METHOD AND DEVICE FOR ENCODING/DECODING IMAGE SO THAT IMAGE IS COMPATIBLE WITH MULTIPLE CODECS

摘要

Disclosed is an image decoding method comprising: determining whether or not image data in a base layer, which has been encoded according to a first codec, can be decoded according to a second codec; and decoding the image data in the base layer on the basis of the determined result, wherein the image data includes image data in an extension layer which has been encoded according to the first codec.