75 lines
2.3 KiB
HTML
75 lines
2.3 KiB
HTML
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<p>
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Ardour is capable of being used to both record and deliver MIDI "scene"
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automation. These are MIDI messages typically used to switch presets or
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"scenes" on a variety of external equipment (or software), including lighting
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and other audio/video tools. A common use case is to automatically change
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presets between songs or to change lighting conditions based on a specific
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position on the timeline.
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</p>
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<p>
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Each change from one scene to another is represented by a marker in
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the "Marker" bar.
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</p>
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<p>
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Technically, scene changes are delivered as a combination of bank and
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program change MIDI messages. MIDI allows for 16384 banks, each with
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128 programs.
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</p>
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<h2>Recording Scene Changes</h2>
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<p>
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Ardour has a dedicated MIDI port named "Scene In". Recording scene changes can
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be done by connecting this port to whatever source(s) of MIDI scene (bank/program
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change) messages should be recorded.
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</p>
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<p>
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Whenever the global record enable button is engaged and Ardour's
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transport is rolling, a new marker will be created for each scene
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change message received via the "Scene In" port.
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</p>
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<p>
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If two different scene changes are received within a certain time
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period, only the later one will be recorded as a new marker. The
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default threshold for this is 1 millisecond.
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</p>
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<p>
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If a scene change message is received while the playhead is close to
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an existing marker with an associated scene change, the recording
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process will alter the scene change in the existing marker rather than
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adding a new one. The default threshold for this "proximity" test is 1
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millisecond.
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</p>
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<h2>Manually Creating Scene Changes</h2>
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<p>
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This feature is not currently implemented.
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</p>
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<h2>Playing back Scene Changes</h2>
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<p>
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Ardour has a dedicated MIDI port named "Scene Out". Playing back scene
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changes can be done by connecting this port to whatever target(s) of MIDI
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scene (bank/program change) messages should be sent to.
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</p>
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<p>
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When the global record enable button is <em>not</em> enabled, the relevant
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message(s) will be sent via the "Scene Out" port as the playhead rolls past
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each marker with a scene change associated with it.
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</p>
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<h2>Editing Scene Changes</h2>
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<p>
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This feature is not currently implemented.
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</p>
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<h2>Disabling Scene Changes</h2>
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<p>
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This feature is not currently implemented.
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</p>
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