diff --git a/modules/core/include/opencv2/core/persistence.hpp b/modules/core/include/opencv2/core/persistence.hpp
index c6ddf6f0ca..26ec13831f 100644
--- a/modules/core/include/opencv2/core/persistence.hpp
+++ b/modules/core/include/opencv2/core/persistence.hpp
@@ -273,6 +273,7 @@ public:
         FORMAT_XML  = (1<<3), //!< flag, XML format
         FORMAT_YAML = (2<<3), //!< flag, YAML format
         FORMAT_JSON = (3<<3), //!< flag, JSON format
+        FORMAT_YAML_1_0 = (4<<3), //!< flag, Legacy YAML 1.0 format (strict headers, booleans as ints)
 
         BASE64      = 64,     //!< flag, write rawdata in Base64 by default. (consider using WRITE_BASE64)
         WRITE_BASE64 = BASE64 | WRITE, //!< flag, enable both WRITE and BASE64
@@ -365,6 +366,8 @@ public:
      */
     CV_WRAP void write(const String& name, int val);
     /// @overload
+    CV_WRAP void write(const String& name, bool val);
+
     CV_WRAP void write(const String& name, int64_t val);
     /// @overload
     CV_WRAP void write(const String& name, double val);
@@ -658,6 +661,7 @@ protected:
 /////////////////// XML & YAML I/O implementation //////////////////
 
 CV_EXPORTS void write( FileStorage& fs, const String& name, int value );
+CV_EXPORTS void write( FileStorage& fs, const String& name, bool value );
 CV_EXPORTS void write( FileStorage& fs, const String& name, int64_t value );
 CV_EXPORTS void write( FileStorage& fs, const String& name, float value );
 CV_EXPORTS void write( FileStorage& fs, const String& name, double value );
diff --git a/modules/core/src/persistence.cpp b/modules/core/src/persistence.cpp
index 4f0cf2868a..a449783781 100644
--- a/modules/core/src/persistence.cpp
+++ b/modules/core/src/persistence.cpp
@@ -695,9 +695,13 @@ bool FileStorage::Impl::open(const char *filename_or_buf, int _flags, const char
             }
 
             emitter_do_not_use_direct_dereference = createXMLEmitter(this);
-        } else if (fmt == FileStorage::FORMAT_YAML) {
-            if (!append)
-                puts("%YAML:1.0\n---\n");
+        } else if (fmt == FileStorage::FORMAT_YAML || fmt == FileStorage::FORMAT_YAML_1_0) {
+                if (!append) {
+                    if (fmt == FileStorage::FORMAT_YAML_1_0)
+                        puts("%YAML:1.0\n---\n"); // Legacy Flag -> Legacy Header
+                    else
+                        puts("%YAML 1.2\n---\n"); // Default -> Modern Header
+                }
             else
                 puts("...\n---\n");
 
@@ -750,16 +754,15 @@ bool FileStorage::Impl::open(const char *filename_or_buf, int _flags, const char
         char *bufPtr = cv_skip_BOM(buf);
         size_t bufOffset = bufPtr - buf;
 
+        // NOTE: Yaml 1.2 allows to skip header. Data without type signature is read as YAML
         if (strncmp(bufPtr, yaml_signature, strlen(yaml_signature)) == 0)
             fmt = FileStorage::FORMAT_YAML;
         else if (strncmp(bufPtr, json_signature, strlen(json_signature)) == 0)
             fmt = FileStorage::FORMAT_JSON;
         else if (strncmp(bufPtr, xml_signature, strlen(xml_signature)) == 0)
             fmt = FileStorage::FORMAT_XML;
-        else if (strbufsize == bufOffset)
-            CV_Error(cv::Error::StsBadArg, "Input file is invalid");
         else
-            CV_Error(cv::Error::StsBadArg, "Unsupported file storage format");
+            fmt = FileStorage::FORMAT_YAML;
 
         rewind();
         strbufpos = bufOffset;
@@ -782,6 +785,7 @@ bool FileStorage::Impl::open(const char *filename_or_buf, int _flags, const char
                     parser_do_not_use_direct_dereference = createXMLParser(this);
                     break;
                 case FileStorage::FORMAT_YAML:
+                case FileStorage::FORMAT_YAML_1_0:
                     parser_do_not_use_direct_dereference = createYAMLParser(this);
                     break;
                 case FileStorage::FORMAT_JSON:
@@ -2156,7 +2160,13 @@ void write( FileStorage& fs, const String& name, const String& value )
     fs.p->write(name, value);
 }
 
