Created
February 8, 2026 09:03
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Creare un video da un file MP3 con sincronizzazione labbra basica.
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| import numpy as np | |
| import cv2 | |
| import librosa | |
| from numba import jit | |
| import os | |
| from moviepy import VideoFileClip, AudioFileClip | |
| # --- CONFIGURAZIONE --- | |
| AUDIO_FILE = 'Carmina Burana.mp3' | |
| TEMP_VIDEO = 'temp_silent.mp4' | |
| FINAL_OUTPUT = 'temp_silent.mp4' | |
| WIDTH, HEIGHT = 800, 450 | |
| FPS = 30 | |
| if not os.path.exists(AUDIO_FILE): | |
| print(f"ERRORE: Inserisci il file {AUDIO_FILE} nella stessa cartella dello script!") | |
| exit() | |
| # --- ANALISI AUDIO --- | |
| print("Analizzando l'audio...") | |
| y, sr = librosa.load(AUDIO_FILE, sr=None) | |
| duration = len(y) / sr | |
| total_frames = int(duration * FPS) | |
| hop_length = sr // FPS | |
| # Estrazione volume e frequenze | |
| rms = librosa.feature.rms(y=y, hop_length=hop_length)[0] | |
| rms = rms / (np.max(rms) + 1e-6) | |
| stft = np.abs(librosa.stft(y, n_fft=2048, hop_length=hop_length)) | |
| vocal_energy = np.mean(stft[10:50, :], axis=0) # Bande basse/medie | |
| vocal_energy = vocal_energy / (np.max(vocal_energy) + 1e-6) | |
| # --- GENERAZIONE VIDEO --- | |
| out = cv2.VideoWriter(TEMP_VIDEO, cv2.VideoWriter_fourcc(*'mp4v'), FPS, (WIDTH, HEIGHT)) | |
| print(f"Rendering di {total_frames} frame...") | |
| for i in range(total_frames): | |
| frame = np.zeros((HEIGHT, WIDTH, 3), dtype=np.uint8) | |
| vol = rms[i] if i < len(rms) else 0 | |
| voc = vocal_energy[i] if i < len(vocal_energy) else 0 | |
| # Labbra stilizzate (due ellissi che si aprono) | |
| center = (WIDTH // 2, HEIGHT // 2) | |
| apertura = int(50 * voc + 10) | |
| larghezza = int(150 + 20 * vol) | |
| # Disegna labbra rosse | |
| color = (50, 50, 200 + int(55 * voc)) # BGR | |
| cv2.ellipse(frame, center, (larghezza, apertura), 0, 0, 360, color, 3) | |
| cv2.line(frame, (center[0]-larghezza, center[1]), (center[0]+larghezza, center[1]), color, 1) | |
| # Effetto particelle psichedeliche | |
| for _ in range(int(vol * 20)): | |
| rand_x = np.random.randint(0, WIDTH) | |
| rand_y = np.random.randint(0, HEIGHT) | |
| cv2.circle(frame, (rand_x, rand_y), int(5 * vol), (255, 100, 100), -1) | |
| out.write(frame) | |
| out.release() | |
| # --- UNIONE AUDIO/VIDEO --- | |
| print("Montaggio finale...") | |
| video = VideoFileClip(TEMP_VIDEO) | |
| audio = AudioFileClip(AUDIO_FILE) | |
| video.with_audio(audio).write_videofile(FINAL_OUTPUT, codec="libx264") | |
| # Pulizia | |
| video.close() | |
| audio.close() | |
| os.remove(TEMP_VIDEO) | |
| print(f"FATTO! Video creato: {FINAL_OUTPUT}") |
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