iOS 第三方浏览器（Chrome/Firefox/Edge/Opera）改走 TS 兼容流：能力声明隐藏原生 HLS，服务端规划 legacy TS 通道，绕开 fMP4 黑屏问题

internal/webui/player-capabilities.js

@@ -25,7 +25,10 @@
       const supported = type => playable(type) || mse(type);
       const videoCodecs = {h264: 'avc1.42E01E', hevc: 'hvc1.1.6.L120.B0', av1: 'av01.0.08M.08', vp9: 'vp09.00.10.08'};
       const audioCodecs = {aac: 'mp4a.40.2', mp3: 'mp4a.69', ac3: 'ac-3', eac3: 'ec-3', opus: 'opus'};
-      return {mp4: playable('video/mp4'), nativeHls: native(), hlsjs: Boolean(environment.Hls?.isSupported()),
+      // iOS 上的第三方浏览器（Chrome/Firefox/Edge/Opera）自带的媒体栈对 fMP4 HLS 兼容性差，
+      // 会黑屏缓冲；让服务端按无 HLS 通道规划，走 legacy 的 TS 实时转码（hls/open）。
+      const thirdPartyIOS = touchApple && /CriOS|FxiOS|EdgiOS|OPT\//.test(agent.userAgent || '');
+      return {mp4: playable('video/mp4'), nativeHls: native() && !thirdPartyIOS, hlsjs: Boolean(environment.Hls?.isSupported()),
         video: Object.keys(videoCodecs).filter(key => supported('video/mp4; codecs="' + videoCodecs[key] + '"')),
         audio: Object.keys(audioCodecs).filter(key => supported('audio/mp4; codecs="' + audioCodecs[key] + '"'))};
     }

internal/webui/player-capabilities.test.cjs

@@ -33,3 +33,17 @@ test('remux requires compatible H.264 profiles and never replaces iOS HLS', () =
   limited.MediaSource.isTypeSupported = () => {throw new Error('probe unavailable');};
   assert.equal(capabilities(limited, native, {}).remux(), false);
 });
+
+test('third-party iOS browsers hide native HLS so the server plans the TS path', () => {
+  for (const ua of ['iPhone CriOS/154.0.8037.41 Mobile/15E148 Safari/604.1',
+      'iPhone FxiOS/130.0 Mobile/15E148 Safari/605.1.15',
+      'iPhone EdgiOS/130.0.1 Mobile/15E148 Safari/605.1.15']) {
+    const view = capabilities(mse(true), native, {userAgent: ua});
+    assert.equal(view.describe().nativeHls, false);
+    assert.equal(view.choose(type), 'hls');
+  }
+  const safari = capabilities(mse(true), native, {userAgent: 'iPhone Version/27.0 Mobile/15E148 Safari/604.1'});
+  assert.equal(safari.describe().nativeHls, true);
+  const opera = capabilities(mse(true), native, {userAgent: 'iPhone OPT/2.4.0 Mobile/15E148 Safari/605.1.15'});
+  assert.equal(opera.describe().nativeHls, false);
+});