52 lines
2.3 KiB
ReStructuredText
52 lines
2.3 KiB
ReStructuredText
Segment template formatting
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^^^^^^^^^^^^^^^^^^^^^^^^^^^
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The implementation is based on *Template-based Segment URL construction*
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described in ISO/IEC 23009-1:2014.
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.. table:: Supported identifiers
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============== ============================== ==============================
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$<Identifier>$ Substitution parameter Format
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============== ============================== ==============================
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$$ is an escape sequence, i.e. Not applicable.
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"$$" is replaced with a single
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"$".
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$Number$ This identifier is substitued The format tag may be present.
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with the *number* of the
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corresponding Segment. If no format tag is present, a
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default format tag with
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*width*\=1 shall be used.
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$Time$ This identifier is substituted The format tag may be present.
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with the value of the
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**SegmentTimeline@t** If no format tag is present, a
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attribute for the Segment default format tag with
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being accessed. Either *width*\=1 shall be used.
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$Number$ or $Time$ may be used
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but not both at the same time.
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============== ============================== ==============================
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.. note::
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Identifiers $RepresentationID$ and $Bandwidth$ are not supported in this
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version. Please file an `issue
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<https://github.com/google/shaka-packager/issues>`_ if you want it to be
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supported.
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In each URL, the identifiers shall be replaced by the substitution parameter
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per the definition in the above table. Identifier matching is case-sensitive.
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Each identifier may be suffixed, within the enclosing '$' characters, with an
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additional format tag aligned with the *printf* format tag as defined in IEEE
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1003.1-2008 following this prototype::
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%0[width]d
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The *width* parameter is an unsigned integer that provides the minimum number
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of characters to be printed. If the value to be printed is shorter than this
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number, the result shall be padded with zeros. The value is not truncated even
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if the result is larger.
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Strings outside identifiers shall only contain characters that are permitted
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within URLs according to RFC 3986.
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