diff --git a/web/src/routes/remux/+page.svelte b/web/src/routes/remux/+page.svelte
index fd223847..6f9d075d 100644
--- a/web/src/routes/remux/+page.svelte
+++ b/web/src/routes/remux/+page.svelte
@@ -2,13 +2,12 @@
     import mime from "mime";
     import LibAVWrapper from "$lib/libav/remux";
 
-    import { onDestroy } from "svelte";
+    import { onDestroy, onMount } from "svelte";
     import { beforeNavigate, goto } from "$app/navigation";
 
     import { t } from "$lib/i18n/translations";
     import { createDialog } from "$lib/dialogs";
     import { downloadFile } from "$lib/download";
-    import { browser } from "$app/environment";
 
     import Skeleton from "$components/misc/Skeleton.svelte";
     import DropReceiver from "$components/misc/DropReceiver.svelte";
@@ -53,13 +52,9 @@
         }
     });
 
-    if (browser) {
-        ff.init();
-    }
-
     const render = async () => {
         if (!file || processing) return;
-        await ff.init();
+        ff.init();
 
         let dialogOpened;
         try {
@@ -199,6 +194,7 @@
         render();
     }
 
+    onMount(() => ff.init());
     onDestroy(() => ff.terminate());
 </script>
 
diff --git a/web/src/routes/shrink/+page.svelte b/web/src/routes/shrink/+page.svelte
index 5ed40d8a..67e4de2e 100644
--- a/web/src/routes/shrink/+page.svelte
+++ b/web/src/routes/shrink/+page.svelte
@@ -7,16 +7,12 @@
     import DropReceiver from "$components/misc/DropReceiver.svelte";
     import FileReceiver from "$components/misc/FileReceiver.svelte";
     import type { StreamInfo } from "$lib/types/libav";
-    import { onDestroy } from "svelte";
+    import { onDestroy, onMount } from "svelte";
 
     let file: File | undefined;
     let streamInfo: StreamInfo[] | undefined;
 
     const ff = new LibAVWrapper();
-    if (browser) {
-        ff.init();
-    }
-
     const render = async () => {
         if (!file) return;
         await ff.init();
@@ -58,6 +54,7 @@
         pseudolink.click();
     };
 
+    onMount(() => ff.init());
     onDestroy(async () => {
         if (browser) {
             await ff.cleanup();