diff --git a/api/video_codecs/video_encoder.cc b/api/video_codecs/video_encoder.cc
index b85b9328cf..e4b44aedb3 100644
--- a/api/video_codecs/video_encoder.cc
+++ b/api/video_codecs/video_encoder.cc
@@ -329,9 +329,4 @@ void VideoEncoder::OnRttUpdate(int64_t rtt_ms) {}
 void VideoEncoder::OnLossNotification(
     const LossNotification& loss_notification) {}
 
-// TODO(webrtc:9722): Remove and make pure virtual.
-VideoEncoder::EncoderInfo VideoEncoder::GetEncoderInfo() const {
-  return EncoderInfo();
-}
-
 }  // namespace webrtc
diff --git a/api/video_codecs/video_encoder.h b/api/video_codecs/video_encoder.h
index 36dc5225c6..9d54256b6b 100644
--- a/api/video_codecs/video_encoder.h
+++ b/api/video_codecs/video_encoder.h
@@ -420,7 +420,7 @@ class RTC_EXPORT VideoEncoder {
   // The output of this method may change during runtime. For instance if a
   // hardware encoder fails, it may fall back to doing software encoding using
   // an implementation with different characteristics.
-  virtual EncoderInfo GetEncoderInfo() const;
+  virtual EncoderInfo GetEncoderInfo() const = 0;
 };
 }  // namespace webrtc
 #endif  // API_VIDEO_CODECS_VIDEO_ENCODER_H_
diff --git a/test/configurable_frame_size_encoder.cc b/test/configurable_frame_size_encoder.cc
index e3965ef770..44a00bcacc 100644
--- a/test/configurable_frame_size_encoder.cc
+++ b/test/configurable_frame_size_encoder.cc
@@ -77,6 +77,10 @@ int32_t ConfigurableFrameSizeEncoder::Release() {
 void ConfigurableFrameSizeEncoder::SetRates(
     const RateControlParameters& parameters) {}
 
+VideoEncoder::EncoderInfo ConfigurableFrameSizeEncoder::GetEncoderInfo() const {
+  return EncoderInfo();
+}
+
 int32_t ConfigurableFrameSizeEncoder::SetFrameSize(size_t size) {
   current_frame_size_ = size;
   return WEBRTC_VIDEO_CODEC_OK;
diff --git a/test/configurable_frame_size_encoder.h b/test/configurable_frame_size_encoder.h
index 8dd5157b5b..747fc09d4b 100644
--- a/test/configurable_frame_size_encoder.h
+++ b/test/configurable_frame_size_encoder.h
@@ -49,6 +49,8 @@ class ConfigurableFrameSizeEncoder : public VideoEncoder {
 
   void SetRates(const RateControlParameters& parameters) override;
 
+  EncoderInfo GetEncoderInfo() const override;
+
   int32_t SetFrameSize(size_t size);
 
   void SetCodecType(VideoCodecType codec_type_);
diff --git a/video/video_send_stream_tests.cc b/video/video_send_stream_tests.cc
index 1859fe8cec..4e1fefef10 100644
--- a/video/video_send_stream_tests.cc
+++ b/video/video_send_stream_tests.cc
@@ -2280,6 +2280,8 @@ TEST_F(VideoSendStreamTest, EncoderIsProperlyInitializedAndDestroyed) {
       EXPECT_TRUE(IsReadyForEncode());
     }
 
+    EncoderInfo GetEncoderInfo() const override { return EncoderInfo(); }
+
     void OnVideoStreamsCreated(VideoSendStream* send_stream,
                                const std::vector<VideoReceiveStreamInterface*>&
                                    receive_streams) override {