From 1e776faecca79b1fd2a72e24cd13d1311d307035 Mon Sep 17 00:00:00 2001 From: tterribe Date: Sat, 22 Jan 2005 18:12:31 +0000 Subject: [PATCH] Update wording for undefined pixel aspect ratios to allow specification by an external means, just like for undefined color spaces. git-svn-id: http://svn.xiph.org/trunk@8779 0101bb08-14d6-0310-b084-bc0e0c8e3800 --- theora/doc/spec/spec.tex | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/theora/doc/spec/spec.tex b/theora/doc/spec/spec.tex index 720e64b74..cd1715376 100644 --- a/theora/doc/spec/spec.tex +++ b/theora/doc/spec/spec.tex @@ -2111,8 +2111,10 @@ Together with \bitvar{PARN}, these specify the aspect ratio of the pixels within a frame, defined as the ratio of the physical width of a pixel to its physical height. This is given by the ratio $\bitvar{PARN}:\bitvar{PARD}$. -Either of these fields MAY be zero, in which case the pixel aspect ratio - defaults to $1:1$. +If either of these fields are zero, this indicates that pixel aspect ratio + information was not available to the encoder. +In this case it MAY be specified by the application via an external means, or + a default value of $1:1$ MAY be used. \item Read an 8-bit unsigned integer as \bitvar{CS}. This is a value from an enumerated list of the available color spaces, given in -- 2.11.4.GIT