diff --git a/src/extractor/Extractor.ts b/src/extractor/Extractor.ts
index e87fd1e..d558bc1 100644
--- a/src/extractor/Extractor.ts
+++ b/src/extractor/Extractor.ts
@@ -8,6 +8,8 @@ export abstract class Extractor {
 
   public readonly ttl: number = 900000; // 15m
 
+  public readonly viaMediaFlowProxy: boolean = false;
+
   public abstract supports(ctx: Context, url: URL): boolean;
 
   public normalize(url: URL): URL {
diff --git a/src/extractor/Mixdrop.ts b/src/extractor/Mixdrop.ts
index af9cb58..6179a97 100644
--- a/src/extractor/Mixdrop.ts
+++ b/src/extractor/Mixdrop.ts
@@ -12,6 +12,8 @@ export class Mixdrop extends Extractor {
 
   public override readonly ttl = 0;
 
+  public override viaMediaFlowProxy = true;
+
   private readonly fetcher: Fetcher;
 
   public constructor(fetcher: Fetcher) {
diff --git a/src/extractor/Uqload.ts b/src/extractor/Uqload.ts
index 8e7a7ae..f93a18f 100644
--- a/src/extractor/Uqload.ts
+++ b/src/extractor/Uqload.ts
@@ -10,6 +10,8 @@ export class Uqload extends Extractor {
 
   public override readonly ttl = 0;
 
+  public override viaMediaFlowProxy = true;
+
   private readonly fetcher: Fetcher;
 
   public constructor(fetcher: Fetcher) {
diff --git a/src/extractor/VixSrc.ts b/src/extractor/VixSrc.ts
index b7668c9..7f67b15 100644
--- a/src/extractor/VixSrc.ts
+++ b/src/extractor/VixSrc.ts
@@ -16,6 +16,8 @@ export class VixSrc extends Extractor {
 
   public override readonly ttl = 0;
 
+  public override viaMediaFlowProxy = true;
+
   private readonly fetcher: Fetcher;
 
   public constructor(fetcher: Fetcher) {