From 35c3d80ab9ea2def6bf7ca0a26c09263257e3485 Mon Sep 17 00:00:00 2001
From: Luis Pater <webmaster@idotorg.org>
Date: Sat, 20 Jun 2026 14:46:39 +0800
Subject: [PATCH] feat(translator): add support for handling video URLs in
 Gemini requests

- Updated `ConvertOpenAIRequestToGemini` to process `video_url` message types, extracting and embedding video metadata (MIME type and base64 data) into Gemini request parts.
- Added corresponding unit tests to validate `video_url` handling, ensuring proper extraction and data preservation.

Closes: #3920
---
 .../chat-completions/gemini_openai_request.go | 12 +++++++
 .../gemini_openai_request_test.go             | 32 +++++++++++++++++++
 2 files changed, 44 insertions(+)

diff --git a/internal/translator/gemini/openai/chat-completions/gemini_openai_request.go b/internal/translator/gemini/openai/chat-completions/gemini_openai_request.go
index f8ab5ddc..28086f52 100644
--- a/internal/translator/gemini/openai/chat-completions/gemini_openai_request.go
+++ b/internal/translator/gemini/openai/chat-completions/gemini_openai_request.go
@@ -196,6 +196,18 @@ func ConvertOpenAIRequestToGemini(modelName string, inputRawJSON []byte, _ bool)
 									p++
 								}
 							}
+						case "video_url":
+							videoURL := item.Get("video_url.url").String()
+							if len(videoURL) > 5 {
+								pieces := strings.SplitN(videoURL[5:], ";", 2)
+								if len(pieces) == 2 && len(pieces[1]) > 7 {
+									mime := pieces[0]
+									data := pieces[1][7:]
+									node, _ = sjson.SetBytes(node, "parts."+itoa(p)+".inlineData.mime_type", mime)
+									node, _ = sjson.SetBytes(node, "parts."+itoa(p)+".inlineData.data", data)
+									p++
+								}
+							}
 						case "file":
 							filename := item.Get("file.filename").String()
 							fileData := item.Get("file.file_data").String()
diff --git a/internal/translator/gemini/openai/chat-completions/gemini_openai_request_test.go b/internal/translator/gemini/openai/chat-completions/gemini_openai_request_test.go
index 27e999e3..ad79869c 100644
--- a/internal/translator/gemini/openai/chat-completions/gemini_openai_request_test.go
+++ b/internal/translator/gemini/openai/chat-completions/gemini_openai_request_test.go
@@ -59,6 +59,38 @@ func TestConvertOpenAIRequestToGeminiPreservesInputAudio(t *testing.T) {
 	}
 }
 
+func TestConvertOpenAIRequestToGeminiPreservesVideoURL(t *testing.T) {
+	inputJSON := `{
+		"model": "gemini-3-flash",
+		"messages": [
+			{
+				"role": "user",
+				"content": [
+					{"type": "video_url", "video_url": {"url": "data:video/mp4;base64,AAAAIGZ0eXBtcDQy"}},
+					{"type": "text", "text": "Describe the video"}
+				]
+			}
+		]
+	}`
+
+	result := ConvertOpenAIRequestToGemini("gemini-3-flash", []byte(inputJSON), false)
+	resultJSON := gjson.ParseBytes(result)
+	parts := resultJSON.Get("contents.0.parts").Array()
+
+	if len(parts) != 2 {
+		t.Fatalf("parts length = %d, want 2. parts=%s", len(parts), resultJSON.Get("contents.0.parts").Raw)
+	}
+	if got := parts[0].Get("inlineData.mime_type").String(); got != "video/mp4" {
+		t.Fatalf("video mime_type = %q, want %q", got, "video/mp4")
+	}
+	if got := parts[0].Get("inlineData.data").String(); got != "AAAAIGZ0eXBtcDQy" {
+		t.Fatalf("video data = %q, want %q", got, "AAAAIGZ0eXBtcDQy")
+	}
+	if got := parts[1].Get("text").String(); got != "Describe the video" {
+		t.Fatalf("text part = %q, want prompt text", got)
+	}
+}
+
 func TestConvertOpenAIRequestToGeminiCleansToolSchemaRequiredFields(t *testing.T) {
 	inputJSON := `{
 		"model": "gemini-2.0-flash",
-- 
2.51.2