{"record":{"id":"b0d337613eb89b9d","repo":"vercel/ai","slug":"the-gemini-live-transcription-api-only-supports-16","errorCode":null,"errorMessage":"The Gemini Live transcription API only supports 16kHz 16-bit PCM input audio.","messagePattern":"The Gemini Live transcription API only supports 16kHz 16-bit PCM input audio\\.","errorType":"validation","errorClass":"InvalidArgumentError","httpStatus":null,"severity":"error","filePath":"packages/google-vertex/src/gemini-transcription/google-vertex-gemini-transcription-model.ts","lineNumber":657,"sourceCode":"    config.wordTimestamp = options.wordTimestamp;\n  }\n  if (options.diarization != null) {\n    config.diarization = options.diarization;\n  }\n  if (options.mode != null) {\n    config.mode = options.mode;\n  }\n  return Object.keys(config).length > 0 ? config : undefined;\n}\n\nfunction validateLiveInputAudioFormat(\n  inputAudioFormat: TranscriptionModelV4StreamOptions['inputAudioFormat'],\n) {\n  if (\n    inputAudioFormat.type !== 'audio/pcm' ||\n    (inputAudioFormat.rate != null && inputAudioFormat.rate !== 16000)\n  ) {\n    throw new InvalidArgumentError({\n      argument: 'inputAudioFormat',\n      message:\n        'The Gemini Live transcription API only supports 16kHz 16-bit PCM input audio.',\n    });\n  }\n}\n\n/** Parses a Google duration offset such as `\"1s\"` or `\"9.400s\"` to seconds. */\nfunction parseOffsetSeconds(\n  offset: string | undefined | null,\n): number | undefined {\n  if (offset == null) return undefined;\n  const parsed = Number.parseFloat(offset);\n  return Number.isFinite(parsed) ? parsed : undefined;\n}\n\nconst googleVertexGeminiTranscriptionWordSchema = z.object({\n  word: z.string().nullish(),","sourceCodeStart":639,"sourceCodeEnd":675,"githubUrl":"https://github.com/vercel/ai/blob/69428b1f8b037e4d118fb4853428d5c4e620493c/packages/google-vertex/src/gemini-transcription/google-vertex-gemini-transcription-model.ts#L639-L675","documentation":"Error \"The Gemini Live transcription API only supports 16kHz 16-bit PCM input audio.\" thrown in vercel/ai.","triggerScenarios":"Thrown at packages/google-vertex/src/gemini-transcription/google-vertex-gemini-transcription-model.ts:657 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"69428b1f8b037e4d118fb4853428d5c4e620493c","analyzedAt":"2026-08-30T12:32:21.016Z","schemaVersion":2},"datasetVersion":"2026-08-30T13:17:10.514Z"}