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The APNG (Animated Portable Network Graphics) file format is an extension to the Portable Network Graphics (PNG) specification proposed by Stuart Parmenter and Vladimir Vukicevic of the Mozilla Corporation. It allows for animated PNG files that work similarly to animated graphics interchange format (GIF) files, while retaining backward compatibility with non-animated PNG files.
The first frame on an APNG file is stored as a normal PNG stream, and so most old PNG decoders will be able to display the first frame of an APNG file. The frame speed data and extra animation frames are stored in extra chunks (as provided for by the original PNG specification).
MNG is another animated image format closely related to PNG. APNG's advantage is the smaller library size and defacto compatibility with older PNG implementations.
The first frame on an APNG file is stored as a normal PNG stream, and so most old PNG decoders will be able to display the first frame of an APNG file. The frame speed data and extra animation frames are stored in extra chunks (as provided for by the original PNG specification).
MNG is another animated image format closely related to PNG. APNG's advantage is the smaller library size and defacto compatibility with older PNG implementations.
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Se non vado errato l'alpha6 di Firefox3 uscita ieri ha il supporto (forse già c'era dall'alpha5, comunque sarà integrato per la release di Firefox3)
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