> ## Documentation Index > Fetch the complete documentation index at: https://gcore.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Set defaults for quality sets > Method to set default quality set for VOD and Live transcoding. For changing default quality set, specify the ID of the custom quality set from the method GET /`quality_sets`. Default value can be reverted to the system defaults (cleared) by setting ``` "id": null ```. Live transcoding management: - You can specify quality set explicitly in POST /streams method, look at attribute "quality_set_id". - Otherwise these default values will be used by the system by default. VOD transcoding management: - You can specify quality set explicitly in POST /videos method, look at attribute "quality_set_id". - Otherwise these default values will be used by the system by default. ## OpenAPI ````yaml /api-reference/services_documented/streaming_api.yaml put /streaming/quality_sets/default openapi: 3.1.0 info: title: Gcore OpenAPI – Streaming API description: >- This OpenAPI is an aggregated OpenAPI specification that unifies all Gcore products into a single file. It covers Cloud, CDN, DNS, WAAP, DDoS Protection, Object Storage, Streaming, and FastEdge services. version: '2026-05-15T06:37:28.230198+00:00' servers: - url: https://api.gcore.com security: - APIKey: [] tags: - name: AI x-displayName: AI - name: Broadcasts x-displayName: Broadcasts - name: Directories x-displayName: Directories - name: Overlays x-displayName: Overlays - name: Players x-displayName: Players - name: Playlists x-displayName: Playlists - name: QualitySets x-displayName: QualitySets - name: Restreams x-displayName: Restreams - name: Streaming Statistics x-displayName: Statistics - name: Streams x-displayName: Streams - name: Subtitles x-displayName: Subtitles - name: Videos x-displayName: Videos paths: /streaming/quality_sets/default: put: tags: - QualitySets summary: Set defaults for quality sets description: >- Method to set default quality set for VOD and Live transcoding. For changing default quality set, specify the ID of the custom quality set from the method GET /`quality_sets`. Default value can be reverted to the system defaults (cleared) by setting ``` "id": null ```. Live transcoding management: - You can specify quality set explicitly in POST /streams method, look at attribute "quality_set_id". - Otherwise these default values will be used by the system by default. VOD transcoding management: - You can specify quality set explicitly in POST /videos method, look at attribute "quality_set_id". - Otherwise these default values will be used by the system by default. operationId: put_qualityset_default requestBody: content: application/json: schema: $ref: '#/components/schemas/qualitysetDefault' required: true responses: '200': description: Successful content: application/json: schema: $ref: '#/components/schemas/qualitysets' '400': description: One or more parameters were specified incorrectly, check the request content: application/json: schema: $ref: '#/components/schemas/badrequest' x-codeSamples: - lang: Python source: |- import os from gcore import Gcore client = Gcore( api_key=os.environ.get("GCORE_API_KEY"), # This is the default and can be omitted ) quality_sets = client.streaming.quality_sets.set_default() print(quality_sets.live) - lang: Go source: "package main\n\nimport (\n\t\"context\"\n\t\"fmt\"\n\n\t\"github.com/G-Core/gcore-go\"\n\t\"github.com/G-Core/gcore-go/option\"\n\t\"github.com/G-Core/gcore-go/streaming\"\n)\n\nfunc main() {\n\tclient := gcore.NewClient(\n\t\toption.WithAPIKey(\"My API Key\"),\n\t)\n\tqualitySets, err := client.Streaming.QualitySets.SetDefault(context.TODO(), streaming.QualitySetSetDefaultParams{})\n\tif err != nil {\n\t\tpanic(err.Error())\n\t}\n\tfmt.Printf(\"%+v\\n\", qualitySets.Live)\n}\n" components: schemas: qualitysetDefault: type: object properties: live: type: object properties: id: type: integer default: null description: ID of the custom quality set, or "null" for the system default vod: type: object properties: id: type: integer default: null description: ID of the custom quality set, or "null" for the system default example: live: id: 77 vod: id: null qualitysets: type: object properties: live: type: array items: $ref: '#/components/schemas/qualityset1' vod: type: array items: $ref: '#/components/schemas/qualityset1' example: live: - id: 77 name: Live 4K UHD 60fps AV1 (custom) default: true qualities: - id: 1 name: vod2160n - id: 2 name: vod1440n vod: [] badrequest: type: object properties: status: type: integer description: Error number error: type: string description: Error message example: status: 400 error: >- Bad Request response status code indicates that the server cannot or will not process the request due to something that is perceived to be a client error (for example, malformed request syntax, invalid request message framing, or deceptive request routing). qualityset1: type: object properties: id: type: integer description: ID of the custom quality set name: type: string description: Human readable name of the quality set default: type: boolean description: States if this preset is default for a client profile qualities: type: array description: Array of associated qualities items: type: object properties: id: type: integer description: ID of the quality name: type: string description: Name of the quality securitySchemes: APIKey: description: >- API key for authentication. Make sure to include the word `apikey`, followed by a single space and then your token. Example: `apikey 1234$abcdef` type: apiKey in: header name: Authorization ````