fix: iOS only supports vtt captions

apps/expo/app.config.ts

@@ -46,7 +46,7 @@ const defineConfig = (): ExpoConfig => ({
     [
       "expo-screen-orientation",
       {
-        initialOrientation: "DEFAULT",
+        initialOrientation: "PORTRAIT_UP",
       },
     ],
     [

apps/expo/src/app/videoPlayer.tsx

@@ -4,7 +4,7 @@ import type {
   TextTracks,
 } from "react-native-video";
 import React, { useEffect, useState } from "react";
-import { ActivityIndicator, View } from "react-native";
+import { ActivityIndicator, Platform, View } from "react-native";
 import Video, { TextTracksType } from "react-native-video";
 import { useLocalSearchParams, useRouter } from "expo-router";
 import * as ScreenOrientation from "expo-screen-orientation";
@@ -173,10 +173,16 @@ const captionTypeToTextTracksType = {
 };
 
 function convertCaptionsToTextTracks(captions: Caption[]): TextTracks {
-  return captions.map((caption) => ({
+	return captions.map((caption) => {
-    title: caption.language,
+		if (Platform.OS === "ios" && caption.type !== "vtt") {
-    language: caption.language as ISO639_1,
+			return null;
-    type: captionTypeToTextTracksType[caption.type] || TextTracksType.VTT,
+		}
-    uri: caption.url,
+
-  }));
+		return {
+			title: caption.language,
+			language: caption.language as ISO639_1,
+			type: captionTypeToTextTracksType[caption.type],
+			uri: caption.url,
+		};
+	}).filter(Boolean) as TextTracks;
 }