将opencv图像和其他数据发送到Flask服务器

def sendtoserver(frame):
    imencoded = cv2.imencode(".jpg", frame)[1]
    headers = {"Content-type": "text/plain"}
    try:
        conn.request("POST", "/", imencoded.tostring(), headers)
        response = conn.getresponse()
    except conn.timeout as e:
        print("timeout")


    return response

但是我想发送一个唯一的\u id和一个框架,我尝试使用JSON将框架和id结合起来,但是出现了以下错误 TypeError: Object of type 'bytes' is not JSON serializable 有人知道我怎样才能把额外的数据和帧一起发送到服务器上吗。

json格式代码

def sendtoserver(frame):
    imencoded = cv2.imencode(".jpg", frame)[1]
    data = {"uid" : "23", "frame" : imencoded.tostring()}
    headers = {"Content-type": "application/json"}
    try:
        conn.request("POST", "/", json.dumps(data), headers)
        response = conn.getresponse()
    except conn.timeout as e:
        print("timeout")


    return response