Decrease threshold for key frame generation.

webrtc/api/android/jni/androidmediaencoder_jni.cc

 /*
  *  Copyright 2015 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 66 matching lines @@
   __android_log_print(ANDROID_LOG_VERBOSE, TAG_ENCODER, __VA_ARGS__)
 #else
 #define ALOGV(...)
 #endif
 #define ALOGD LOG_TAG(rtc::LS_INFO, TAG_ENCODER)
 #define ALOGW LOG_TAG(rtc::LS_WARNING, TAG_ENCODER)
 #define ALOGE LOG_TAG(rtc::LS_ERROR, TAG_ENCODER)
 
 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
 // Android's MediaCodec SDK API behind the scenes to implement (hopefully)
 // HW-backed video encode.  This C++ class is implemented as a very thin shim,
 // delegating all of the interesting work to org.webrtc.MediaCodecVideoEncoder.
 // MediaCodecVideoEncoder is created, operated, and destroyed on a single
 // thread, currently the libjingle Worker thread.
 class MediaCodecVideoEncoder : public webrtc::VideoEncoder,
                                public rtc::MessageHandler {
@@ skipping 1281 matching lines @@
   return supported_codecs_;
 }
 
 void MediaCodecVideoEncoderFactory::DestroyVideoEncoder(
     webrtc::VideoEncoder* encoder) {
   ALOGD << "Destroy video encoder.";
   delete encoder;
 }
 
 }  // namespace webrtc_jni