小编Swa*_*raj的帖子

我正在尝试呈现显示来自网络摄像头的视频捕获的 html 页面。但面临错误：- 500 Server Error TypeError: TemplateResponse() missing 1 required positional argument: 'context'。我在 Flask 中尝试过的相同代码，在那里工作正常。

from fastapi import FastAPI
import uvicorn
from fastapi import Depends, FastAPI
from fastapi import FastAPI, Request
from fastapi.responses import HTMLResponse
from fastapi.templating import Jinja2Templates
import cv2

app = FastAPI(debug=True)
templates = Jinja2Templates(directory="templates")

@app.get("/")
async def index():
    return templates.TemplateResponse("index.html")


async def gen_frames(camera_id):
    cap=  cv2.VideoCapture(0)

    while True:
        # for cap in caps:
        # # Capture frame-by-frame
        success, frame = cap.read()  # read the camera frame …