diff --git a/dom/media/VideoUtils.cpp b/dom/media/VideoUtils.cpp
index 9074a0204b..f8e7f154a7 100644
--- a/dom/media/VideoUtils.cpp
+++ b/dom/media/VideoUtils.cpp
@@ -642,15 +642,25 @@ IsAACCodecString(const nsAString& aCodec)
 bool
 IsVP8CodecString(const nsAString& aCodec)
 {
+  uint8_t profile = 0;
+  uint8_t level = 0;
+  uint8_t bitDepth = 0;
   return aCodec.EqualsLiteral("vp8") ||
-         aCodec.EqualsLiteral("vp8.0");
+         aCodec.EqualsLiteral("vp8.0") ||
+         (StartsWith(NS_ConvertUTF16toUTF8(aCodec), "vp08") &&
+          ExtractVPXCodecDetails(aCodec, profile, level, bitDepth));
 }
 
 bool
 IsVP9CodecString(const nsAString& aCodec)
 {
+  uint8_t profile = 0;
+  uint8_t level = 0;
+  uint8_t bitDepth = 0;
   return aCodec.EqualsLiteral("vp9") ||
-         aCodec.EqualsLiteral("vp9.0");
+         aCodec.EqualsLiteral("vp9.0") ||
+         (StartsWith(NS_ConvertUTF16toUTF8(aCodec), "vp09") &&
+          ExtractVPXCodecDetails(aCodec, profile, level, bitDepth));
 }
 
 #ifdef MOZ_AV1