diff --git a/win32/common/libgstbase.def b/win32/common/libgstbase.def
index b65976a5e7..d1fee7b10f 100644
--- a/win32/common/libgstbase.def
+++ b/win32/common/libgstbase.def
@@ -62,6 +62,7 @@ EXPORTS
 	gst_bit_reader_get_bits_uint8
 	gst_bit_reader_get_pos
 	gst_bit_reader_get_remaining
+	gst_bit_reader_get_size
 	gst_bit_reader_init
 	gst_bit_reader_init_from_buffer
 	gst_bit_reader_new
@@ -94,6 +95,7 @@ EXPORTS
 	gst_byte_reader_get_int8
 	gst_byte_reader_get_pos
 	gst_byte_reader_get_remaining
+	gst_byte_reader_get_size
 	gst_byte_reader_get_string_utf8
 	gst_byte_reader_get_uint16_be
 	gst_byte_reader_get_uint16_le
@@ -138,6 +140,48 @@ EXPORTS
 	gst_byte_reader_skip_string_utf16
 	gst_byte_reader_skip_string_utf32
 	gst_byte_reader_skip_string_utf8
+	gst_byte_writer_ensure_free_space
+	gst_byte_writer_free
+	gst_byte_writer_free_and_get_buffer
+	gst_byte_writer_free_and_get_data
+	gst_byte_writer_get_remaining
+	gst_byte_writer_init
+	gst_byte_writer_init_with_buffer
+	gst_byte_writer_init_with_data
+	gst_byte_writer_init_with_size
+	gst_byte_writer_new
+	gst_byte_writer_new_with_buffer
+	gst_byte_writer_new_with_data
+	gst_byte_writer_new_with_size
+	gst_byte_writer_put_data
+	gst_byte_writer_put_float32_be
+	gst_byte_writer_put_float32_le
+	gst_byte_writer_put_float64_be
+	gst_byte_writer_put_float64_le
+	gst_byte_writer_put_int16_be
+	gst_byte_writer_put_int16_le
+	gst_byte_writer_put_int24_be
+	gst_byte_writer_put_int24_le
+	gst_byte_writer_put_int32_be
+	gst_byte_writer_put_int32_le
+	gst_byte_writer_put_int64_be
+	gst_byte_writer_put_int64_le
+	gst_byte_writer_put_int8
+	gst_byte_writer_put_string_utf16
+	gst_byte_writer_put_string_utf32
+	gst_byte_writer_put_string_utf8
+	gst_byte_writer_put_uint16_be
+	gst_byte_writer_put_uint16_le
+	gst_byte_writer_put_uint24_be
+	gst_byte_writer_put_uint24_le
+	gst_byte_writer_put_uint32_be
+	gst_byte_writer_put_uint32_le
+	gst_byte_writer_put_uint64_be
+	gst_byte_writer_put_uint64_le
+	gst_byte_writer_put_uint8
+	gst_byte_writer_reset
+	gst_byte_writer_reset_and_get_buffer
+	gst_byte_writer_reset_and_get_data
 	gst_collect_pads_add_pad
 	gst_collect_pads_add_pad_full
 	gst_collect_pads_available