+void write( FileStorage& fs, const String& name, bool value )
+{
+    fs.p->write(name, value);
+}
+
 void FileStorage::write(const String& name, int val) { p->write(name, val); }
+void FileStorage::write(const String& name, bool val) { p->write(name, val); }
 void FileStorage::write(const String& name, int64_t val) { p->write(name, val); }
 void FileStorage::write(const String& name, double val) { p->write(name, val); }
 void FileStorage::write(const String& name, const String& val) { p->write(name, val); }
@@ -2894,6 +2904,21 @@ void read(const FileNode& node, std::string& val, const std::string& default_val
         val = (std::string)node;
     }
 }
+void FileStorage::Impl::write(const String &key, bool value)
+{
+    CV_Assert(write_mode);
+    // [SWAP LOGIC]
+    if (fmt == FileStorage::FORMAT_YAML_1_0)
+    {
+        // Legacy behavior: Write as integer 1 or 0
+        getEmitter().write(key.c_str(), (int)value);
+    }
+    else
+    {
+        // Default/Modern behavior: Write as "true" or "false"
+        getEmitter().write(key.c_str(), value ? "true" : "false", false);
+    }
+}
 
 FileStorage_API::~FileStorage_API() {}
 
diff --git a/modules/core/src/persistence.hpp b/modules/core/src/persistence.hpp
index 55ccd51254..6dca4adad8 100644
--- a/modules/core/src/persistence.hpp
+++ b/modules/core/src/persistence.hpp
@@ -137,6 +137,8 @@ public:
     virtual ~FileStorage_API();
     virtual FileStorage* getFS() = 0;
 
+    virtual int getFormat() const = 0;
+
     virtual void puts( const char* str ) = 0;
     virtual char* gets() = 0;
     virtual bool eof() = 0;
diff --git a/modules/core/src/persistence_impl.hpp b/modules/core/src/persistence_impl.hpp
index 11a83f2253..b1c922e082 100644
--- a/modules/core/src/persistence_impl.hpp
+++ b/modules/core/src/persistence_impl.hpp
@@ -69,6 +69,8 @@ public:
 
     void write( const String& key, int value );
 
+    void write( const String& key, bool value );
+
     void write( const String& key, int64_t value );
 
     void write( const String& key, double value );
@@ -97,7 +99,7 @@ public:
 
     FileNode operator[](const char* /*nodename*/) const;
 
-    int getFormat() const;
+    virtual int getFormat() const CV_OVERRIDE;
 
