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Send videos to Gemini at 3 fps and allow larger WebSocket payloads

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Map video_url parts to inline data for Google and attach
videoMetadata.fps = 3 to every video part (media resolution stays at
the default). Raise the WebSocket maxPayloadLength from Bun's 16 MB
default to 100 MB so threads with several base64 videos still fit.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
multipleof4
2026-10-12 18:57:42 +00:00
co-authored by Claude Opus 5.5
parent 399406a23e
commit 2523deb0e3
2 changed files with 9 additions and 1 deletions
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index.js
+2
View File
@@ -48,6 +48,8 @@ Bun.serve({
},
websocket: {
// Videos ride along as base64 in every request; Bun's 16 MB default fits only a handful
maxPayloadLength: 100 * 1024 * 1024,
open(ws) {
const { uid } = ws.data
addSocket(uid, ws)
providers.js
+7 -1
View File
@@ -57,6 +57,10 @@ const inlineFromDataUrl = u => {
return m ? { inlineData: { mimeType: m[1], data: m[2] } } : null
}
// Gemini samples video at 1 fps by default; media resolution stays at the default (70 tokens/frame)
const VIDEO_FPS = 3
const withVideoFps = p => p?.inlineData?.mimeType?.startsWith('video/') ? { ...p, videoMetadata: { fps: VIDEO_FPS } } : p
function mapPartToGoogle(p) {
if (!p) return null
if (typeof p === 'string') return p.trim() ? { text: p } : null
@@ -65,6 +69,8 @@ function mapPartToGoogle(p) {
return p.text?.trim() ? { text: p.text } : null
case 'image_url':
return inlineFromDataUrl(p.image_url?.url || p.image_url)
case 'video_url':
return inlineFromDataUrl(p.video_url?.url || p.video_url)
case 'input_audio':
return p.input_audio?.data
? { inlineData: { mimeType: p.input_audio.format === 'mp3' ? 'audio/mp3' : 'audio/wav', data: p.input_audio.data } }
@@ -87,7 +93,7 @@ function mapToGoogleContents(messages) {
if (!m || m.role === 'system') continue
const role = m.role === 'assistant' ? 'model' : 'user'
const src = Array.isArray(m.content) ? m.content : [{ type: 'text', text: String(m.content ?? '') }]
const parts = src.map(mapPartToGoogle).filter(Boolean)
const parts = src.map(mapPartToGoogle).filter(Boolean).map(withVideoFps)
for (const img of m.images || []) {
const ip = inlineFromDataUrl(img?.image_url?.url || img?.image_url)
if (ip) parts.push(ip)