KaxSemantic.cpp: make KaxVideoDisplayUnit elements mandatory

See https://github.com/ietf-wg-cellar/matroska-specification/commit/22d23716f2ba61234449d5c5de509ecc14b37f76

diff --git a/src/KaxSemantic.cpp b/src/KaxSemantic.cpp
index 0b57ae413d994de7d2b3d010b2f7fe3a9ca1a89c..9e0f425cc62e23af603304c0f385330cde751e79 100644 (file)
--- a/src/KaxSemantic.cpp
+++ b/src/KaxSemantic.cpp
@@ -332,7 +332,7 @@ DEFINE_SEMANTIC_ITEM(true, true, KaxVideoPixelCropLeft)
 DEFINE_SEMANTIC_ITEM(true, true, KaxVideoPixelCropRight)
 DEFINE_SEMANTIC_ITEM(false, true, KaxVideoDisplayWidth)
 DEFINE_SEMANTIC_ITEM(false, true, KaxVideoDisplayHeight)
-DEFINE_SEMANTIC_ITEM(false, true, KaxVideoDisplayUnit)
+DEFINE_SEMANTIC_ITEM(true, true, KaxVideoDisplayUnit)
 DEFINE_SEMANTIC_ITEM(false, true, KaxVideoAspectRatio) // not supported
 DEFINE_SEMANTIC_ITEM(false, true, KaxVideoColourSpace)
 DEFINE_SEMANTIC_ITEM(false, true, KaxVideoGamma) // not supported