2017-09-06 20:57:07 +00:00
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Stream descriptors
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^^^^^^^^^^^^^^^^^^
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There can be multiple *stream_descriptor* with input from the same "file" or
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multiple different "files".
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2017-10-17 22:47:43 +00:00
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Stream descriptor is of the form::
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2018-05-02 17:55:51 +00:00
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<field>=<value>[,<field>=<value>]...
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These are the available fields:
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:input (in):
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input/source media "file" path, which can be regular files, pipes, udp
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streams. See :doc:`/options/udp_file_options` on additional options for UDP
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files.
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:stream_selector (stream):
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Required field with value 'audio', 'video', 'text' or stream number (zero
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based).
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:output (out):
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Required output file path (single file).
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:init_segment:
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initialization segment path (multiple file).
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:segment_template (segment):
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Optional value which specifies the naming pattern for the segment files,
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and that the stream should be split into multiple files. Its presence should
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be consistent across streams. See
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:doc:`/options/segment_template_formatting`.
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:bandwidth (bw):
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Optional value which contains a user-specified content bit rate for the
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stream, in bits/sec. If specified, this value is propagated to (HLS)
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EXT-X-STREAM-INF:BANDWIDTH or (DASH) Representation@bandwidth and the
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$Bandwidth$ template parameter for segment names. If not specified, the
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bandwidth value is estimated from content bitrate. Note that it only affects
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the generated manifests/playlists; it has no effect on the media content
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itself.
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:language (lang):
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Optional value which contains a user-specified language tag. If specified,
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this value overrides any language metadata in the input stream.
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:output_format (format):
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Optional value which specifies the format of the output files (MP4 or WebM).
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If not specified, it will be derived from the file extension of the output
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file.
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:trick_play_factor (tpf):
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Optional value which specifies the trick play, a.k.a. trick mode, stream
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sampling rate among key frames. If specified, the output is a trick play
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stream.
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2017-10-17 22:47:43 +00:00
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.. include:: /options/drm_stream_descriptors.rst
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.. include:: /options/hls_stream_descriptors.rst
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