diff --git a/web/i18n/en/error.json b/web/i18n/en/error.json
index 39282677..6a730052 100644
--- a/web/i18n/en/error.json
+++ b/web/i18n/en/error.json
@@ -4,6 +4,8 @@
     "import.unknown": "couldn't load data from the file. it may be corrupted or of wrong format. here's the error i got:\n\n{{ value }}",
 
     "remux.corrupted": "couldn't read the metadata from this file, it may be corrupted.",
+    "remux.out_of_resources": "cobalt ran out of resources and can't continue with on-device processing. this is related to limitations on your browser's side. try refreshing or reopening the app and trying again. some devices can only process tiny files.",
+
     "tunnel.probe": "couldn't verify whether you can download this file. try again in a few seconds!",
 
     "api.auth.jwt.missing": "couldn't confirm whether you're not a robot because the processing server didn't receive the human access token. try again in a few seconds or reload the page!",
diff --git a/web/src/routes/remux/+page.svelte b/web/src/routes/remux/+page.svelte
index dd505060..dda32289 100644
--- a/web/src/routes/remux/+page.svelte
+++ b/web/src/routes/remux/+page.svelte
@@ -1,29 +1,35 @@
 <script lang="ts">
+    import mime from "mime";
     import LibAVWrapper from "$lib/libav";
+    import { beforeNavigate } from '$app/navigation';
+
     import { openURL } from "$lib/download";
     import { t } from "$lib/i18n/translations";
+    import { createDialog } from "$lib/dialogs";
 
+    import Skeleton from "$components/misc/Skeleton.svelte";
     import DropReceiver from "$components/misc/DropReceiver.svelte";
     import FileReceiver from "$components/misc/FileReceiver.svelte";
-    import { createDialog } from "$lib/dialogs";
-    import mime from "mime";
 
     let draggedOver = false;
     let file: File | Blob | undefined;
 
     let totalDuration: number | undefined;
     let processedDuration: number | undefined;
+
     let speed: number | undefined;
-    let progress = '';
+    let progress: string | undefined;
 
     $: {
         if (totalDuration && processedDuration) {
             const percentage = Math.max(0, Math.min(100, (processedDuration / totalDuration) * 100)).toFixed(2);
-            progress = `${percentage}%, ${speed}x`;
+            progress = percentage;
         } else if (processing) {
-            progress = 'getting video metadata';
+            progress = undefined;
+            speed = undefined;
         } else {
-            progress = '';
+            progress = undefined;
+            speed = undefined;
         }
     }
 
@@ -44,25 +50,51 @@
     const render = async () => {
         if (!file || processing) return;
         await ff.init();
+
+        let dialogOpened;
         try {
-            progress = '';
+            progress = undefined;
+            speed = undefined;
             processing = true;
 
-            const file_info = await ff.probe(file);
+            const file_info = await ff.probe(file).catch(e => {
+                if (e?.message?.toLowerCase().includes("out of memory")) {
+                    console.error("uh oh! out of memory");
+                    console.error(e);
+
+                    dialogOpened = true;
+                    return createDialog({
+                        id: "remux-error",
+                        type: "small",
+                        meowbalt: "error",
+                        bodyText: $t("error.remux.out_of_resources"),
+                        buttons: [
+                            {
+                                text: $t("button.gotit"),
+                                main: true,
+                                action: () => {},
+                            },
+                        ],
+                    });
+                }
+            });
+
             if (!file_info?.format) {
-                return createDialog({
-                    id: "remux-error",
-                    type: "small",
-                    meowbalt: "error",
-                    bodyText: $t("error.remux.corrupted"),
-                    buttons: [
-                        {
-                            text: $t("button.gotit"),
-                            main: true,
-                            action: () => {},
-                        },
-                    ],
-                });
+                if (!dialogOpened)
+                    return createDialog({
+                        id: "remux-error",
+                        type: "small",
+                        meowbalt: "error",
+                        bodyText: $t("error.remux.corrupted"),
+                        buttons: [
+                            {
+                                text: $t("button.gotit"),
+                                main: true,
+                                action: () => {},
+                            },
+                        ],
+                    });
+                return;
             }
 
             totalDuration = Number(file_info.format.duration);
@@ -76,6 +108,22 @@
             const render = await ff.render({
                 blob: file,
                 args: ['-c', 'copy', '-map', '0']
+            }).catch(e => {
+                console.error("uh-oh! render error")
+                console.error(e)
+                return createDialog({
+                    id: "remux-error",
+                    type: "small",
+                    meowbalt: "error",
+                    bodyText: $t("error.remux.out_of_resources"),
+                    buttons: [
+                        {
+                            text: $t("button.gotit"),
+                            main: true,
+                            action: () => {},
+                        },
+                    ],
+                });
             });
 
             if (render) {
@@ -87,9 +135,28 @@
         } finally {
             processing = false;
             file = undefined;
+            progress = undefined;
+            speed = undefined;
         }
     };
 
+    const beforeUnloadHandler = (event: BeforeUnloadEvent) => {
+        event.preventDefault();
+    };
+
+    beforeNavigate((event) => {
+        if (processing) {
+            event.cancel();
+            //TODO: show a popup with an option to kill ongoing processing
+        }
+    })
+
+    $: if (processing) {
+        window.addEventListener("beforeunload", beforeUnloadHandler);
+    } else {
+        window.removeEventListener("beforeunload", beforeUnloadHandler);
+    }
+
     $: if (file) {
         render();
     }
@@ -122,7 +189,16 @@
 
     <div id="remux-processing" class:processing>
         {#if processing}
-            processing{progress ? ` (${(progress)})` : ''}...
+            {#if progress && speed}
+                <div class="progress-bar">
+                    <Skeleton width="{progress}%" height="20px" class="elevated" />
+                </div>
+                <div class="progress-text">
+                    processing ({progress}%, {speed}x)...
+                </div>
+            {:else}
+                processing...
+            {/if}
         {:else}
             done!
         {/if}
@@ -151,12 +227,20 @@
     #remux-processing {
         position: absolute;
         display: flex;
+        flex-direction: column;
         opacity: 0;
         transform: scale(0.9);
         transition: transform 0.2s, opacity 0.2s;
         pointer-events: none;
     }
 
+    .progress-bar {
+        height: 20px;
+        width: 400px;
+        border-radius: 6px;
+        background: var(--button);
+    }
+
     #remux-processing.processing {
         opacity: 1;
         transform: none;