igpapi — Instagram private API Simulator for Node.js (API reference) 4.14.0
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    Variable PostingStoryVideoEditorInputSchemaConst Internal

    PostingStoryVideoEditorInputSchema: Struct<
        {
            cameraSessionId: String;
            folder: String;
            origin: Literals<readonly ["feed", "reels-tab"]>;
            takenAt: optionalKey<Number>;
            video: Struct<
                {
                    byteLength: Number;
                    durationMs: Number;
                    height: Number;
                    id: String;
                    kind: Literal<"video">;
                    mimeType: Literal<"video/mp4">;
                    width: Number;
                },
            >;
        },
    > = ...

    What the story video editor opens with, as the camera's gallery pick hands it over: the picked video's descriptor (its bytes stay in the process's media pool), the asset's facts from the device's media store (takenAt, when it was taken, in epoch seconds; folder), where the camera was opened from and the id of the camera session the pick was made in.