     char* bufferPtr() const;
     char* bufferStart() const;
diff --git a/modules/core/src/persistence_yml.cpp b/modules/core/src/persistence_yml.cpp
index d926fd0b2e..d78ea6b438 100644
--- a/modules/core/src/persistence_yml.cpp
+++ b/modules/core/src/persistence_yml.cpp
@@ -728,10 +728,30 @@ public:
                 if( is_parent_flow || c != ':' )
                 {
                     char* str_end = endptr;
-                    // strip spaces in the end of string
                     do c = *--str_end;
                     while( str_end > ptr && c == ' ' );
                     str_end++;
+                    if ((fs->getFormat() & FileStorage::FORMAT_MASK) != FileStorage::FORMAT_YAML_1_0)
+                    {
+                        size_t llen = str_end - ptr;
+                        if (llen == 4 && memcmp(ptr, "true", 4) == 0) {
+                            int64_t ival = 1;
+                            node.setValue(FileNode::INT, &ival);
+                            ptr = endptr;
+                            return ptr;
+                        }
+                        else if (llen == 5 && memcmp(ptr, "false", 5) == 0) {
+                            int64_t ival = 0;
+                            node.setValue(FileNode::INT, &ival);
+                            ptr = endptr;
+                            return ptr;
+                        }
+                        else if (llen == 4 && memcmp(ptr, "null", 4) == 0) {
+                            ptr = endptr;
+                            return ptr;
+                        }
+                    }
+
                     node.setValue(FileNode::STRING, ptr, (int)(str_end - ptr));
                     ptr = endptr;
                     return ptr;
@@ -806,7 +826,10 @@ public:
                     if( memcmp( ptr, "%YAML", 5 ) == 0 &&
                         memcmp( ptr, "%YAML:1.", 8 ) != 0 &&
                         memcmp( ptr, "%YAML 1.", 8 ) != 0)
-                        CV_PARSE_ERROR_CPP( "Unsupported YAML version (it must be 1.x)" );
+                    {
+                        if ((fs->getFormat() & FileStorage::FORMAT_MASK) == FileStorage::FORMAT_YAML_1_0)
+                            CV_PARSE_ERROR_CPP( "Unsupported YAML version (it must be 1.x)" );
+                    }
                     *ptr = '\0';
                 }
                 else if( *ptr == '-' )
diff --git a/modules/core/test/test_io.cpp b/modules/core/test/test_io.cpp
index b0aeda4025..1edc72f187 100644
--- a/modules/core/test/test_io.cpp
+++ b/modules/core/test/test_io.cpp
@@ -499,7 +499,7 @@ TEST(Core_InputOutput, FileStorageKey)
     EXPECT_NO_THROW(f << "key1" << "value1");
     EXPECT_NO_THROW(f << "_key2" << "value2");
     EXPECT_NO_THROW(f << "key_3" << "value3");
-    const std::string expected = "%YAML:1.0\n---\nkey1: value1\n_key2: value2\nkey_3: value3\n";
+    const std::string expected = "%YAML 1.2\n---\nkey1: value1\n_key2: value2\nkey_3: value3\n";
     ASSERT_STREQ(f.releaseAndGetString().c_str(), expected.c_str());
 }
 
@@ -1199,7 +1199,7 @@ TEST(Core_InputOutput, FileStorage_DMatch)
 
     EXPECT_NO_THROW(fs << "d" << d);
     cv::String fs_result = fs.releaseAndGetString();
-    EXPECT_STREQ(fs_result.c_str(), "%YAML:1.0\n---\nd: [ 1, 2, 3, -1.5 ]\n");
+    EXPECT_STREQ(fs_result.c_str(), "%YAML 1.2\n---\nd: [ 1, 2, 3, -1.5 ]\n");
 
     cv::FileStorage fs_read(fs_result, cv::FileStorage::READ | cv::FileStorage::MEMORY);
 
@@ -1227,7 +1227,7 @@ TEST(Core_InputOutput, FileStorage_DMatch_vector)
     EXPECT_NO_THROW(fs << "dv" << dv);
     cv::String fs_result = fs.releaseAndGetString();
     EXPECT_STREQ(fs_result.c_str(),
-"%YAML:1.0\n"
+"%YAML 1.2\n"
 "---\n"
 "dv:\n"
 "   - [ 1, 2, 3, -1.5 ]\n"
@@ -1274,7 +1274,7 @@ TEST(Core_InputOutput, FileStorage_DMatch_vector_vector)
     cv::String fs_result = fs.releaseAndGetString();
 #ifndef OPENCV_TRAITS_ENABLE_DEPRECATED
     EXPECT_STREQ(fs_result.c_str(),
-"%YAML:1.0\n"
+"%YAML 1.2\n"
 "---\n"
 "dvv:\n"
 "   -\n"
@@ -2278,4 +2278,50 @@ INSTANTIATE_TEST_CASE_P(Core_InputOutput,
     FileStorage_exact_type, Values(".yml", ".xml", ".json")
 );
 
