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APNG Specification: Difference between revisions
added note about frames looking same each iteration
(increased restriction for blend_op and dispose_op) |
(added note about frames looking same each iteration) |
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The boundaries of the entire animation are specified by the width and height parameters of the PNG `IHDR` chunk, regardless of whether the default image is part of the animation. The default image should be appropriately padded with fully transparent pixels if extra space will be needed for later frames. | The boundaries of the entire animation are specified by the width and height parameters of the PNG `IHDR` chunk, regardless of whether the default image is part of the animation. The default image should be appropriately padded with fully transparent pixels if extra space will be needed for later frames. | ||
Each frame is identical for each iteration, therefore it is safe for applications to cache the frames. | |||
== Chunk Sequence Numbers == | == Chunk Sequence Numbers == | ||