Fixed an problem where deep copy did not work when passing decoded fr…

…ame to the filters.

src/projects/transcoder/transcoder_context.h

@@ -185,13 +185,24 @@ class MediaFrame
 		}
 	}
 
-	// This function should only be called before filtering (_track_id 0, 1)
-	std::shared_ptr<MediaFrame> CloneFrame()
+	// This function should only be called before filtering 
+	std::shared_ptr<MediaFrame> CloneFrame(bool deep_copy = false)
 	{
 		auto frame = std::make_shared<MediaFrame>();
 
-		if(_priv_data != nullptr){
-			frame->SetPrivData(::av_frame_clone(_priv_data));
+		if(_priv_data != nullptr)
+		{
+			// Create a new frame that references the same data as src
+			auto clone_priv_data = ::av_frame_clone(_priv_data);
+			if (clone_priv_data != nullptr)
+			{
+				if (deep_copy == true)
+				{
+					::av_frame_make_writable(clone_priv_data);
+				}
+
+				frame->SetPrivData(clone_priv_data);
+			}
 		}
 
 		frame->SetMediaType(_media_type);

src/projects/transcoder/transcoder_stream.cpp

@@ -1490,7 +1490,7 @@ void TranscoderStream::SpreadToFilters(int32_t decoder_id, std::shared_ptr<Media
 
 	for (auto &filter_id : filter_ids)
 	{
-		auto frame_clone = frame->CloneFrame();
+		auto frame_clone = frame->CloneFrame(true);
 		if (frame_clone == nullptr)
 		{
 			logte("%s Failed to clone frame", _log_prefix.CStr());