+TEST(Core_InputOutput, YAML_Compatibility)
+{
+    string filename = cv::tempfile(".yaml");
+
+    // 1. Write using DEFAULT (should be 1.2 compatible now)
+    {
+        FileStorage fs(filename, FileStorage::WRITE | FileStorage::FORMAT_YAML);
+        ASSERT_TRUE(fs.isOpened());
+        fs << "bool_true" << true;
+        fs << "bool_false" << false;
+        fs.release();
+    }
+
+    // 2. Verify Default is Modern (Literals + No Legacy Header)
+    {
+        std::ifstream file(filename.c_str());
+        std::stringstream buffer;
+        buffer << file.rdbuf();
+        std::string content = buffer.str();
+
+        EXPECT_NE(content.find("bool_true: true"), std::string::npos); // Found 'true'
+        EXPECT_EQ(content.find("%YAML:1.0"), std::string::npos);       // No 1.0 Header
+    }
+
+    // 3. Write using LEGACY flag
+    {
+        FileStorage fs(filename, FileStorage::WRITE | FileStorage::FORMAT_YAML_1_0);
+        ASSERT_TRUE(fs.isOpened());
+        fs << "bool_true" << true;
+        fs.release();
+    }
+
+    // 4. Verify Legacy (Integers + Strict Header)
+    {
+        std::ifstream file(filename.c_str());
+        std::stringstream buffer;
+        buffer << file.rdbuf();
+        std::string content = buffer.str();
+
+        EXPECT_NE(content.find("bool_true: 1"), std::string::npos);    // Found '1'
+        EXPECT_NE(content.find("%YAML:1.0"), std::string::npos);       // Found 1.0 Header
+    }
+
+    remove(filename.c_str());
+}
+
 }} // namespace
diff --git a/modules/features/misc/java/test/BruteForceDescriptorMatcherTest.java b/modules/features/misc/java/test/BruteForceDescriptorMatcherTest.java
index 8031490dd9..10021358af 100644
--- a/modules/features/misc/java/test/BruteForceDescriptorMatcherTest.java
+++ b/modules/features/misc/java/test/BruteForceDescriptorMatcherTest.java
@@ -297,7 +297,7 @@ public class BruteForceDescriptorMatcherTest extends OpenCVTestCase {
 
         matcher.write(filename);
 
-        String truth = "%YAML:1.0\n---\n";
+        String truth = "%YAML 1.2\n---\n";
         assertEquals(truth, readFile(filename));
     }
 
diff --git a/modules/features/misc/java/test/BruteForceHammingDescriptorMatcherTest.java b/modules/features/misc/java/test/BruteForceHammingDescriptorMatcherTest.java
index 83f03b34e9..63d2e88aee 100644
--- a/modules/features/misc/java/test/BruteForceHammingDescriptorMatcherTest.java
+++ b/modules/features/misc/java/test/BruteForceHammingDescriptorMatcherTest.java
@@ -255,7 +255,7 @@ public class BruteForceHammingDescriptorMatcherTest extends OpenCVTestCase {
 
         matcher.write(filename);
 
-        String truth = "%YAML:1.0\n---\n";
+        String truth = "%YAML 1.2\n---\n";
         assertEquals(truth, readFile(filename));
     }
 
diff --git a/modules/features/misc/java/test/BruteForceHammingLUTDescriptorMatcherTest.java b/modules/features/misc/java/test/BruteForceHammingLUTDescriptorMatcherTest.java
index 6940103a99..0ff616be19 100644
--- a/modules/features/misc/java/test/BruteForceHammingLUTDescriptorMatcherTest.java
+++ b/modules/features/misc/java/test/BruteForceHammingLUTDescriptorMatcherTest.java
@@ -250,7 +250,7 @@ public class BruteForceHammingLUTDescriptorMatcherTest extends OpenCVTestCase {
 
         matcher.write(filename);
 
-        String truth = "%YAML:1.0\n---\n";
+        String truth = "%YAML 1.2\n---\n";
         assertEquals(truth, readFile(filename));
     }
 
diff --git a/modules/features/misc/java/test/BruteForceL1DescriptorMatcherTest.java b/modules/features/misc/java/test/BruteForceL1DescriptorMatcherTest.java
index 49c5f728e4..2363df9071 100644
--- a/modules/features/misc/java/test/BruteForceL1DescriptorMatcherTest.java
+++ b/modules/features/misc/java/test/BruteForceL1DescriptorMatcherTest.java
@@ -261,7 +261,7 @@ public class BruteForceL1DescriptorMatcherTest extends OpenCVTestCase {
 
         matcher.write(filename);
 
