transcoding: default to use real transcoder in the service

bug: 154734285

test: unit testing
Change-Id: Ib60d5c663abffbcf072be12e20cd836d51d16eb8
diff --git a/services/mediatranscoding/MediaTranscodingService.cpp b/services/mediatranscoding/MediaTranscodingService.cpp
index 2b97c2e..b0ea0db 100644
--- a/services/mediatranscoding/MediaTranscodingService.cpp
+++ b/services/mediatranscoding/MediaTranscodingService.cpp
@@ -84,7 +84,7 @@
 //static
 void MediaTranscodingService::instantiate() {
     std::shared_ptr<TranscoderInterface> transcoder;
-    if (property_get_bool("debug.transcoding.simulated_transcoder", true)) {
+    if (property_get_bool("debug.transcoding.simulated_transcoder", false)) {
         transcoder = std::make_shared<SimulatedTranscoder>();
     } else {
         transcoder = std::make_shared<TranscoderWrapper>();