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feat(llm): add video and audio media support to Gemini protocol #31889

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feat(llm): add video and audio media support to Gemini protocol #31889

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860db2d
feat(core): add video media support (mp4, webm) to read tool and Gemi…
remorses Jun 11, 2026
bd14ce7
refactor(core): revert read tool video changes, keep protocol-only su…
remorses Jun 11, 2026
ce2bd13
fix(llm): address review feedback for video media support
remorses Jun 11, 2026
1953862
feat(llm): add video media support to Gemini protocol
remorses Jun 11, 2026
40a9133
feat(llm): raise media size limits to 20 MB decoded / 28 MB encoded
remorses Jun 11, 2026
5cf63f2
feat(llm): add audio media support to Gemini protocol
remorses Jun 15, 2026
963371a
fix(llm): restrict audio MIME types to Gemini-supported formats
remorses Jun 15, 2026
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6 changes: 3 additions & 3 deletions packages/llm/src/protocols/gemini.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,7 @@ import { GeminiToolSchema } from "./utils/gemini-tool-schema"
import { Lifecycle } from "./utils/lifecycle"

const ADAPTER = "gemini"
const IMAGE_MIMES = new Set<string>(ProviderShared.IMAGE_MIMES)
const MEDIA_MIMES = new Set<string>(ProviderShared.MEDIA_MIMES)
export const DEFAULT_BASE_URL = "https://generativelanguage.googleapis.com/v1beta"

// =============================================================================
Expand Down Expand Up @@ -182,7 +182,7 @@ const lowerToolConfig = (toolChoice: NonNullable<LLMRequest["toolChoice"]>) =>

const lowerUserPart = Effect.fn("Gemini.lowerUserPart")(function* (part: TextPart | MediaPart) {
if (part.type === "text") return { text: part.text }
const media = yield* ProviderShared.validateMedia("Gemini", part, IMAGE_MIMES)
const media = yield* ProviderShared.validateMedia("Gemini", part, MEDIA_MIMES)
return { inlineData: { mimeType: media.mime, data: media.base64 } }
})

Expand Down Expand Up @@ -275,7 +275,7 @@ const lowerMessages = Effect.fn("Gemini.lowerMessages")(function* (request: LLMR
})
for (const item of content) {
if (item.type === "text") continue
const media = yield* ProviderShared.validateToolFile("Gemini", item, IMAGE_MIMES)
const media = yield* ProviderShared.validateToolFile("Gemini", item, MEDIA_MIMES)
parts.push({ inlineData: { mimeType: media.mime, data: media.base64 } })
}
}
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7 changes: 5 additions & 2 deletions packages/llm/src/protocols/shared.ts
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Expand Up @@ -188,8 +188,11 @@ export const parseToolInput = (route: string, name: string, raw: string) =>
parseJson(route, raw || "{}", `Invalid JSON input for ${route} tool call ${name}`)

export const IMAGE_MIMES = ["image/png", "image/jpeg", "image/gif", "image/webp"] as const
export const MAX_MEDIA_ENCODED_BYTES = 8 * 1024 * 1024
export const MAX_MEDIA_DECODED_BYTES = 6 * 1024 * 1024
export const VIDEO_MIMES = ["video/mp4", "video/webm", "video/quicktime"] as const
export const AUDIO_MIMES = ["audio/wav", "audio/mp3", "audio/aiff", "audio/aac", "audio/ogg", "audio/flac"] as const
export const MEDIA_MIMES = [...IMAGE_MIMES, ...VIDEO_MIMES, ...AUDIO_MIMES] as const
export const MAX_MEDIA_ENCODED_BYTES = 28 * 1024 * 1024
export const MAX_MEDIA_DECODED_BYTES = 20 * 1024 * 1024

const base64Pattern = /^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?$/

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