-        String truth = "%YAML:1.0\n---\n";
+        String truth = "%YAML 1.2\n---\n";
         assertEquals(truth, readFile(filename));
     }
 
diff --git a/modules/features/misc/java/test/BruteForceSL2DescriptorMatcherTest.java b/modules/features/misc/java/test/BruteForceSL2DescriptorMatcherTest.java
index 93b7b97868..bba4fd2fb4 100644
--- a/modules/features/misc/java/test/BruteForceSL2DescriptorMatcherTest.java
+++ b/modules/features/misc/java/test/BruteForceSL2DescriptorMatcherTest.java
@@ -273,7 +273,7 @@ public class BruteForceSL2DescriptorMatcherTest extends OpenCVTestCase {
 
         matcher.write(filename);
 
-        String truth = "%YAML:1.0\n---\n";
+        String truth = "%YAML 1.2\n---\n";
         assertEquals(truth, readFile(filename));
     }
 
diff --git a/modules/features/misc/java/test/FASTFeatureDetectorTest.java b/modules/features/misc/java/test/FASTFeatureDetectorTest.java
index 8ef67dd46f..7d8cf1685f 100644
--- a/modules/features/misc/java/test/FASTFeatureDetectorTest.java
+++ b/modules/features/misc/java/test/FASTFeatureDetectorTest.java
@@ -133,7 +133,7 @@ public class FASTFeatureDetectorTest extends OpenCVTestCase {
 
         detector.write(filename);
 
-        String truth = "%YAML:1.0\n---\nname: \"Feature2D.FastFeatureDetector\"\nthreshold: 10\nnonmaxSuppression: 1\ntype: 2\n";
+        String truth = "%YAML 1.2\n---\nname: \"Feature2D.FastFeatureDetector\"\nthreshold: 10\nnonmaxSuppression: true\ntype: 2\n";
         String data = readFile(filename);
 
         assertEquals(truth, data);
diff --git a/modules/features/misc/java/test/FlannBasedDescriptorMatcherTest.java b/modules/features/misc/java/test/FlannBasedDescriptorMatcherTest.java
index c45b460ad4..d4fbb4be02 100644
--- a/modules/features/misc/java/test/FlannBasedDescriptorMatcherTest.java
+++ b/modules/features/misc/java/test/FlannBasedDescriptorMatcherTest.java
@@ -51,7 +51,7 @@ public class FlannBasedDescriptorMatcherTest extends OpenCVTestCase {
             + "    <type>8</type>\n"  // FLANN_INDEX_TYPE_BOOL
             + "    <value>1</value></_></searchParams>\n"
             + "</opencv_storage>\n";
-    static final String ymlParamsDefault = "%YAML:1.0\n---\n"
+    static final String ymlParamsDefault = "%YAML 1.2\n---\n"
             + "format: 3\n"
             + "indexParams:\n"
             + "   -\n"
@@ -79,7 +79,7 @@ public class FlannBasedDescriptorMatcherTest extends OpenCVTestCase {
             + "      name: sorted\n"
             + "      type: 8\n"  // FLANN_INDEX_TYPE_BOOL
             + "      value: 1\n";
-    static final String ymlParamsModified = "%YAML:1.0\n---\n"
+    static final String ymlParamsModified = "%YAML 1.2\n---\n"
             + "format: 3\n"
             + "indexParams:\n"
             + "   -\n"
diff --git a/modules/features/misc/java/test/GFTTFeatureDetectorTest.java b/modules/features/misc/java/test/GFTTFeatureDetectorTest.java
index 248c62e1c6..2dddeea716 100644
--- a/modules/features/misc/java/test/GFTTFeatureDetectorTest.java
+++ b/modules/features/misc/java/test/GFTTFeatureDetectorTest.java
@@ -58,7 +58,7 @@ public class GFTTFeatureDetectorTest extends OpenCVTestCase {
 
         detector.write(filename);
 
