Example 3: Obtaining Media File Details

Scenario

You can call the VOD API to query the basic information and information about transcoding file generation, snapshots, and review of one or more media files.

This section describes how to call APIs to obtain details about media files stored in VOD.

Prerequisites

The region where the media file to be queried is located has been specified. See Endpoints.
You have obtained the project ID of the region where the media file to be queried is located. For details, see Obtaining a Project ID.

Procedure

Obtain a user token and use it to authenticate the calling of VOD APIs.

For details, see Making an API Request. CN North-Beijing4 is used as an example. If you need to call a VOD API in another region, replace the endpoint with the IAM endpoint of the corresponding region.

POST https://iam.cn-north-4.myhuaweicloud.com/v3/auth/tokens
Content-Type: application/json

{
  "auth": {
    "identity": {
      "methods": [
        "password"
      ],
      "password": {
        "user": {
          "name": "username", 
          "password": "password", 
          "domain": {
            "name": "domainname"   
          }
        }
      }
    },
    "scope": {
      "project": {
         "name": "projectname"
      }
    }
  }
}

As shown in Figure 1, information in the red box indicates the user token.

Figure 1 Obtaining the user token

Call the API for querying media file details to query media file details.

Select the GET request method and enter the request URI.
```
https://{endpoint}/v1.0/{project_id}/asset/details?asset_id=41cff636d5b12a51e7eb2838bbf45201&categories=base_info,transcode_info&thumbnail_info,review_info
```
categories indicates the type of media file information to be queried. You can select one or more types for query. The options are as follows:
- base_info: basic information about the media file, including the media file type, title, category, description, and original file URL
- transcode_info: information about the transcoded media file, including the used transcoding template
- thumbnail_info: information about snapshots, including the snapshot status and snapshot storage URL
- review_info: information about review, including whether the review is passed and the review results of text, cover, and video
You can query information about transcoded files, snapshots, or review only when the transcoding, snapshot capturing, or review is successful.
In the request header, add X-Auth-Token and set its value to the token obtained in 1.

If the request is successful, the media file details are returned.

{
  "asset_info_array" : [ {
    "asset_id" : "652c1e4085afeb22fdc256c6757d751b",
    "status" : "PUBLISHED",
    "description" : "Asset meta is published",
    "base_info" : {
      "title" : "okFLV.flv",
      "video_name" : "okFLV.flv",
      "description" : null,
      "category_id" : -1,
      "category_name": "Other",
      "create_time" : "20190704144303",
      "last_modified" : "20190704144303",
      "video_type" : "FLV",
      "tags" : null,
      "meta_data" : {
        "pack_type" : null,
        "codec" : "H.264",
        "duration" : 244,
        "video_size" : 13682041,
        "width" : 512,
        "hight" : 288,
        "bit_rate" : 448,
        "frame_rate" : 30,
        "quality" : null
      },
      "video_url" : "https://651.cdn-vod.huaweicloud.com/asset/652c1e4085afeb22fdc256c6757d751b/45c2493abe68de3dac7e98b0dadcf8ce.flv",
      "sign_url" : "",
      "cover_info_array" : [ {
        "cover_url" : "https://651.cdn-vod.huaweicloud.com/asset/652c1e4085afeb22fdc256c6757d751b/cover/Cover0.jpg"
      } ],
      "subtitle_info" : [ ],
      "source_path" : {
        "bucket" : "obs-host",
        "location" : "cn-north-4",
        "object" : "1/okFLV.flv"
      },
      "output_path" : {
        "bucket" : "obs-host",
        "location" : "cn-north-4",
        "object" : "output/652c1e4085afeb22fdc256c6757d751b/"
      }
    },
    "play_info_array" : [ {
      "play_type" : "hls",
      "url" : "https://651.cdn-vod.huaweicloud.com/asset/652c1e4085afeb22fdc256c6757d751b/play_video/index.m3u8",
      "encrypted" : 0,
      "meta_data" : {
        "pack_type" : null,
        "codec" : "H.264",
        "duration" : 0,
        "video_size" : 0,
        "width" : 0,
        "hight" : 0,
        "bit_rate" : 0,
        "frame_rate" : 0,
        "quality" : null
      }
    }, {
      "play_type" : "hls",
      "url" : "https://651.cdn-vod.huaweicloud.com/asset/652c1e4085afeb22fdc256c6757d751b/play_video/b5d498082bbcff7a2055041d803ae2f9_1.m3u8",
      "encrypted" : 0,
      "meta_data" : {
        "pack_type" : null,
        "codec" : "H.264",
        "duration" : 205,
        "video_size" : 14669824,
        "width" : 512,
        "hight" : 288,
        "bit_rate" : 534,
        "frame_rate" : 0,
        "quality" : null
      }
    } ]
  } ],
  "is_truncated" : 0,
  "total" : 1
}
{
  "asset_info_array" : [ {
    "asset_id" : "652c1e4085afeb22fdc256c6757d751b",
    "status" : "PUBLISHED",
    "description" : "Asset meta is published",
    "base_info" : {
      "title" : "okFLV.flv",
      "video_name" : "okFLV.flv",
      "description" : null,
      "category_id" : -1,
      "category_name": "Other",
      "create_time" : "20190704144303",
      "last_modified" : "20190704144303",
      "video_type" : "FLV",
      "tags" : null,
      "meta_data" : {
        "pack_type" : null,
        "codec" : "H.264",
        "duration" : 244,
        "video_size" : 13682041,
        "width" : 512,
        "hight" : 288,
        "bit_rate" : 448,
        "frame_rate" : 30,
        "quality" : null
      },
      "video_url" : "https://651.cdn-vod.huaweicloud.com/asset/652c1e4085afeb22fdc256c6757d751b/45c2493abe68de3dac7e98b0dadcf8ce.flv",
      "sign_url" : "",
      "cover_info_array" : [ {
        "cover_url" : "https://651.cdn-vod.huaweicloud.com/asset/652c1e4085afeb22fdc256c6757d751b/cover/Cover0.jpg"
      } ],
      "subtitle_info" : [ ],
      "source_path" : {
        "bucket" : "obs-host",
        "location" : "cn-north-4",
        "object" : "1/okFLV.flv"
      },
      "output_path" : {
        "bucket" : "obs-host",
        "location" : "cn-north-4",
        "object" : "output/652c1e4085afeb22fdc256c6757d751b/"
      }
    },
    "play_info_array" : [ {
      "play_type" : "hls",
      "url" : "https://651.cdn-vod.huaweicloud.com/asset/652c1e4085afeb22fdc256c6757d751b/play_video/index.m3u8",
      "encrypted" : 0,
      "meta_data" : {
        "pack_type" : null,
        "codec" : "H.264",
        "duration" : 0,
        "video_size" : 0,
        "width" : 0,
        "hight" : 0,
        "bit_rate" : 0,
        "frame_rate" : 0,
        "quality" : null
      }
    }, {
      "play_type" : "hls",
      "url" : "https://651.cdn-vod.huaweicloud.com/asset/652c1e4085afeb22fdc256c6757d751b/play_video/b5d498082bbcff7a2055041d803ae2f9_1.m3u8",
      "encrypted" : 0,
      "meta_data" : {
        "pack_type" : null,
        "codec" : "H.264",
        "duration" : 205,
        "video_size" : 14669824,
        "width" : 512,
        "hight" : 288,
        "bit_rate" : 534,
        "frame_rate" : 0,
        "quality" : null
      }
    } ]
  } ],
  "is_truncated" : 0,
  "total" : 1
}

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