From 6e3a0172e858b680f67cf9101f1c900b2f7917f2 Mon Sep 17 00:00:00 2001
From: LTW <ltwsamuel@outlook.com>
Date: Tue, 10 Feb 2026 22:23:17 +0800
Subject: [PATCH] fix: segfault when av_get_media_type_string returns NULL

---
 av/stream.py  | 5 ++++-
 av/stream.pyi | 2 +-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/av/stream.py b/av/stream.py
index f4dcb38d7..8674aba87 100644
--- a/av/stream.py
+++ b/av/stream.py
@@ -275,7 +275,10 @@ def type(self):
 
         :type: Literal["audio", "video", "subtitle", "data", "attachment"]
         """
-        return lib.av_get_media_type_string(self.ptr.codecpar.codec_type)
+        media_type = lib.av_get_media_type_string(self.ptr.codecpar.codec_type)
+        if media_type is cython.NULL:
+            return ""
+        return media_type
 
 
 @cython.cclass
diff --git a/av/stream.pyi b/av/stream.pyi
index 3c4e55f6a..32b972f73 100644
--- a/av/stream.pyi
+++ b/av/stream.pyi
@@ -48,7 +48,7 @@ class Stream:
     disposition: Disposition
     frames: int
     language: str | None
-    type: Literal["video", "audio", "data", "subtitle", "attachment"]
+    type: Literal["video", "audio", "data", "subtitle", "attachment", ""]
 
     # From context
     codec_tag: str