Method, apparatus, and medium for video processing
Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: receiving, at a first device, a metadata file from a second device; and determining a descriptor in a data set in the metadata file, a presence of the descriptor indicating that a representation in the data set is an external stream representation (ESR).
1 . A method for media streaming, comprising:
receiving, at a first device, a metadata file from a second device; and
determining whether an external stream representation (ESR) descriptor is present in a data set in the metadata file, a presence of the ESR descriptor indicating that a representation in the data set is an external stream representation (ESR), wherein the ESR is associated with a main stream representation (MSR) through a set of representation-level attributes in the MSR.
2 . The method of claim 1 , wherein the ESR descriptor is defined as a data structure with an attribute equal to a uniform resource name (URN) string.
3 . The method of claim 2 , wherein the metadata file is a media presentation description (MPD), and the data structure is EssentialProperty in the MPD.
4 . The method of claim 3 , wherein the attribute is a schemeldUri attribute, and the URN string is “urn:mpeg:dash:esr:2022”.
5 . The method of claim 1 , wherein the data set is an adaptation set.
6 . The method of claim 1 , wherein the set of representation-level attributes comprise an associationId attribute and an associationType attribute.
7 . The method of claim 6 , wherein an id attribute of the ESR is referred to by a value contained in the associationId attribute for which a value in the association Type attribute is equal to “aest”.
8 . A method for media streaming, comprising:
determining, at a second device, whether to incorporate an ESR descriptor into a data set in a metadata file, a presence of the ESR descriptor indicating that a representation in the data set is an ESR, wherein the ESR is associated with a main stream representation (MSR) through a set of representation-level attributes in the MSR;
generating the metadata file based on the determining; and
transmitting the metadata file to a first device.
9 . The method of claim 8 , wherein the ESR descriptor is defined as a data structure with an attribute equal to a uniform resource name (URN) string.
10 . The method of claim 9 , wherein the metadata file is a media presentation description (MPD), and the data structure is EssentialProperty in the MPD.
11 . The method of claim 10 , wherein the attribute is a schemeldUri attribute, and the URN string is “urn:mpeg:dash:esr:2022”.
12 . The method of claim 8 , wherein the data set is an adaptation set.
13 . The method of claim 8 , wherein the set of representation-level attributes comprise an associationId attribute and an association Type attribute.
14 . The method of claim 13 , wherein an id attribute of the ESR is referred to by a value contained in the associationId attribute for which a value in the association Type attribute is equal to “aest”.
15 . An apparatus for media streaming comprising a processor and a non-transitory memory with instructions thereon, wherein the instructions upon execution by the processor, cause the processor to perform acts comprising:
receiving, at a first device, a metadata file from a second device; and
determining whether an external stream representation (ESR) descriptor is present in a data set in the metadata file, a presence of the ESR descriptor indicating that a representation in the data set is an external stream representation (ESR), wherein the ESR is associated with a main stream representation (MSR) through a set of representation-level attributes in the MSR.
16 . A non-transitory computer-readable storage medium storing instructions that cause a processor to perform acts comprising:
receiving, at a first device, a metadata file from a second device; and
determining whether an external stream representation (ESR) descriptor is present in a data set in the metadata file, a presence of the ESR descriptor indicating that a representation in the data set is an external stream representation (ESR), wherein the ESR is associated with a main stream representation (MSR) through a set of representation-level attributes in the MSR.
17 . An apparatus for media streaming comprising a processor and a non-transitory memory with instructions thereon, wherein the instructions upon execution by the processor, cause the processor to perform acts comprising:
determining, at a second device, whether to incorporate an ESR descriptor into a data set in a metadata file, a presence of the ESR descriptor indicating that a representation in the data set is an ESR, wherein the ESR is associated with a main stream representation (MSR) through a set of representation-level attributes in the MSR;
generating the metadata file based on the determining; and
transmitting the metadata file to a first device.
18 . A non-transitory computer-readable storage medium storing instructions that cause a processor to perform acts comprising:
determining, at a second device, whether to incorporate an ESR descriptor into a data set in a metadata file, a presence of the ESR descriptor indicating that a representation in the data set is an ESR, wherein the ESR is associated with a main stream representation (MSR) through a set of representation-level attributes in the MSR;
generating the metadata file based on the determining; and
transmitting the metadata file to a first device.