Why is the video from vk api not coming?

Question

Android

I registered the standalone application in VK. The goal is to show video from VK in your Android application using the ExoPlayer library.
I make a request

https://api.vk.com/method/video.get?owner_id=-<owner_id>&v=5.73&access_token=<my_service_token>&videos=-<video_id>

But in response comes:

{
    "response": {
        "count": 1,
        "items": []
    }
}

those. items is empty even though the video exists and is public. What's wrong? And in general, is it really possible to show public videos from VK in a mobile application?

Answer 1

When receiving objects that may not be directly accessible, for example, photos or videos in the news, the access_key field comes along with the objects, which must be passed when receiving these objects directly or when performing actions with them

access_key must be added to the string object id via an underscore character:
123456_654312_6d103522bc13b790c5