Decrease threshold for key frame generation.

webrtc/api/android/jni/androidmediaencoder_jni.cc

Index: webrtc/api/android/jni/androidmediaencoder_jni.cc
diff --git a/webrtc/api/android/jni/androidmediaencoder_jni.cc b/webrtc/api/android/jni/androidmediaencoder_jni.cc
index ef3d4815badaaf4d2390fa82d3a6fb4559364874..83c03b229aff2c656addd6a619e4d6c08cbad7ad 100644
--- a/webrtc/api/android/jni/androidmediaencoder_jni.cc
+++ b/webrtc/api/android/jni/androidmediaencoder_jni.cc
@@ -84,8 +84,8 @@ namespace webrtc_jni {
 
 namespace {
 // Maximum time limit between incoming frames before requesting a key frame.
-const size_t kFrameDiffThresholdMs = 1100;
-const int kMinKeyFrameInterval = 2;
+const size_t kFrameDiffThresholdMs = 350;
+const int kMinKeyFrameInterval = 6;
 }  // namespace
 
 // MediaCodecVideoEncoder is a webrtc::VideoEncoder implementation that uses