will also be cleared.
* - ``V4L2_DV_FL_HALF_LINE``
- Specific to interlaced formats: if set, then the vertical
- frontporch of field 1 (aka the odd field) is really one half-line
+ backporch of field 1 (aka the odd field) is really one half-line
longer and the vertical backporch of field 2 (aka the even field)
is really one half-line shorter, so each field has exactly the
same number of half-lines. Whether half-lines can be detected or