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Container spec: a clarification on background color.

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Change-Id: Ifeb565bd162abfa03dfcbf8b576657fe83956a6c
This commit is contained in:
Urvang Joshi 2013-06-20 17:38:08 -07:00
parent 30e77d0f66
commit 5e9675329c
1 changed files with 8 additions and 3 deletions
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7
doc/webp-container-spec.txt
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@ -386,7 +386,12 @@ byte order. This color is used to fill the unused space on the canvas around the
frames, as well as the transparent pixels of the first frame. Background color
is also used when disposal method is `1`.
**Note**: Viewers that have a preferred background against which to present the
**Notes**:
* Background color may contain non-trivial alpha even though _Alpha_ flag in
[VP8X chunk](#extended_header) is unset.
* Viewers that have a preferred background against which to present the
images (web browsers, for example) should ignore this value and use their
preferred background color instead.