app.py

import gradio as gr
import cv2

def process_video(video):
    # 打开视频文件
    cap = cv2.VideoCapture(video)
    # 创建一个 VideoWriter 对象以保存处理后的视频
    fourcc = cv2.VideoWriter_fourcc(*'mp4v')
    out = cv2.VideoWriter('output.mp4', fourcc, 20.0, (int(cap.get(3)), int(cap.get(4))))

    while cap.isOpened():
        ret, frame = cap.read()
        if not ret:
            break
        # 处理帧，例如将其转换为灰度
        gray_frame = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
        # 将处理后的帧写入输出视频
        out.write(cv2.cvtColor(gray_frame, cv2.COLOR_GRAY2BGR))
    
    cap.release()
    out.release()
    return 'output.mp4'

demo = gr.Interface(fn=process_video, inputs="video", outputs="video")
demo.launch()