-        String truth = "%YAML:1.0\n---\nname: \"Feature2D.GFTTDetector\"\nnfeatures: 1000\nqualityLevel: 0.01\nminDistance: 1.\nblockSize: 3\ngradSize: 3\nuseHarrisDetector: 0\nk: 0.040000000000000001\n";
+        String truth = "%YAML 1.2\n---\nname: \"Feature2D.GFTTDetector\"\nnfeatures: 1000\nqualityLevel: 0.01\nminDistance: 1.\nblockSize: 3\ngradSize: 3\nuseHarrisDetector: false\nk: 0.040000000000000001\n";
         String actual = readFile(filename);
         actual = actual.replaceAll("e([+-])0(\\d\\d)", "e$1$2"); // NOTE: workaround for different platforms double representation
         assertEquals(truth, actual);
diff --git a/modules/features/misc/java/test/MSERFeatureDetectorTest.java b/modules/features/misc/java/test/MSERFeatureDetectorTest.java
index 4b3baa1b42..aa23618f08 100644
--- a/modules/features/misc/java/test/MSERFeatureDetectorTest.java
+++ b/modules/features/misc/java/test/MSERFeatureDetectorTest.java
@@ -61,7 +61,7 @@ public class MSERFeatureDetectorTest extends OpenCVTestCase {
 
         detector.write(filename);
 
-        String truth = "%YAML:1.0\n---\nname: \"Feature2D.MSER\"\ndelta: 5\nminArea: 60\nmaxArea: 14400\nmaxVariation: 0.25\nminDiversity: 0.20000000000000001\nmaxEvolution: 200\nareaThreshold: 1.01\nminMargin: 0.0030000000000000001\nedgeBlurSize: 5\npass2Only: 0\n";
+        String truth = "%YAML 1.2\n---\nname: \"Feature2D.MSER\"\ndelta: 5\nminArea: 60\nmaxArea: 14400\nmaxVariation: 0.25\nminDiversity: 0.20000000000000001\nmaxEvolution: 200\nareaThreshold: 1.01\nminMargin: 0.0030000000000000001\nedgeBlurSize: 5\npass2Only: false\n";
         String actual = readFile(filename);
         actual = actual.replaceAll("e([+-])0(\\d\\d)", "e$1$2"); // NOTE: workaround for different platforms double representation
         assertEquals(truth, actual);
diff --git a/modules/features/misc/java/test/ORBDescriptorExtractorTest.java b/modules/features/misc/java/test/ORBDescriptorExtractorTest.java
index d4b58149f9..1d452975d7 100644
--- a/modules/features/misc/java/test/ORBDescriptorExtractorTest.java
+++ b/modules/features/misc/java/test/ORBDescriptorExtractorTest.java
@@ -111,7 +111,7 @@ public class ORBDescriptorExtractorTest extends OpenCVTestCase {
 
         extractor.write(filename);
 
-        String truth = "%YAML:1.0\n---\nname: \"Feature2D.ORB\"\nnfeatures: 500\nscaleFactor: 1.2000000476837158\nnlevels: 8\nedgeThreshold: 31\nfirstLevel: 0\nwta_k: 2\nscoreType: 0\npatchSize: 31\nfastThreshold: 20\n";
+        String truth = "%YAML 1.2\n---\nname: \"Feature2D.ORB\"\nnfeatures: 500\nscaleFactor: 1.2000000476837158\nnlevels: 8\nedgeThreshold: 31\nfirstLevel: 0\nwta_k: 2\nscoreType: 0\npatchSize: 31\nfastThreshold: 20\n";
 //        String truth = "%YAML:1.0\n---\n";
         String actual = readFile(filename);
         actual = actual.replaceAll("e\\+000", "e+00"); // NOTE: workaround for different platforms double representation
diff --git a/modules/features/misc/java/test/SIFTDescriptorExtractorTest.java b/modules/features/misc/java/test/SIFTDescriptorExtractorTest.java
index 0dbb932181..da86fdad9c 100644
--- a/modules/features/misc/java/test/SIFTDescriptorExtractorTest.java
+++ b/modules/features/misc/java/test/SIFTDescriptorExtractorTest.java
@@ -100,7 +100,7 @@ public class SIFTDescriptorExtractorTest extends OpenCVTestCase {
 
         extractor.write(filename);
 
