前几天我在抖音上刷到一个慢慢变老的视频,播放量居然有 30W+,当时就在想这视频 Python 可不可以做?经过一番搜索,我找到了腾讯云的人脸年龄变化 API,上面介绍说只要用户上传一张人脸图片,基于人脸编辑与生成算法,就可以输出一张人脸变老或变年轻的图片,并支持实现人脸不同年龄的变化。
准备工作
获取 API 秘钥
第一步,在注册账号之后,打开 API 密钥管理页面(https://console.cloud.tencent.com/cam/capi)获取到 SecretId 和 SecretKey。
第二步,安装腾讯云的 SDK
pip3 install tencentcloud-sdk-python
人脸属性
在人脸年龄变化 API 中有一个 AgeInfo 参数,它包含了 Age 和 FaceRect 两个属性,其中 FaceRect 属性必须填人脸在照片中基于左上角的 X、Y 坐标和人脸的高度与宽度。所以先要调用人脸检测与分析 API 得到这些数据。
下面的示例图是在百度图片中截取的。
import json
import base64
from tencentcloud.common import credential
from tencentcloud.common.profile.client_profile import ClientProfile
from tencentcloud.common.profile.http_profile import HttpProfile
from tencentcloud.common.exception.tencent_cloud_sdk_exception import TencentCloudSDKException
from tencentcloud.iai.v20200303 import iai_client
from tencentcloud.iai.v20200303 import models as models03
sid = "xxx"
skey = "xxx"
try:
filepath = '/Users/imeng/Downloads/face/face.png'
file = open(filepath, "rb")
base64_data = base64.b64encode(file.read())
cred = credential.Credential(sid, skey)
httpProfile = HttpProfile()
httpProfile.endpoint = "iai.tencentcloudapi.com"
clientProfile = ClientProfile()
clientProfile.httpProfile = httpProfile
client = iai_client.IaiClient(cred, "ap-beijing", clientProfile)
req = models03.DetectFaceAttributesRequest()
params = {
"MaxFaceNum":2,
"Action":"DetectFace",
"Version":"2018-03-01",
"Image": base64_data.decode()
}
req.from_json_string(json.dumps(params))
resp = client.DetectFaceAttributes(req)
faceDetailInfos = resp.FaceDetailInfos
for faceDetailInfo in faceDetailInfos:
faceRect = faceDetailInfo.FaceRect
print(faceRect)
except TencentCloudSDKException as err:
print(err)
示例结果
{"X": 62, "Y": 13, "Width": 145, "Height": 230}
{"X": 426, "Y": 113, "Width": 115, "Height": 139}
修改年龄
在上面已经得到了各个人脸的 X、Y、Width、Height 属性,加上变老的年龄 Age,就可以请求年龄变化 API 了。
这里需要注意的是 models 模块,人脸检测 models 模块是在 tencentcloud.iai.v20200303 包下,人脸年龄变化的 models 是在 tencentcloud.ft.v20200304 下,两个 models 模块并不兼容。
import json
from tencentcloud.common import credential
from tencentcloud.common.profile.client_profile import ClientProfile
from tencentcloud.common.profile.http_profile import HttpProfile
from tencentcloud.common.exception.tencent_cloud_sdk_exception import TencentCloudSDKException
from tencentcloud.ft.v20200304 import ft_client, models
cred = credential.Credential(sid, skey)
httpProfile = HttpProfile()
httpProfile.endpoint = "ft.tencentcloudapi.com"
clientProfile.httpProfile = httpProfile
client = ft_client.FtClient(cred, "ap-beijing", clientProfile)
req = models.ChangeAgePicRequest()
for age in range(70, 80):
params = {
"Image": base64_data.decode(),
"AgeInfos": [
{
"Age": age,
"FaceRect": {
"Y": faceDetailInfos[0].FaceRect.Y,
"X": faceDetailInfos[0].FaceRect.X,
"Width": faceDetailInfos[0].FaceRect.Width,
"Height": faceDetailInfos[0].FaceRect.Height
}
},
{
"Age": age,
"FaceRect": {
"Y": faceDetailInfos[1].FaceRect.Y,
"X": faceDetailInfos[1].FaceRect.X,
"Width": faceDetailInfos[1].FaceRect.Width,
"Height": faceDetailInfos[1].FaceRect.Height
}
}
],
"RspImgType": "base64"
}
req.from_json_string(json.dumps(params))
resp = client.ChangeAgePic(req)
image_base64 = resp.ResultImage
image_data = base64.b64decode(image_base64)
file_path = '/Users/imeng/Downloads/face/{}.png'.format(age)
with open(file_path, 'wb') as f:
f.write(image_data)
time.sleep(1)
示例结果
最后的视频可以将图片一张一张插入 PPT 幻灯片,点击保存为视频。
总结
用 Python 制作抖音素材,下一个 30W+ 播放量等着你。