From 2a327f08772f6b9ada7f2f4792f9b7d0e16a5fa1 Mon Sep 17 00:00:00 2001
From: Kehan Li <78654844+lkhl@users.noreply.github.com>
Date: Sun, 19 Apr 2026 00:04:01 +0800
Subject: [PATCH] Fix Qwen3.5 video processing when passing video_data in
 "processor_output" format (#22431)

---
 python/sglang/srt/multimodal/processors/qwen_vl.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/python/sglang/srt/multimodal/processors/qwen_vl.py b/python/sglang/srt/multimodal/processors/qwen_vl.py
index 605fbb8d9..7dd36c2dd 100644
--- a/python/sglang/srt/multimodal/processors/qwen_vl.py
+++ b/python/sglang/srt/multimodal/processors/qwen_vl.py
@@ -162,7 +162,7 @@ async def preprocess_video(
     # preprocessed video
     is_video_obj = isinstance(vr, VideoDecoderWrapper)
     if not is_video_obj:
-        return vr
+        return vr, None
     entry_time = time.perf_counter()
 
     total_frames, video_fps = len(vr), vr.avg_fps