diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 4aef65ae..da1ccaf2 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -103,6 +103,9 @@ importers:
       '@fontsource/redaction-10':
         specifier: ^5.0.2
         version: 5.0.2
+      '@imput/libav.js-encode-cli':
+        specifier: 6.5.7
+        version: 6.5.7
       '@imput/libav.js-remux-cli':
         specifier: ^6.5.7
         version: 6.5.7
@@ -557,6 +560,9 @@ packages:
     resolution: {integrity: sha512-c7hNEllBlenFTHBky65mhq8WD2kbN9Q6gk0bTk8lSBvc554jpXSkST1iePudpt7+A/AQvuHs9EMqjHDXMY1lrA==}
     engines: {node: '>=18.18'}
 
+  '@imput/libav.js-encode-cli@6.5.7':
+    resolution: {integrity: sha512-DbMBSibot7I8fASVmNVTIp0/WQrHUUV2jOCkjWBazvJQKr2hG288uFmvxUu+F2d3AFafRGA9xYtjsx8M+RULwQ==}
+
   '@imput/libav.js-remux-cli@6.5.7':
     resolution: {integrity: sha512-41ld+R5aEwllKdbiszOoCf+K614/8bnuheTZnqjgZESwDtX07xu9O8GO0m/Cpsm7O2CyqPZa1qzDx6BZVO15DQ==}
 
@@ -2417,6 +2423,8 @@ snapshots:
 
   '@humanwhocodes/retry@0.4.1': {}
 
+  '@imput/libav.js-encode-cli@6.5.7': {}
+
   '@imput/libav.js-remux-cli@6.5.7': {}
 
   '@imput/psl@2.0.4':
diff --git a/web/package.json b/web/package.json
index eb6a6c1f..49683f02 100644
--- a/web/package.json
+++ b/web/package.json
@@ -28,6 +28,7 @@
         "@fontsource-variable/noto-sans-mono": "^5.0.20",
         "@fontsource/ibm-plex-mono": "^5.0.13",
         "@fontsource/redaction-10": "^5.0.2",
+        "@imput/libav.js-encode-cli": "6.5.7",
         "@imput/libav.js-remux-cli": "^6.5.7",
         "@imput/version-info": "workspace:^",
         "@sveltejs/adapter-static": "^3.0.6",
diff --git a/web/src/lib/libav.ts b/web/src/lib/libav.ts
index 37e61276..7a58c321 100644
--- a/web/src/lib/libav.ts
+++ b/web/src/lib/libav.ts
@@ -1,5 +1,6 @@
 import { OPFSStorage } from "$lib/storage";
 import LibAV, { type LibAV as LibAVInstance } from "@imput/libav.js-remux-cli";
+import EncodeLibAV from "@imput/libav.js-encode-cli";
 
 import type { FfprobeData } from "fluent-ffmpeg";
 import type { FFmpegProgressCallback, FFmpegProgressEvent, FFmpegProgressStatus, RenderParams } from "$lib/types/libav";
@@ -16,13 +17,22 @@ export default class LibAVWrapper {
     }
 
     init(options?: LibAV.LibAVOpts) {
-        if (!options) options = {
-            yesthreads: true,
+        const variant = options?.variant || 'remux';
+        let constructor: typeof LibAV.LibAV;
+
+        if (variant === 'remux') {
+            constructor = LibAV.LibAV;
+        } else if (variant === 'encode') {
+            constructor = EncodeLibAV.LibAV;
+        } else {
+            throw "invalid variant";
         }
 
         if (this.concurrency && !this.libav) {
-            this.libav = LibAV.LibAV({
+            this.libav = constructor({
                 ...options,
+                variant: undefined,
+                yesthreads: true,
                 base: '/_libav'
             });
         }