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| import os | |
| import subprocess | |
| import requests | |
| import gradio as gr | |
| from moviepy.editor import * | |
| from datetime import datetime | |
| import logging | |
| import re | |
| import torch | |
| from transformers import GPT2LMHeadModel, GPT2Tokenizer | |
| # Configuración básica | |
| logging.basicConfig(level=logging.INFO) | |
| logger = logging.getLogger(__name__) | |
| # Configuración de entorno (usa tu propia API key de Pexels) | |
| PEXELS_API_KEY = os.getenv("PEXELS_API_KEY") or "TU_API_KEY_AQUI" | |
| # Voces disponibles (Edge-TTS) | |
| VOICES = ["es-MX-DaliaNeural", "es-ES-ElviraNeural", "en-US-JennyNeural"] | |
| # Carga el modelo GPT-2 en español (ligero y rápido) | |
| tokenizer = GPT2Tokenizer.from_pretrained("datificate/gpt2-small-spanish") | |
| model = GPT2LMHeadModel.from_pretrained("datificate/gpt2-small-spanish") | |
| def generar_texto(tema): | |
| """Genera un texto largo y natural sobre el tema (sin estructuras forzadas).""" | |
| try: | |
| prompt = f"Habla extensamente sobre {tema} en un tono natural y detallado:" | |
| inputs = tokenizer(prompt, return_tensors="pt", truncation=True, max_length=512) | |
| outputs = model.generate( | |
| inputs.input_ids, | |
| max_length=800, | |
| do_sample=True, | |
| temperature=0.7, | |
| top_k=50, | |
| pad_token_id=tokenizer.eos_token_id | |
| ) | |
| texto = tokenizer.decode(outputs[0], skip_special_tokens=True) | |
| return re.sub(r'\s+', ' ', texto).strip() | |
| except Exception as e: | |
| logger.error(f"Error generando texto: {e}") | |
| return f"Contenido generado sobre {tema}." | |
| def buscar_videos(tema): | |
| """Busca videos en Pexels y devuelve los 3 más relevantes.""" | |
| try: | |
| headers = {"Authorization": PEXELS_API_KEY} | |
| response = requests.get( | |
| f"https://api.pexels.com/videos/search?query={tema}&per_page=3", | |
| headers=headers, | |
| timeout=10 | |
| ) | |
| return response.json().get("videos", [])[:3] | |
| except Exception as e: | |
| logger.error(f"Error buscando videos: {e}") | |
| return [] | |
| def crear_video(tema, voz_seleccionada): | |
| """Genera el video final con voz y clips de video.""" | |
| try: | |
| # 1. Generar texto | |
| texto = generar_texto(tema) | |
| # 2. Convertir texto a voz (Edge-TTS) | |
| voz_archivo = "narracion.mp3" | |
| subprocess.run([ | |
| 'edge-tts', | |
| '--voice', voz_seleccionada, | |
| '--text', texto, | |
| '--write-media', voz_archivo | |
| ], check=True) | |
| # 3. Procesar audio | |
| audio = AudioFileClip(voz_archivo) | |
| duracion_total = audio.duration | |
| # 4. Buscar y descargar videos | |
| videos = buscar_videos(tema) or buscar_videos("nature") | |
| clips = [] | |
| for i, video in enumerate(videos[:3]): # Máximo 3 videos | |
| try: | |
| mejor_calidad = max(video['video_files'], key=lambda x: x.get('width', 0)) | |
| url_video = mejor_calidad['link'] | |
| # Descargar video temporal | |
| temp_file = f"temp_video_{i}.mp4" | |
| with requests.get(url_video, stream=True) as r: | |
| r.raise_for_status() | |
| with open(temp_file, 'wb') as f: | |
| for chunk in r.iter_content(chunk_size=8192): | |
| f.write(chunk) | |
| # Ajustar duración del clip | |
| clip = VideoFileClip(temp_file) | |
| duracion_clip = min(duracion_total / len(videos), clip.duration) | |
| clips.append(clip.subclip(0, duracion_clip)) | |
| except Exception as e: | |
| logger.error(f"Error procesando video {i}: {e}") | |
| # 5. Combinar clips (o usar fondo negro si no hay videos) | |
| if not clips: | |
| video_final = ColorClip((1280, 720), (0, 0, 0), duration=duracion_total) | |
| else: | |
| video_final = concatenate_videoclips(clips, method="compose") | |
| video_final = video_final.set_audio(audio) | |
| # 6. Exportar video | |
| nombre_archivo = f"video_final_{datetime.now().strftime('%Y%m%d_%H%M%S')}.mp4" | |
| video_final.write_videofile( | |
| nombre_archivo, | |
| fps=24, | |
| codec="libx264", | |
| audio_codec="aac", | |
| threads=2, | |
| preset='fast' | |
| ) | |
| return nombre_archivo | |
| except Exception as e: | |
| logger.error(f"Error crítico: {e}") | |
| return None | |
| finally: | |
| # Limpieza de archivos temporales | |
| if os.path.exists(voz_archivo): | |
| os.remove(voz_archivo) | |
| for i in range(3): | |
| temp_file = f"temp_video_{i}.mp4" | |
| if os.path.exists(temp_file): | |
| os.remove(temp_file) | |
| # Interfaz de Gradio (sencilla y funcional) | |
| with gr.Blocks() as app: | |
| gr.Markdown("# 🎬 Generador Automático de Videos") | |
| with gr.Row(): | |
| tema = gr.Textbox(label="Tema del video", placeholder="Ej: 'Historia de la inteligencia artificial'") | |
| voz = gr.Dropdown(label="Voz", choices=VOICES, value=VOICES[0]) | |
| btn = gr.Button("Generar Video", variant="primary") | |
| salida = gr.Video(label="Resultado") | |
| btn.click( | |
| fn=crear_video, | |
| inputs=[tema, voz], | |
| outputs=salida | |
| ) | |
| if __name__ == "__main__": | |
| app.launch(server_name="0.0.0.0", server_port=7860) |