diff --git a/include/gui/Entry.hpp b/include/gui/Entry.hpp
index b8ff37a..449a87c 100644
--- a/include/gui/Entry.hpp
+++ b/include/gui/Entry.hpp
@@ -26,6 +26,8 @@ namespace gsr {
         // Return false to specify that the string should not be accepted. This reverts the string back to its previous value.
         // The input can be changed by changing the input parameter and returning true.
         EntryValidateHandler validate_handler;
+
+        std::function<void(const std::string &text)> on_changed;
     private:
         mgl::Text text;
         float max_width;
diff --git a/include/gui/Label.hpp b/include/gui/Label.hpp
index 3cb91de..a702497 100644
--- a/include/gui/Label.hpp
+++ b/include/gui/Label.hpp
@@ -17,6 +17,8 @@ namespace gsr {
         void draw(mgl::Window &window, mgl::vec2f offset) override;
 
         mgl::vec2f get_size() override;
+
+        void set_text(std::string str);
     private:
         mgl::Text text;
     };
diff --git a/include/gui/SettingsPage.hpp b/include/gui/SettingsPage.hpp
index a0bc518..467463f 100644
--- a/include/gui/SettingsPage.hpp
+++ b/include/gui/SettingsPage.hpp
@@ -14,6 +14,7 @@ namespace gsr {
     class GsrPage;
     class PageStack;
     class ScrollablePage;
+    class Label;
 
     class SettingsPage : public StaticPage {
     public:
@@ -83,6 +84,8 @@ namespace gsr {
         std::unique_ptr<List> create_replay_time();
         std::unique_ptr<CheckBox> create_start_replay_on_startup();
         std::unique_ptr<CheckBox> create_save_replay_in_game_folder();
+        std::unique_ptr<Label> create_estimated_file_size();
+        void update_estimated_file_size();
         std::unique_ptr<CheckBox> create_save_recording_in_game_folder();
         void add_replay_widgets();
         void add_record_widgets();
@@ -147,6 +150,7 @@ namespace gsr {
         List *container_list_ptr = nullptr;
         CheckBox *start_replay_automatically_ptr = nullptr;
         CheckBox *save_replay_in_game_folder_ptr = nullptr;
+        Label *estimated_file_size_ptr = nullptr;
         CheckBox *show_replay_started_notification_checkbox_ptr = nullptr;
         CheckBox *show_replay_stopped_notification_checkbox_ptr = nullptr;
         CheckBox *show_replay_saved_notification_checkbox_ptr = nullptr;
diff --git a/src/gui/Entry.cpp b/src/gui/Entry.cpp
index 4f318ec..9a3fccf 100644
--- a/src/gui/Entry.cpp
+++ b/src/gui/Entry.cpp
@@ -89,6 +89,8 @@ namespace gsr {
         if(!validate_handler || validate_handler(str)) {
             text.set_string(std::move(str));
             caret_offset_x = text.find_character_pos(99999).x - this->text.get_position().x;
+            if(on_changed)
+                on_changed(text.get_string());
         }
     }
 
diff --git a/src/gui/Label.cpp b/src/gui/Label.cpp
index 09fd1a6..22a302f 100644
--- a/src/gui/Label.cpp
+++ b/src/gui/Label.cpp
@@ -18,6 +18,10 @@ namespace gsr {
         window.draw(text);
     }
 
+    void Label::set_text(std::string str) {
+        text.set_string(std::move(str));
+    }
+
     mgl::vec2f Label::get_size() {
         if(!visible)
             return {0.0f, 0.0f};
diff --git a/src/gui/SettingsPage.cpp b/src/gui/SettingsPage.cpp
index eb9523d..94c33fd 100644
--- a/src/gui/SettingsPage.cpp
+++ b/src/gui/SettingsPage.cpp
@@ -449,8 +449,11 @@ namespace gsr {
             (void)text;
             const bool custom_selected = id == "custom";
             video_bitrate_list_ptr->set_visible(custom_selected);
+
+            if(estimated_file_size_ptr)
+                estimated_file_size_ptr->set_visible(custom_selected);
         };
-        video_quality_box_ptr->on_selection_changed("Very high", "very_high");
+        video_quality_box_ptr->on_selection_changed("", video_quality_box_ptr->get_selected_id());
 
         if(!gsr_info.supported_capture_options.monitors.empty())
             record_area_box_ptr->set_selected_item(gsr_info.supported_capture_options.monitors.front().name);
@@ -545,11 +548,30 @@ namespace gsr {
         return checkbox;
     }
 
+    std::unique_ptr<Label> SettingsPage::create_estimated_file_size() {
+        auto label = std::make_unique<Label>(&get_theme().body_font, "Estimated video max file size in RAM: 5.23MB", get_color_theme().text_color);
+        estimated_file_size_ptr = label.get();
+        return label;
+    }
+
+    void SettingsPage::update_estimated_file_size() {
+        const int64_t replay_time_seconds = atoi(replay_time_entry_ptr->get_text().c_str());
+        const int64_t video_bitrate_bps = atoi(video_bitrate_entry_ptr->get_text().c_str()) * 1000LL;
+        const double video_filesize_mb = ((double)replay_time_seconds * (double)video_bitrate_bps) / 1024.0 / 1024.0 / 3.3333; // Why 3.3333?
+
+        char buffer[512];
+        snprintf(buffer, sizeof(buffer), "Estimated video max file size in RAM: %.2fMB", video_filesize_mb);
+        estimated_file_size_ptr->set_text(buffer);
+    }
+
     void SettingsPage::add_replay_widgets() {
-        auto file_info_list = std::make_unique<List>(List::Orientation::HORIZONTAL);
-        file_info_list->add_widget(create_save_directory("Directory to save replays:"));
-        file_info_list->add_widget(create_container_section());
-        file_info_list->add_widget(create_replay_time());
+        auto file_info_list = std::make_unique<List>(List::Orientation::VERTICAL);
+        auto file_info_data_list = std::make_unique<List>(List::Orientation::HORIZONTAL);
+        file_info_data_list->add_widget(create_save_directory("Directory to save replays:"));
+        file_info_data_list->add_widget(create_container_section());
+        file_info_data_list->add_widget(create_replay_time());
+        file_info_list->add_widget(std::move(file_info_data_list));
+        file_info_list->add_widget(create_estimated_file_size());
         settings_list_ptr->add_widget(std::make_unique<Subsection>("File info", std::move(file_info_list), mgl::vec2f(settings_scrollable_page_ptr->get_inner_size().x, 0.0f)));
 
         auto general_list = std::make_unique<List>(List::Orientation::VERTICAL);
@@ -589,6 +611,14 @@ namespace gsr {
             settings_scrollable_page_ptr->reset_scroll();
         };
         view_radio_button_ptr->on_selection_changed("Simple", "simple");
+
+        replay_time_entry_ptr->on_changed = [this](const std::string&) {
+            update_estimated_file_size();
+        };
+
+        video_bitrate_entry_ptr->on_changed = [this](const std::string&) {
+            update_estimated_file_size();
+        };
     }
 
     std::unique_ptr<CheckBox> SettingsPage::create_save_recording_in_game_folder() {