fetch file name, description, id and extension from assetLibrary videos - ajax

Question

let rootUrl = 'https://example.sharepoint.com/'
$.ajax({
url: `${rootUrl}_api/web/lists/getByTitle('videos')/items?$select=Id,Title,VideoSetDescription&$filter=ContentType eq 'Video'`,
type: 'GET',
headers: {
accept: 'application/json;odata=verbose'
},
success: res => console.log(res.d.results),
error: err => console.log(JSON.stringify(err))
})
i am getting the filename as example., how can i get the filename with extension
like example.mp4
also i need to get the Id,Title and VideoSetDescription too.

Answer 1

In your case the query returns the list of items which corresponds to so called video sets (filter by Video content type). Which in turn represent the containers where one or more files are actually stored. Refer Video Experience in SharePoint 2013 on how videos organized in Assets library for a more details.
Having said that you could append &$expand=Folder/Files expression to your query which tells to return uploaded files along with the items.Then file name could be printed like this:
success: response => {
response.d.results.forEach( item => {
console.log(item.Folder.Files.results[0].Name); //print first uploaded file
});
},
To retrieve only the list of items associated with uploaded files the following query could be utilized:
/_api/web/lists/getByTitle('<Assets Library>')/items?$select=FileLeafRef&$filter=ContentType eq 'Video Rendition'