i just discovered, that i dont clear understand a field-based
processing, so first question *why does next properties needed*:
consumer_tff
consumer_deinterlace
top_field_first
meta.top_field_first
meta.swap_fields
and next what is a comment about:
transition_composite.c:575:
[...]
<------>// Assuming lower field first
<------>// Special care is taken to make sure the b_frame is aligned to
the correct field.
<------>// field 0 = lower field and y should be odd (y is 0-based).
<------>// field 1 = upper field and y should be even.
<------>if ( ( field > -1 ) && ( y % 2 == field ) )
<------>{
<------><------>if ( ( field == 1 && y < height_dest - 1 ) || ( field ==
0 && y == 0 ) )
<------><------><------>p_dest += stride_dest;
<------><------>else
<------><------><------>p_dest -= stride_dest;
<------>}
[...]
--
Maksym Veremeyenko
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