For more details, see:
https://www.atsc.org/wp-content/uploads/2015/03/a_53-Part-4-2009.pdf
and SMPTE ST2016-1
gstvideo.video_bar_meta
Module for [VideoBarMeta] class
class VideoBarMeta
Types 1
classVideoBarMeta
Bar data should be included in video user data whenever the rectangular picture area containing useful information does not extend to the full height or width of the coded frame and AFD alone is insufficient to describe the extent of the image.
Note
either vertical or horizontal bars are specified, but not both.
Fields
GstVideoBarMeta _cInstanceMethods
void * _cPtr() nothrowubyte field() @property nothrowGet `field` field. Returns: 0 for progressive or field 1 and 1 for field 2void field(ubyte propval) @property nothrowSet `field` field. Params: propval = 0 for progressive or field 1 and 1 for field 2bool isLetterbox() @property nothrowGet `isLetterbox` field. Returns: if true then bar data specifies letterbox, otherwise pillarboxvoid isLetterbox(bool propval) @property nothrowSet `isLetterbox` field. Params: propval = if true then bar data specifies letterbox, otherwise pillarboxuint barData1() @property nothrowGet `barData1` field. Returns: If @is_letterbox is true, then the value specifies the last line of a horizontal letterbox bar area at top of reconstructed frame. Otherwise, it specifies the last ho...void barData1(uint propval) @property nothrowSet `barData1` field. Params: propval = If @is_letterbox is true, then the value specifies the last line of a horizontal letterbox bar area at top of reconstructed frame. Otherwise, it specifies th...uint barData2() @property nothrowGet `barData2` field. Returns: If @is_letterbox is true, then the value specifies the first line of a horizontal letterbox bar area at bottom of reconstructed frame. Otherwise, it specifies the fir...void barData2(uint propval) @property nothrowSet `barData2` field. Params: propval = If @is_letterbox is true, then the value specifies the first line of a horizontal letterbox bar area at bottom of reconstructed frame. Otherwise, it specifie...