diff --git a/restored-src/src/services/api/claude.ts b/restored-src/src/services/api/claude.ts
index 89a6e6619..491e1e17e 100644
--- a/restored-src/src/services/api/claude.ts
+++ b/restored-src/src/services/api/claude.ts
@@ -100,6 +100,7 @@ import {
   extractQuotaStatusFromHeaders,
 } from '../claudeAiLimits.js'
 import { getAPIContextManagement } from '../compact/apiMicrocompact.js'
+import { normalizeMiniMaxVideoContent } from './minimaxVideoInput.js'
 
 /* eslint-disable @typescript-eslint/no-require-imports */
 const autoModeStateModule = feature('TRANSCRIPT_CLASSIFIER')
@@ -591,14 +592,15 @@ export function userMessageToMessageParam(
   enablePromptCaching: boolean,
   querySource?: QuerySource,
 ): MessageParam {
+  const content = normalizeMiniMaxVideoContent(message.message.content)
   if (addCache) {
-    if (typeof message.message.content === 'string') {
+    if (typeof content === 'string') {
       return {
         role: 'user',
         content: [
           {
             type: 'text',
-            text: message.message.content,
+            text: content,
             ...(enablePromptCaching && {
               cache_control: getCacheControl({ querySource }),
             }),
@@ -608,9 +610,9 @@ export function userMessageToMessageParam(
     } else {
       return {
         role: 'user',
-        content: message.message.content.map((_, i) => ({
+        content: content.map((_, i) => ({
           ..._,
-          ...(i === message.message.content.length - 1
+          ...(i === content.length - 1
             ? enablePromptCaching
               ? { cache_control: getCacheControl({ querySource }) }
               : {}
@@ -624,9 +626,7 @@ export function userMessageToMessageParam(
   // to addCacheBreakpoints share the same array and each splices in duplicate cache_edits.
   return {
     role: 'user',
-    content: Array.isArray(message.message.content)
-      ? [...message.message.content]
-      : message.message.content,
+    content: Array.isArray(content) ? [...content] : content,
   }
 }
 
diff --git a/restored-src/src/services/api/minimaxVideoInput.test.ts b/restored-src/src/services/api/minimaxVideoInput.test.ts
new file mode 100644
index 000000000..685e4e586
--- /dev/null
+++ b/restored-src/src/services/api/minimaxVideoInput.test.ts
@@ -0,0 +1,79 @@
+import assert from 'node:assert/strict'
+import test from 'node:test'
+import type { BetaContentBlockParam } from '@anthropic-ai/sdk/resources/beta/messages/messages.mjs'
+import { normalizeMiniMaxVideoContent } from './minimaxVideoInput.ts'
+
+function asContent(blocks: unknown[]): BetaContentBlockParam[] {
+  return blocks as BetaContentBlockParam[]
+}
+
+test('translates a video URL for the global Anthropic-compatible route', () => {
+  const content = asContent([
+    { type: 'text', text: 'Describe this video.' },
+    {
+      type: 'video_url',
+      video_url: { url: 'https://example.com/demo.mp4' },
+    },
+  ])
+
+  assert.deepEqual(
+    normalizeMiniMaxVideoContent(
+      content,
+      'https://api.minimax.io/anthropic/',
+    ),
+    [
+      { type: 'text', text: 'Describe this video.' },
+      {
+        type: 'video',
+        source: { type: 'url', url: 'https://example.com/demo.mp4' },
+      },
+    ],
+  )
+})
+
+test('preserves video sampling options for the China route', () => {
+  const content = asContent([
+    {
+      type: 'video_url',
+      video_url: {
+        url: 'mm_file://video-file',
+        detail: 'high',
+        fps: 2,
+        max_long_side_pixel: 1080,
+      },
+    },
+  ])
+
+  assert.deepEqual(
+    normalizeMiniMaxVideoContent(
+      content,
+      'https://api.minimaxi.com/anthropic',
+    ),
+    [
+      {
+        type: 'video',
+        source: {
+          type: 'url',
+          url: 'mm_file://video-file',
+          detail: 'high',
+          fps: 2,
+          max_long_side_pixel: 1080,
+        },
+      },
+    ],
+  )
+})
+
+test('leaves content unchanged for other routes', () => {
+  const content = asContent([
+    {
+      type: 'video_url',
+      video_url: { url: 'https://example.com/demo.mp4' },
+    },
+  ])
+
+  assert.strictEqual(
+    normalizeMiniMaxVideoContent(content, 'https://example.com/anthropic'),
+    content,
+  )
+})
diff --git a/restored-src/src/services/api/minimaxVideoInput.ts b/restored-src/src/services/api/minimaxVideoInput.ts
new file mode 100644
index 000000000..d30514750
--- /dev/null
+++ b/restored-src/src/services/api/minimaxVideoInput.ts
@@ -0,0 +1,64 @@
+import type { BetaContentBlockParam } from '@anthropic-ai/sdk/resources/beta/messages/messages.mjs'
+
+type MiniMaxVideoURLBlock = {
+  type: 'video_url'
+  video_url: {
+    url: string
+    detail?: 'low' | 'default' | 'high'
+    fps?: number
+    max_long_side_pixel?: number
+  }
+}
+
+const MINIMAX_ANTHROPIC_BASE_URLS = new Set([
+  'https://api.minimax.io/anthropic',
+  'https://api.minimaxi.com/anthropic',
+])
+
+function isMiniMaxAnthropicBaseUrl(baseUrl: string | undefined): boolean {
+  if (!baseUrl) return false
+
+  try {
+    const url = new URL(baseUrl)
+    const normalizedPath = url.pathname.replace(/\/+$/, '')
+    return MINIMAX_ANTHROPIC_BASE_URLS.has(`${url.origin}${normalizedPath}`)
+  } catch {
+    return false
+  }
+}
+
+export function normalizeMiniMaxVideoContent(
+  content: string | BetaContentBlockParam[],
+  baseUrl = process.env.ANTHROPIC_BASE_URL,
+): string | BetaContentBlockParam[] {
+  if (typeof content === 'string' || !isMiniMaxAnthropicBaseUrl(baseUrl)) {
+    return content
+  }
+
+  let changed = false
+  const normalized = content.map(block => {
+    const candidate = block as unknown as MiniMaxVideoURLBlock
+    if (
+      candidate.type !== 'video_url' ||
+      typeof candidate.video_url?.url !== 'string' ||
+      candidate.video_url.url.length === 0
+    ) {
+      return block
+    }
+
+    changed = true
+    const { url, detail, fps, max_long_side_pixel } = candidate.video_url
+    return {
+      type: 'video',
+      source: {
+        type: 'url',
+        url,
+        ...(detail !== undefined && { detail }),
+        ...(fps !== undefined && { fps }),
+        ...(max_long_side_pixel !== undefined && { max_long_side_pixel }),
+      },
+    } as unknown as BetaContentBlockParam
+  })
+
+  return changed ? normalized : content
+}