Read frame id from metadata name

openVulkanoCpp/AR/Provider/Playback/ArPlaybackReader.hpp

@@ -42,6 +42,12 @@ namespace openVulkanoCpp::AR::Playback
 			m_archiveConfidence.Open(recDir, ".*conf(idence)?" + extensions);
 		}
 
+		int GetNextFrameId()
+		{
+			std::string name = m_archiveMetadata.GetNextDescription().path;
+			return std::stoi(name.substr(0, name.length() - 5));
+		}
+
 		Array<char> ReadMetadata()
 		{
 			return std::move(m_archiveMetadata.GetNextFile()->second);