Fix subtitle vertical position (#2367).

Previously we would not account for the differences in what vertical
position means between Interop and SMPTE.  For interop, vertical
position is the distance from the reference point to the text
baseline, whereas for SMPTE it is the distance from the reference
point to the top/middle/bottom of the subtitle (depending on the
reference).

This caused differences between the preview and the DCP for some
cases (notably, using SRT/SSA and making Interop DCPs, or converting
Interop DCP subs to SMPTE, or vice versa).

1 files changed, 0 insertions, 0 deletions

diff --git a/test/data b/test/data
-Subproject 92d2787d602701d5faf53f0ab7430f62bec0916
+Subproject ef2374f03fbd715883da46bb3cb011befa11615