{"record":{"id":"74d475af2e9cb342","repo":"musistudio/claude-code-router","slug":"duration-must-be-one-of-constraints-durations-jo","errorCode":null,"errorMessage":"duration must be one of ${constraints.durations.join(\", \")} seconds for ${target.protocol}.","messagePattern":"duration must be one of (.+?) seconds for (.+?)\\.","errorType":"validation","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"packages/core/src/media/service.ts","lineNumber":157,"sourceCode":"  async imageEdit(args: Record<string, unknown>, modelInput: MediaModelInput): Promise<PublicMediaJob> {\n    const request: ImageEditRequest = {\n      aspectRatio: optionalString(args.aspect_ratio),\n      images: this.validateImages(args.images ?? args.image, 1, 3),\n      prompt: requiredPrompt(args.prompt)\n    };\n    const modelPlan = this.mediaModelPlan(\"image-edit\", modelInput);\n    return this.submitAndWait(\"image-edit\", request, modelPlan, optionalString(args.idempotency_key));\n  }\n\n  videoStart(args: Record<string, unknown>, modelInput: MediaModelInput): PublicMediaJob {\n    const modelPlan = this.mediaModelPlan(\"video-generate\", modelInput);\n    const target = resolveProviderMediaTarget(this.requireConfig(), modelPlan.modelSelector, \"video-generate\");\n    const constraints = videoGenerationConstraints(target.protocol);\n    const durationValue = numberValue(args.duration) ?? constraints.defaultDuration;\n    if (durationValue === undefined) throw new Error(`duration is required for ${target.protocol}.`);\n    if (!Number.isInteger(durationValue)) throw new Error(\"duration must be an integer number of seconds.\");\n    if (constraints.durations && !constraints.durations.includes(durationValue)) {\n      throw new Error(`duration must be one of ${constraints.durations.join(\", \")} seconds for ${target.protocol}.`);\n    }\n    if (constraints.durationMinimum !== undefined && constraints.durationMaximum !== undefined &&\n      (durationValue < constraints.durationMinimum || durationValue > constraints.durationMaximum)) {\n      throw new Error(`duration must be between ${constraints.durationMinimum} and ${constraints.durationMaximum} seconds for ${target.protocol}.`);\n    }\n    const resolution = optionalString(args.resolution) ?? constraints.defaultResolution;\n    if (!resolution) throw new Error(`resolution is required for ${target.protocol}.`);\n    if (!constraints.resolutions.includes(resolution)) {\n      throw new Error(`resolution must be one of ${constraints.resolutions.join(\", \")} for ${target.protocol}.`);\n    }\n    const aspectRatio = optionalString(args.aspect_ratio);\n    if (constraints.requiredParameters.includes(\"aspect_ratio\") && !aspectRatio) {\n      throw new Error(`aspect_ratio is required for ${target.protocol}.`);\n    }\n    if (aspectRatio && !constraints.aspectRatios.includes(aspectRatio)) {\n      throw new Error(`aspect_ratio must be one of ${constraints.aspectRatios.join(\", \")} for ${target.protocol}.`);\n    }\n    const request: VideoGenerateRequest = {","sourceCodeStart":139,"sourceCodeEnd":175,"githubUrl":"https://github.com/musistudio/claude-code-router/blob/99f24806c6a2c660b16e53e95211c517448a6c90/packages/core/src/media/service.ts#L139-L175","documentation":"Thrown when the protocol defines a fixed allowlist of durations (constraints.durations) and the supplied duration isn't in it. Some providers only accept discrete values (e.g. 5 or 10 seconds), unlike providers with a min/max range.","triggerScenarios":"Passing a duration outside the protocol's discrete set — e.g. duration: 7 for a protocol that only allows [5, 10].","commonSituations":"Assuming any integer in a range is accepted after switching protocols; hardcoded duration values from old provider integrations; ignoring the error message that lists the allowed values.","solutions":["Use one of the durations listed verbatim in the error message","Read constraints.durations via videoGenerationConstraints(protocol) to build a dynamic picker in your UI","Clamp user input to the nearest allowed value before calling"],"exampleFix":"// before\nmedia.videoStart({ prompt, duration: 7 }, modelInput);\n\n// after\nmedia.videoStart({ prompt, duration: 5 }, modelInput); // protocol allows 5 or 10","handlingStrategy":"validation","validationCode":"const c = videoGenerationConstraints(protocol);\nif (c.durations && !c.durations.includes(duration)) {\n  duration = c.durations.reduce((a, b) => Math.abs(b - duration) < Math.abs(a - duration) ? b : a);\n}","typeGuard":"const isAllowedDuration = (d: number, c: VideoConstraints): boolean =>\n  !c.durations || c.durations.includes(d);","tryCatchPattern":null,"preventionTips":["Build duration pickers from constraints.durations","Snap user input to the nearest allowed value"],"tags":["media","video","validation","allowed-values"],"backgroundTag":"parameter-validation-failed","analyzedSha":"99f24806c6a2c660b16e53e95211c517448a6c90","analyzedAt":"2026-08-27T04:11:01.184Z","schemaVersion":2},"datasetVersion":"2026-08-27T08:17:20.692Z"}