diff --git a/api/rtpparameters.cc b/api/rtpparameters.cc
index 160a0690e0..79fd3a93f9 100644
--- a/api/rtpparameters.cc
+++ b/api/rtpparameters.cc
@@ -17,6 +17,8 @@
 
 namespace webrtc {
 
+const double kDefaultBitratePriority = 1.0;
+
 RtcpFeedback::RtcpFeedback() {}
 RtcpFeedback::RtcpFeedback(RtcpFeedbackType type) : type(type) {}
 RtcpFeedback::RtcpFeedback(RtcpFeedbackType type,
diff --git a/api/rtpparameters.h b/api/rtpparameters.h
index e6bd25e3ae..221f5b6da1 100644
--- a/api/rtpparameters.h
+++ b/api/rtpparameters.h
@@ -72,6 +72,7 @@ enum class DegradationPreference {
   BALANCED,
 };
 
+extern const double kDefaultBitratePriority;
 enum class PriorityType { VERY_LOW, LOW, MEDIUM, HIGH };
 
 struct RtcpFeedback {
diff --git a/call/video_config.cc b/call/video_config.cc
index 7cf26406a1..982c013e46 100644
--- a/call/video_config.cc
+++ b/call/video_config.cc
@@ -54,6 +54,7 @@ VideoEncoderConfig::VideoEncoderConfig()
       encoder_specific_settings(nullptr),
       min_transmit_bitrate_bps(0),
       max_bitrate_bps(0),
+      bitrate_priority(1.0),
       number_of_streams(0) {}
 
 VideoEncoderConfig::VideoEncoderConfig(VideoEncoderConfig&&) = default;
diff --git a/call/video_config.h b/call/video_config.h
index 52a3e9ad05..2276e785dd 100644
--- a/call/video_config.h
+++ b/call/video_config.h
@@ -35,6 +35,7 @@ struct VideoStream {
   int min_bitrate_bps;
   int target_bitrate_bps;
   int max_bitrate_bps;
+  rtc::Optional<double> bitrate_priority;
 
   int max_qp;
 
@@ -142,6 +143,8 @@ class VideoEncoderConfig {
   // unless the estimated bandwidth indicates that the link can handle it.
   int min_transmit_bitrate_bps;
   int max_bitrate_bps;
+  // The bitrate priority used for all VideoStreams.
+  double bitrate_priority;
 
   // Max number of encoded VideoStreams to produce.
   size_t number_of_streams;