fix: Fixing the inability to play MKV video files online and enhancin…

frontend/src/components/files/VideoPlayer.vue

@@ -1,14 +1,8 @@
 <template>
-  <video ref="videoPlayer" class="video-max video-js" controls>
-    <source :src="source" />
-    <track
-      kind="subtitles"
-      v-for="(sub, index) in subtitles"
-      :key="index"
-      :src="sub"
-      :label="subLabel(sub)"
-      :default="index === 0"
-    />
+  <video ref="videoPlayer" class="video-max video-js" controls preload="auto">
+    <source />
+    <track kind="subtitles" v-for="(sub, index) in subtitles" :key="index" :src="sub" :label="subLabel(sub)"
+      :default="index === 0" />
     <p class="vjs-no-js">
       Sorry, your browser doesn't support embedded videos, but don't worry, you
       can <a :href="source">download it</a>
@@ -18,18 +12,18 @@
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted, onBeforeUnmount } from "vue";
+import { ref, onMounted, onBeforeUnmount, nextTick, } from "vue";
 import videojs from "video.js";
 import type Player from "video.js/dist/types/player";
 import "videojs-mobile-ui";
 import "videojs-hotkeys";
-
 import "video.js/dist/video-js.min.css";
 import "videojs-mobile-ui/dist/videojs-mobile-ui.css";
 
 const videoPlayer = ref<HTMLElement | null>(null);
 const player = ref<Player | null>(null);
 
+
 const props = withDefaults(
   defineProps<{
     source: string;
@@ -41,33 +35,14 @@
   }
 );
 
-onMounted(() => {
-  player.value = videojs(
-    videoPlayer.value!,
-    {
-      html5: {
-        // needed for customizable subtitles
-        // TODO: add to user settings
-        nativeTextTracks: false,
-      },
-      plugins: {
-        hotkeys: {
-          volumeStep: 0.1,
-          seekStep: 10,
-          enableModifiersForNumbers: false,
-        },
-      },
-      ...props.options,
-    },
-    // onReady callback
-    async () => {
-      // player.value!.log("onPlayerReady", this);
-    }
-  );
-  // TODO: need to test on mobile
-  // @ts-ignore
-  player.value!.mobileUi();
-});
+const source = ref(props.source)
+const sourceType = ref("")
+
+nextTick(() => {
+  initVideoPlayer()
+})
+
+onMounted(() => { });
 
 onBeforeUnmount(() => {
   if (player.value) {
@@ -76,6 +51,67 @@
   }
 });
 
+const initVideoPlayer = async () => {
+  try {
+    const lang = document.documentElement.lang;
+    const languagePack = await (languageImports[lang] || languageImports.en)?.();
+    videojs.addLanguage('videoPlayerLocal', languagePack.default);
+    sourceType.value = ""
+
+    //
+    sourceType.value = getSourceType(source.value);
+
+    const srcOpt = { sources: { src: props.source, type: sourceType.value } }
+    //Supporting localized language display.
+    const langOpt = { language: "videoPlayerLocal" }
+    // support for playback at different speeds.
+    const playbackRatesOpt = { playbackRates: [0.5, 1, 1.5, 2, 2.5, 3] }
+    let options = getOptions(props.options, langOpt, srcOpt, playbackRatesOpt)
+    player.value = videojs(videoPlayer.value!, options, () => {
+    });
+
+    // TODO: need to test on mobile
+    // @ts-ignore
+    player.value!.mobileUi();
+  } catch (error) {
+    console.error("Error initializing video player:", error);
+  }
+
+}
+
+const getOptions = (...srcOpt: any[]) => {
+  const options = {
+    controlBar: {
+    skipButtons: {
+      forward: 5,
+      backward: 5
+    }
+
+  },
+    html5: {
+      nativeTextTracks: false,
+    },
+    plugins: {
+      hotkeys: {
+        volumeStep: 0.1,
+        seekStep: 10,
+        enableModifiersForNumbers: false,
+      },
+    },
+  };
+
+  return videojs.obj.merge(options, ...srcOpt);
+}
+
+//  Attempting to fix the issue of being unable to play .MKV format video files
+const getSourceType = (source: string) => {
+  const fileExtension = source ? source.split("?")[0].split(".").pop() : "";
+  if (fileExtension?.toLowerCase() === "mkv") {
+    return "video/mp4";
+  }
+  return "";
+};
+
 const subLabel = (subUrl: string) => {
   let url: URL;
   try {
@@ -95,6 +131,36 @@
 
   return label;
 };
+
+interface LanguageImports {
+  [key: string]: () => Promise<any>;
+}
+
+const languageImports: LanguageImports = {
+  'he': () => import('video.js/dist/lang/he.json'),
+  'hu': () => import('video.js/dist/lang/hu.json'),
+  'ar': () => import('video.js/dist/lang/ar.json'),
+  'de': () => import('video.js/dist/lang/de.json'),
+  'el': () => import('video.js/dist/lang/el.json'),
+  'en': () => import('video.js/dist/lang/en.json'),
+  'es': () => import('video.js/dist/lang/es.json'),
+  'fr': () => import('video.js/dist/lang/fr.json'),
+  'it': () => import('video.js/dist/lang/it.json'),
+  'ja': () => import('video.js/dist/lang/ja.json'),
+  'ko': () => import('video.js/dist/lang/ko.json'),
+  'nl-be': () => import('video.js/dist/lang/nl.json'),
+  'pl': () => import('video.js/dist/lang/pl.json'),
+  'pt-br': () => import('video.js/dist/lang/pt-BR.json'),
+  'pt': () => import('video.js/dist/lang/pt-PT.json'),
+  'ro': () => import('video.js/dist/lang/ro.json'),
+  'ru': () => import('video.js/dist/lang/ru.json'),
+  'sk': () => import('video.js/dist/lang/sk.json'),
+  'tr': () => import('video.js/dist/lang/tr.json'),
+  'uk': () => import('video.js/dist/lang/uk.json'),
+  'zh-cn': () => import('video.js/dist/lang/zh-CN.json'),
+  'zh-tw': () => import('video.js/dist/lang/zh-TW.json'),
+};
+
 </script>
 <style scoped>
 .video-max {