-        String truth = "%YAML:1.0\n---\nname: \"Feature2D.SIFT\"\nnfeatures: 0\nnOctaveLayers: 3\ncontrastThreshold: 0.040000000000000001\nedgeThreshold: 10.\nsigma: 1.6000000000000001\ndescriptorType: 5\n";
+        String truth = "%YAML 1.2\n---\nname: \"Feature2D.SIFT\"\nnfeatures: 0\nnOctaveLayers: 3\ncontrastThreshold: 0.040000000000000001\nedgeThreshold: 10.\nsigma: 1.6000000000000001\ndescriptorType: 5\n";
         String actual = readFile(filename);
         actual = actual.replaceAll("e([+-])0(\\d\\d)", "e$1$2"); // NOTE: workaround for different platforms double representation
         assertEquals(truth, actual);
diff --git a/modules/features/test/test_matchers_algorithmic.cpp b/modules/features/test/test_matchers_algorithmic.cpp
index 317b15beee..e573425bed 100644
--- a/modules/features/test/test_matchers_algorithmic.cpp
+++ b/modules/features/test/test_matchers_algorithmic.cpp
@@ -558,7 +558,7 @@ TEST( Features2d_DMatch, read_write )
 #ifdef HAVE_OPENCV_FLANN
 TEST( Features2d_FlannBasedMatcher, read_write )
 {
-    static const char* ymlfile = "%YAML:1.0\n---\n"
+    static const char* ymlfile = "%YAML 1.2\n---\n"
     "format: 3\n"
     "indexParams:\n"
     "   -\n"
diff --git a/modules/python/test/requirements.txt b/modules/python/test/requirements.txt
new file mode 100644
index 0000000000..5209eeef20
--- /dev/null
+++ b/modules/python/test/requirements.txt
@@ -0,0 +1,2 @@
+pyyml
+numpy
\ No newline at end of file
diff --git a/modules/python/test/test_persistence.py b/modules/python/test/test_persistence.py
index cfa4225ebe..2fb846678f 100644
--- a/modules/python/test/test_persistence.py
+++ b/modules/python/test/test_persistence.py
@@ -4,7 +4,7 @@ import tempfile
 import os
 import cv2 as cv
 import numpy as np
-from tests_common import NewOpenCVTests
+from tests_common import NewOpenCVTests, unittest
 
 
 class persistence_test(NewOpenCVTests):
@@ -42,3 +42,46 @@ class persistence_test(NewOpenCVTests):
         fs.release()
 
         os.remove(fname)
+
+    def test_yml_python_interop(self):
+        try:
+            import yaml
+        except:
+            raise unittest.SkipTest('Pyyml is not available for interop test')
+
+        ref_data = {
+            'int_value': 42,
+            "bool_value": True,
+            "float_value": 3.1415926,
+            "int64_value": 2147483647 + 1024, # C++ INT_MAX + 1024
+            "string_value": "opencv"
+        }
+
+        fd, test_file_name = tempfile.mkstemp(prefix="opencv_python_persistence_", suffix=".yml")
+        os.close(fd)
+
+        with open(test_file_name, 'w') as ff:
+            yaml.dump(ref_data, ff)
+
+        # Notice: no cv.FileStorage_FORMAT_YAML flag needed now thanks to the C++ fix!
+        fs = cv.FileStorage(test_file_name, cv.FILE_STORAGE_READ)
+        self.assertTrue(fs.isOpened())
+
+        node = fs.getNode('int_value')
+        self.assertTrue(node.isInt())
+        self.assertEqual(42, int(node.real()))
+
+        node = fs.getNode('int64_value')
+        self.assertTrue(node.isInt())
+        self.assertEqual(2147483647 + 1024, int(node.real()))
+
+        node = fs.getNode('float_value')
+        self.assertTrue(node.isReal())
+        self.assertEqual(3.1415926, node.real())
+
+        node = fs.getNode('string_value')
+        self.assertTrue(node.isString())
+        self.assertEqual("opencv", node.string())
+
+        fs.release()
+        os.remove(test_file_name)