[mythtv-commits] Ticket #10333: Commit 8038cb11da4e4f803e88f4476d9e49348bb3ca19 introduces various closed caption bugs

MythTV noreply at mythtv.org
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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