智能媒体服务这个数据格式有什么问题吗？ 设置视频背景图不生效

智能媒体服务这个数据格式有什么问题吗？ 设置视频背景图不生效{
"Version": 1,
"SdkVersion": "4.13.1",
"AudioTracks": [],
"AspectRatio": "9:16",
"From": "websdk",
"FECanvas": {
"Width": 243,
"Height": 432
},
"FEConfig": {
"AutoProportion": "1280:720"
},
"VideoTracks": [
{
"Type": "Video",
"Visible": true,
"Disabled": false,
"Count": 1,
"VideoTrackClips": [
{
"MediaURL": "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/background_v.jpg",
"Type": "GlobalImage",
"Id": 11070
},
{
"MediaURL": "https://washoukd.oss-cn-shanghai.aliyuncs.com/mCMJacinPw.mp4",
"Type": "Video",
"TimelineIn": 0,
"TimelineOut": 2,
"Duration": 10,
"Width": 1,
"Height": 1,
"x": 0,
"y": 200,
"Id": 79983,
"Effects": [
{
"Type": "Volume",
"Gain": "0"
}
],
"AdaptMode": "Contain",
"X": 0,
"Y": 0,
"MediaId": "mockMediaId:19331"
},
{
"MediaURL": "https://washoukd.oss-cn-shanghai.aliyuncs.com/4NX7R86Nm3.mp4",
"Type": "Video",
"TimelineIn": 2,
"TimelineOut": 4,
"Duration": 10,
"Width": 1,
"Height": 1,
"x": 0,
"y": 200,
"Id": 46143,
"Effects": [
{
"Type": "Volume",
"Gain": "0"
}
],
"AdaptMode": "Contain",
"X": 0,
"Y": 0,
"MediaId": "mockMediaId:19332"
},
{
"MediaURL": "https://washoukd.oss-cn-shanghai.aliyuncs.com/EJKrb5JPYf.mp4",
"Type": "Video",
"TimelineIn": 4,
"TimelineOut": 6,
"Duration": 10,
"Width": 1,
"Height": 1,
"x": 0,
"y": 200,
"Id": 79365,
"Effects": [
{
"Type": "Volume",
"Gain": "0"
}
],
"AdaptMode": "Contain",
"X": 0,