diff --git a/tools/convert/converter.cpp b/tools/convert/converter.cpp
index a52e6e1555..595fbfa3f1 100644
--- a/tools/convert/converter.cpp
+++ b/tools/convert/converter.cpp
@@ -28,13 +28,14 @@ void rs2::tools::converter::metadata_to_txtfile(const rs2::frame& frm, const std
     file.close();
 }
 
-bool converter_base::frames_map_get_and_set(rs2_stream streamType, frame_number_t frameNumber)
+bool converter_base::frames_map_get_and_set(rs2_stream streamType, int index, frame_number_t frameNumber)
 {
-    if (_framesMap.find(streamType) == _framesMap.end()) {
-        _framesMap.emplace(streamType, std::unordered_set<frame_number_t>());
+    auto stream_with_index = std::pair<rs2_stream, int>(streamType, index);
+    if (_framesMap.find(stream_with_index) == _framesMap.end()) {
+        _framesMap.emplace(stream_with_index, std::unordered_set<frame_number_t>());
     }
 
-    auto& set = _framesMap[streamType];
+    auto& set = _framesMap[stream_with_index];
     bool result = (set.find(frameNumber) != set.end());
 
     if (!result) {
@@ -67,7 +68,7 @@ std::string converter_base::get_statistics()
     for (auto& i : _framesMap) {
         result << '\t'
             << i.second.size() << ' '
-            << (static_cast<rs2_stream>(i.first) != rs2_stream::RS2_STREAM_ANY ? rs2_stream_to_string(static_cast<rs2_stream>(i.first)) : "")
+            << (i.first.first != rs2_stream::RS2_STREAM_ANY ? rs2_stream_to_string(i.first.first) : "")
             << " frame(s) processed"
             << '\n';
     }
diff --git a/tools/convert/converter.hpp b/tools/convert/converter.hpp
index ccea9e5d67..4ebe46a6d8 100644
--- a/tools/convert/converter.hpp
+++ b/tools/convert/converter.hpp
@@ -4,7 +4,7 @@
 #ifndef __RS_CONVERTER_CONVERTER_H
 #define __RS_CONVERTER_CONVERTER_H
 
-#include <unordered_map>
+#include <map>
 #include <unordered_set>
 #include <thread>
 #include <string>
@@ -26,10 +26,10 @@ namespace rs2 {
             protected:
                 std::thread _worker;
                 std::vector<std::thread> _subWorkers;
-                std::unordered_map<int, std::unordered_set<frame_number_t>> _framesMap;
+                std::map<std::pair<rs2_stream, int>, std::unordered_set<frame_number_t>> _framesMap;
 
             protected:
-                bool frames_map_get_and_set(rs2_stream streamType, frame_number_t frameNumber);
+                bool frames_map_get_and_set(rs2_stream streamType, int index, frame_number_t frameNumber);
                 void wait_sub_workers();
 
                 template <typename F> void start_worker(const F& f)
diff --git a/tools/convert/converters/converter-bin.hpp b/tools/convert/converters/converter-bin.hpp
index 69bfba4b4a..2ded3d2d94 100644
--- a/tools/convert/converters/converter-bin.hpp
+++ b/tools/convert/converters/converter-bin.hpp
@@ -79,7 +79,7 @@ namespace rs2 {
                         return;
                     }
 
-                    if (frames_map_get_and_set(depthframe.get_profile().stream_type(), depthframe.get_frame_number())) {
+                    if (frames_map_get_and_set(depthframe.get_profile().stream_type(), depthframe.get_profile().stream_index(), depthframe.get_frame_number())) {
                         return;
                     }
 
diff --git a/tools/convert/converters/converter-csv.cpp b/tools/convert/converters/converter-csv.cpp
index d364f139b3..770b5cdab3 100644
--- a/tools/convert/converters/converter-csv.cpp
+++ b/tools/convert/converters/converter-csv.cpp
@@ -53,7 +53,7 @@ converter_csv::converter_csv(const std::string& filePath, rs2_stream streamType)
 
 void converter_csv::convert_depth(rs2::depth_frame& depthframe)
 {
-    if (frames_map_get_and_set(depthframe.get_profile().stream_type(), depthframe.get_frame_number())) {
+    if (frames_map_get_and_set(depthframe.get_profile().stream_type(), depthframe.get_profile().stream_index(), depthframe.get_frame_number())) {
         return;
     }
 
@@ -146,7 +146,7 @@ void converter_csv::save_motion_pose_data_to_file()
 
 void converter_csv::convert_motion_pose(rs2::frame& f)
 {
-    if (frames_map_get_and_set(f.get_profile().stream_type(), f.get_frame_number())) {
+    if (frames_map_get_and_set(f.get_profile().stream_type(), f.get_profile().stream_index(), f.get_frame_number())) {
         return;
     }
 
diff --git a/tools/convert/converters/converter-ply.hpp b/tools/convert/converters/converter-ply.hpp
index f9c663dd00..f412deaaca 100644
--- a/tools/convert/converters/converter-ply.hpp
+++ b/tools/convert/converters/converter-ply.hpp
@@ -37,7 +37,7 @@ namespace rs2 {
                             auto frameColor = frameset.get_color_frame();
 
                             if (frameDepth && frameColor) {
-                                if (frames_map_get_and_set(rs2_stream::RS2_STREAM_ANY, frameDepth.get_frame_number())) {
+                                if (frames_map_get_and_set(rs2_stream::RS2_STREAM_ANY, frameDepth.get_profile().stream_index(), frameDepth.get_frame_number())) {
                                     return;
                                 }
 
diff --git a/tools/convert/converters/converter-png.hpp b/tools/convert/converters/converter-png.hpp
index fcfd6ce2f8..6db649cb9e 100644
--- a/tools/convert/converters/converter-png.hpp
+++ b/tools/convert/converters/converter-png.hpp
@@ -40,8 +40,7 @@ namespace rs2 {
                         return;
                     }
 
-                    if (frames_map_get_and_set(videoframe.get_profile().stream_type(), 
-                        static_cast<rs2::tools::converter::frame_number_t>(videoframe.get_timestamp()))) {
+                    if (frames_map_get_and_set(videoframe.get_profile().stream_type(), videoframe.get_profile().stream_index(), videoframe.get_frame_number())) {
                         return;
                     }
 
diff --git a/tools/convert/converters/converter-raw.hpp b/tools/convert/converters/converter-raw.hpp
index 5b855a008f..821b8e2f4c 100644
--- a/tools/convert/converters/converter-raw.hpp
+++ b/tools/convert/converters/converter-raw.hpp
@@ -38,7 +38,7 @@ namespace rs2 {
                         return;
                     }
 
-                    if (frames_map_get_and_set(videoframe.get_profile().stream_type(), videoframe.get_frame_number())) {
+                    if (frames_map_get_and_set(videoframe.get_profile().stream_type(), videoframe.get_profile().stream_index(), videoframe.get_frame_number())) {
                         return;
                     }