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As specified in EIA/CEA-608-B section 8.4: When closed captioning is used on line 21, field 2, it shall conform to all of the applicable specifications and recommended practices as defined for field 1 services with the following differences: a) The non-printing character of the miscellaneous control-character pairs that fall in the range of 14h, 20h to 14h, 2Fh in field 1, shall be replaced with 15h, 20h to 15h, 2Fh when used in field 2. b) The non-printing character of the miscellaneous control-character pairs that fall in the range of 1Ch, 20h to 1Ch, 2Fh in field 1, shall be replaced with 1Dh, 20h to 1Dh, 2Fh when used in field 2. This means simply switching the "field" field in the caps isn't enough for converting raw 608 from one field to another, some control codes also need to be amended. + Adds simple test Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4126> |
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| meson.build | ||