const double DecoderStack::DecodeMargin = 1.0;
const double DecoderStack::DecodeThreshold = 0.2;
-const int64_t DecoderStack::DecodeChunkLength = 4096;
+const int64_t DecoderStack::DecodeChunkLength = 10 * 1024 * 1024;
const unsigned int DecoderStack::DecodeNotifyPeriod = 1024;
mutex DecoderStack::global_srd_mutex_;