From 5a60828ab0b1dd6505d9c963fe2fd6a2d84cf442 Mon Sep 17 00:00:00 2001
From: Fijxu <fijxu@nadeko.net>
Date: Mon, 24 Mar 2025 19:02:01 -0300
Subject: [PATCH 3/9] feat: add resolution limit on DASH streams to save
 bandwidth

---
 config/config.example.toml                  | 1 +
 src/lib/helpers/config.ts                   | 3 +++
 src/routes/invidious_routes/dashManifest.ts | 7 ++++++-
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/config/config.example.toml b/config/config.example.toml
index e173e06..a3c73be 100644
--- a/config/config.example.toml
+++ b/config/config.example.toml
@@ -15,6 +15,7 @@
 # # secret key needs to be 16 characters long or more
 # secret_key = "CHANGE_ME" # env variable: SERVER_SECRET_KEY
 # verify_requests = false
+# max_dash_resolution = 1080
  
 # [cache]
 # enabled = true
diff --git a/src/lib/helpers/config.ts b/src/lib/helpers/config.ts
index 5ff4a2d..1ad0125 100644
--- a/src/lib/helpers/config.ts
+++ b/src/lib/helpers/config.ts
@@ -9,6 +9,9 @@ const ConfigSchema = z.object({
             Deno.env.get("SERVER_SECRET_KEY") || "",
         ),
         verify_requests: z.boolean().default(false),
+        max_dash_resolution: z.number().default(
+            Number(Deno.env.get("SERVER_MAX_DASH_RESOLUTION")),
+        ),
     }).strict().default({}),
     cache: z.object({
         enabled: z.boolean().default(true),
diff --git a/src/routes/invidious_routes/dashManifest.ts b/src/routes/invidious_routes/dashManifest.ts
index 46756cd..68ae21d 100644
--- a/src/routes/invidious_routes/dashManifest.ts
+++ b/src/routes/invidious_routes/dashManifest.ts
@@ -61,7 +61,12 @@ dashManifest.get("/:videoId", async (c) => {
                         ).includes("av01")
                     ) {
                         if (i.mime_type.includes("av01")) {
-                            return true;
+                            // @ts-ignore 'i.height' is possibly 'undefined'.
+                            if (i.height > config.server.max_dash_resolution) {
+                                return false;
+                            } else {
+                                return true;
+                            }
                         } else {
                             return false;
                         }
-- 
2.49.0