Table 281 – Entries in a media duration dictionary

Key

Type

Value

Type

name

(Optional) The type of PDF object that this dictionary describes; if present, shall be MediaDuration for a media duration dictionary.

S

name

(Required) The subtype of media duration dictionary. Valid values are:

IThe duration is the intrinsic duration of the associated media

FThe duration is infinity

TThe duration shall be specified by the T entry

The media duration dictionary shall be considered non-viable if the conforming reader does not recognize the value of this entry.

T

dictionary

(Required if the value of S is T; otherwise ignored) A timespan dictionary specifying an explicit duration (see Ta b l e 289 ). A negative duration is illegal.