[mythtv-commits] Ticket #10333: Commit 8038cb11da4e4f803e88f4476d9e49348bb3ca19 introduces various closed caption bugs
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Wed Feb 15 02:43:19 UTC 2012
#10333: Commit 8038cb11da4e4f803e88f4476d9e49348bb3ca19 introduces various closed
caption bugs
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Reporter: Clayton Smith <argilo@…> | Owner: stichnot
Type: Bug Report - General | Status: accepted
Priority: minor | Milestone: 0.25
Component: MythTV - Captions | Version: Master
Severity: medium | Head
Keywords: cea-708 | Resolution:
| Ticket locked: 0
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Comment (by Clayton Smith <argilo@…>):
The following section seems to be what is intended to keep captions on the
screen. My guess would be that the 1/15 rule is violated when FreeSans is
used.
"9.13 DTVCC Section 8.5.1 - Pen Size
At a minimum, decoders must support the STANDARD pen size, with the
implementation of the LARGE and SMALL pen sizes being optional.
The STANDARD pen size should be implemented such that the height of the
tallest character in any implemented font is no taller than 1/15 of the
height of the safe-title area, and the width of the widest character is no
wider than 1/32 of the width of the safe-title area for 4:3 displays and
1/42 of the safe-title area width for 16:9 displays.
The LARGE pen size should be implemented such that the width of the widest
character in any implemented font is no wider than 1/32 of the safe-title
area for 16:9 displays. This recommendation allows for captions to grow to
a LARGE pen size without having to reformat the caption since no caption
will have more than 32 characters per row (see Section 8.4.6)."
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Ticket URL: <http://code.mythtv.org/trac/ticket/10333#comment:4>
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