diff --git a/app/services/grok/services/video.py b/app/services/grok/services/video.py
index 6ae2476..5d44292 100644
--- a/app/services/grok/services/video.py
+++ b/app/services/grok/services/video.py
@@ -1360,6 +1360,21 @@ class VideoService:
 
                 # Process response.
                 if is_stream:
+                    try:
+                        stream_iter = response.__aiter__()
+                        # 诱发初始请求，若发生 401 等异常，将在 completions 的 try 块内被捕捉。
+                        first_chunk = await stream_iter.__anext__()
+                    except StopAsyncIteration:
+                        first_chunk = None
+
+                    async def _merged_stream(first, remaining):
+                        if first is not None:
+                            yield first
+                        async for chunk in remaining:
+                            yield chunk
+
+                    combined_response = _merged_stream(first_chunk, stream_iter)
+                    
                     processor = VideoStreamProcessor(
                         model,
                         token,
@@ -1368,7 +1383,7 @@ class VideoService:
                         idle_timeout_override=None,
                     )
                     return wrap_stream_with_usage(
-                        processor.process(response), token_mgr, token, model
+                        processor.process(combined_response), token_mgr, token, model
                     )
 
                 result = await VideoCollectProcessor(
@@ -1394,10 +1409,14 @@ class VideoService:
 
             except UpstreamException as e:
                 last_error = e
-                if rate_limited(e):
-                    await token_mgr.mark_rate_limited(token)
+                status_code = e.details.get("status") if e.details else getattr(e, "status_code", None)
+                if rate_limited(e) or status_code == 401:
+                    if rate_limited(e):
+                        await token_mgr.mark_rate_limited(token)
+                    else:
+                        await token_mgr.record_fail(token, status_code, "video_auth_failed_401")
                     logger.warning(
-                        f"Token {_token_tag(token)} rate limited (429), "
+                        f"Token {_token_tag(token)} {'rate limited (429)' if rate_limited(e) else 'auth failed (401)'}, "
                         f"trying next token (attempt {attempt + 1}/{max_token_retries})"
                     )
                     continue
diff --git a/app/services/reverse/media_post.py b/app/services/reverse/media_post.py
index 987e188..9819b2e 100644
--- a/app/services/reverse/media_post.py
+++ b/app/services/reverse/media_post.py
@@ -243,8 +243,9 @@ class MediaPostReverse:
                     if len(content) > 300:
                         content = f"{content[:300]}...(len={len(content)})"
                     logger.error(
-                        "MediaPostReverse: Media post create failed, "
-                        f"status={response.status_code}, body={content or '-'}",
+                        "MediaPostReverse: Media post create failed, status={}, body={}",
+                        response.status_code,
+                        content or '-',
                         extra={"error_type": "UpstreamException"},
                     )
                     raise UpstreamException(
@@ -342,8 +343,9 @@ class MediaPostReverse:
                     if len(content) > 300:
                         content = f"{content[:300]}...(len={len(content)})"
                     logger.error(
-                        "MediaPostReverse: Media post get failed, "
-                        f"status={response.status_code}, body={content or '-'}",
+                        "MediaPostReverse: Media post get failed, status={}, body={}",
+                        response.status_code,
+                        content or '-',
                         extra={"error_type": "UpstreamException"},
                     )
                     raise UpstreamException(
@@ -442,8 +444,9 @@ class MediaPostReverse:
                     if len(content) > 300:
                         content = f"{content[:300]}...(len={len(content)})"
                     logger.error(
-                        "MediaPostReverse: Media post create-link failed, "
-                        f"status={response.status_code}, body={content or '-'}",
+                        "MediaPostReverse: Media post create-link failed, status={}, body={}",
+                        response.status_code,
+                        content or '-',
                         extra={"error_type": "UpstreamException"},
                     )
                     raise UpstreamException(