An encapsulation method comprising: determining that a bitstream comprises first encapsulation units comprising video data representing a base layer of a hybrid codec scalable video and encoded according to a first video coding standard and second encapsulation units comprising video data representing at least one enhancement layer of said hybrid codec scalable video and encoded according to a second, different video coding standard; and adding a prefix syntax element to each second encapsulation unit, said prefix syntax element having a value selected among a defined set of at least one value that will trigger a decoder conforming to said first video coding standard to discard or ignore said second encapsulation units, wherein each first encapsulation unit comprises a first encapsulation unit header, with an encapsulation unit type value, and a payload portion and each second encapsulation unit comprises a second encapsulation unit header, with an encapsulation unit type value, and a payload portion; and said defined set of at least one value correspond to at least one encapsulation unit type value that will trigger said decoder conforming to said first video coding standard to discard or ignore said second encapsulation units, and wherein adding said prefix syntax element comprises adding, to each second encapsulation unit, said prefix syntax element having a value selected among said defined set corresponding to at least one encapsulation unit type value that is defined as reserved for future use or unspecified according to said first video coding specification/format/standard and according to said second video coding specification/format/standard. determining that a bitstream comprises first encapsulation units comprising video data representing a base layer of a hybrid codec scalable video and encoded according to a first video coding standard and second encapsulation units comprising video data representing at least one enhancement layer of said hybrid codec scalable video and encoded according to a second, different video coding standard; and adding a prefix syntax element to each second encapsulation unit, said prefix syntax element having a value selected among a defined set of at least one value that will trigger a decoder conforming to said first video coding standard to discard or ignore said second encapsulation units, wherein each first encapsulation unit comprises a first encapsulation unit header, with an encapsulation unit type value, and a payload portion and each second encapsulation unit comprises a second encapsulation unit header, with an encapsulation unit type value, and a payload portion; and said defined set of at least one value correspond to at least one encapsulation unit type value that will trigger said decoder conforming to said first video coding standard to discard or ignore said second encapsulation units, and wherein adding said prefix syntax element comprises adding, to each second encapsulation unit, said prefix syntax element having a value selected among said defined set corresponding to at least one encapsulation unit type value that is defined as reserved for future use or unspecified according to said first video coding specification/format/standard and according to said second video coding specification/format/standard.