model.seq_cfg
net: MMAudio = get_my_mmaudio(model.model_name).to(device, dtype).eval()
net.load_weights(torch.load(model.model_path, map_location=device, weights_only=True))
log.info(f'Loaded weights from {model.model_path}')
feature_utils = FeaturesUtils(tod_vae_ckpt=model.vae_path,
synchformer_ckpt=model.synchformer_ckpt,
enable_conditions=True,
mode=model.mode,
bigvgan_vocoder_ckpt=model.bigvgan_16k_path)
feature_utils = feature_utils.to(device, dtype).eval()
return net, feature_utils, seq_cfg
net, feature_utils, seq_cfg = get_model()
@torch.inference_mode()
def video_to_audio(video: gr.Video, prompt: str, negative_prompt: str, seed: int, num_steps: int,
cfg_strength: float, duration: float):
rng = torch.Generator(device=device)
rng.manual_seed(seed)
fm = FlowMatching(min_sigma=0, inference_mode='euler', num_steps=num_steps)
clip_frames, sync_frames, duration = load_video(video, duration)
clip_frames = clip_frames.unsqueeze(0)
sync_frames = sync_frames.unsqueeze(0)
seq_cfg.duration = duration
net.update_seq_lengths(seq_cfg.latent_seq_len, seq_cfg.clip_seq_len, seq_cfg.sync_seq_len)
audios = generate(clip_frames,
sync_frames, [prompt],
negative_text=[negative_prompt],
feature_utils=feature_utils,
net=net,
fm=fm,
rng=rng,
cfg_strength=cfg_strength)
audio = audios.float().cpu()[0]
current_time_string = datetime.now().strftime('%Y%m%d_%H%M%S')
output_dir.mkdir(exist_ok=True, parents=True)
video_save_path = output_dir / f'{current_time_string}.mp4'
make_video(video,
video_save_path,
audio,
sampling_rate=seq_cfg.sampling_rate,
duration_sec=seq_cfg.duration)
return video_save_path
@torch.inference_mode()
def text_to_audio(prompt: str, negative_prompt: str, seed: int, num_steps: int, cfg_strength: float,
duration: float):
rng = torch.Generator(device=device)
rng.manual_seed(seed)
fm = FlowMatching(min_sigma=0, inference_mode='euler', num_steps=num_steps)
clip_frames = sync_frames = None
seq_cfg.duration = duration
net.update_seq_lengths(seq_cfg.latent_seq_len, seq_cfg.clip_seq_len, seq_cfg.sync_seq_len)
audios = generate(clip_frames,
sync_frames, [prompt],
negative_text=[negative_prompt],
feature_utils=feature_utils,
net=net,
fm=fm,
rng=rng,
cfg_strength=cfg_strength)
audio = audios.float().cpu()[0]
current_time_string = datetime.now().strftime('%Y%m%d_%H%M%S')
output_dir.mkdir(exist_ok=True, parents=True)
audio_save_path = output_dir / f'{current_time_string}.flac'
torchaudio.save(audio_save_path, audio, seq_cfg.sampling_rate)
return audio_save_path
video_to_audio_tab = gr.Interface(
fn=video_to_audio,
inputs=[
gr.Video(),
gr.Text(label='Prompt'),
gr.Text(label='Negative prompt', value='music'),
gr.Number(label='Seed', value=0, precision=0, minimum=0),
gr.Number(label='Num steps', value=25, precision=0, minimum=1),
gr.Number(label='Guidance Strength', value=4.5, minimum=1),
gr.Number(label='Duration (sec)', value=8, minimum=1),
],
outputs='playable_video',
cache_examples=False,
title='MMAudio — Video-to-Audio Synthesis',
)
text_to_audio_tab = gr.Interface(
fn=text_to_audio,
inputs=[
gr.Text(label='Prompt'),
gr.Text(label='Negative prompt'),
gr.Number(label='Seed', value=0, precision=0, minimum=0),
gr.Number(label='Num steps', value=25, precision=0, minimum=1),
gr.Number(label='Guidance Strength', value=4.5, minimum=1),
gr.Number(label='Duration (sec)', value=8, minimum=1),
],
outputs='audio',
cache_examples=False,
title='MMAudio — Text-to-Audio Synthesis',
)
if __name__ == "__main__":
gr.TabbedInterface([video_to_audio_tab, text_to_audio_tab],
['Video-to-Audio', 'Text-to-Audio']).launch(server_port=17888,
allowed_paths=[output_dir])
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