FLVmeta must allow the injection of AMF0 metadata directly into any random point in a FLV file, using an XML file as input.
Just like the --update command, if only one file is specified, it is updated in-place, whereas specifying a second file leaves the original file untouched.
The XML file contains not only AMF0 metadata as specified by the amf0.xsd schema, but also directives allowing to specify the action to apply.
Allowed actions are:
insert: to insert a metadata tag at the given position
replace: to replace an existing metadata tag with the data from the XML file
delete: to delete metadata from the FLV file
update: to add values to an existing metadata tag, with the constraint that the existing metadata are an associative array or an object.
Several such actions are permitted in one XML file.
Each action operates either on a decimal address in the file, exactly representing the offset of an existing tag, either on a decimal timestamp in milliseconds, either on the name of a metadata tag which must exist in the FLV file (only the first one matches, unless a "match all" attribute is present), either with the special name EOF representing the end of the file.
In order to create entirely correct FLV files, meaning with well calculated metadata, flvmeta then invokes itself recursively at the end of the operation with an update command in order to recompute the onMetadata tag, with the --preserve option used in order not to lose any metadata inserted by the previous operation.
The new command --inject/ -I is used by specifying an optional argument, the name of the XML file containing metadata to inject. Alternatively, XML metadata can be read on stdin.
FLVmeta must allow the injection of AMF0 metadata directly into any random point in a FLV file, using an XML file as input.
Just like the
--updatecommand, if only one file is specified, it is updated in-place, whereas specifying a second file leaves the original file untouched.The XML file contains not only AMF0 metadata as specified by the amf0.xsd schema, but also directives allowing to specify the action to apply.
Allowed actions are:
Several such actions are permitted in one XML file. Each action operates either on a decimal address in the file, exactly representing the offset of an existing tag, either on a decimal timestamp in milliseconds, either on the name of a metadata tag which must exist in the FLV file (only the first one matches, unless a "match all" attribute is present), either with the special name EOF representing the end of the file.
In order to create entirely correct FLV files, meaning with well calculated metadata, flvmeta then invokes itself recursively at the end of the operation with an update command in order to recompute the
onMetadatatag, with the--preserveoption used in order not to lose any metadata inserted by the previous operation.The new command
--inject/-Iis used by specifying an optional argument, the name of the XML file containing metadata to inject. Alternatively, XML metadata can be read on stdin.Examples:
flvmeta --inject metadata.xml input.flv output.flvflvmeta -I input.flv < metadata.xml