优化

web/src/pages/directPlayError.ts

@@ -0,0 +1,24 @@
+export type DirectPlayErrorAction = 'ignore' | 'retry' | 'fallback'
+
+const MEDIA_ERR_ABORTED = 1
+const HAVE_CURRENT_DATA = 2
+
+/**
+ * Chromium 常把被中断的直连（换 src、插入 track、302 未完成就 seek）
+ * 报成 error。真正不兼容应 fallback；瞬时中断应忽略或静默重试一次。
+ */
+export function classifyDirectPlayError(input: {
+  errorCode: number | undefined | null
+  readyState: number
+  elementSrc: string
+  expectedSrc: string
+  alreadyRetried: boolean
+}): DirectPlayErrorAction {
+  const code = input.errorCode ?? 0
+  if (code === MEDIA_ERR_ABORTED) return 'ignore'
+  if (input.readyState >= HAVE_CURRENT_DATA) return 'ignore'
+  if (!input.elementSrc) return 'ignore'
+  if (input.expectedSrc && input.elementSrc !== input.expectedSrc) return 'ignore'
+  if (!input.alreadyRetried) return 'retry'
+  return 'fallback'
+}