try out ogv codec loader

src/codec.js

@@ -0,0 +1,47 @@
+import { OGVLoader } from "ogv";
+
+// example: https://github.com/rgov/js-theora-decoder/blob/main/index.html
+// dev: copy decoder files from node/ogv/dist/* to project dir
+// dist: .... to dist
+
+export function loadVp9() {
+    OGVLoader.loadClass(
+        "OGVDecoderVideoVP9W",
+        (videoCodecClass) => {
+            videoCodecClass().then((decoder) => {
+                decoder.init(() => {
+                    onVp9Ready(decoder)
+                })
+            })
+        },
+        { worker: true }
+    );
+}
+
+export function loadOpus() {
+    OGVLoader.loadClass(
+        "OGVDecoderAudioOpusW",
+        (audioCodecClass) => {
+            audioCodecClass().then((decoder) => {
+                decoder.init(() => {
+                    onOpusReady(decoder)
+                })
+            })
+        },
+        { worker: true }
+    );
+}
+
+async function onVp9Ready(decoder) {
+    console.log("Vp9 decoder ready");
+
+    /*
+    decoder.processFrame(buffer, () => {
+        player.drawFrame(decoder.frameBuffer)
+    })
+    */
+}
+
+async function onOpusReady(decoder) {
+    console.log("Opus decoder ready");
+}