182 lines
5.8 KiB
HTML
182 lines
5.8 KiB
HTML
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<figure class="right">
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<img src="/images/edit-export-format-profile.png" alt="The 'Edit Export Format Profile' dialog">
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<figcaption>
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The 'Edit Export Format Profile' dialog
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</figcaption>
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</figure>
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<p>
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An Export Format Profile specifies the file format in which Ardour will export
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audio files, and also other audio file export options.
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</p>
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<p>
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Export Format Profiles are edited via the <kbd class="menu">Edit Export Format
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Profile</kbd> dialog.
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</p>
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<h2>Label</h2>
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<p>
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The <kbd class="menu">Label</kbd> field allows to choose the name which will be
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shown for this format in the drop-down list of export formats in the
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'File Formats' tab of the <a href="@@export-dialog">Export dialog</a>.
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</p>
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<h2>Pre-Process</h2>
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<p>
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If enabled, levels of exported files will be normalized to the level chosen here.
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The normalization can be either:
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</p>
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<ul>
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<li>Peak, which adjusts the gain to bring the highest signal peak to the
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chosen level (in <acronym title="decibels relative to full scale">dBFS</acronym>),
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</li>
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<li>Loudness, which adjusts the gain to bring the average amplitude to the
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chosen level (in <acronym title="loudness units relative to full scale">LUFS</acronym>),
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without exceeding the chosen true-peak value (in
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<acronym title="decibels true peak">dBTP</acronym>).
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EBU R128 is only available for mono or stereo sounds while true-peak works
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for any channel layout.
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</li>
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</ul>
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<h3>Trim silence at start/end</h3>
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<p>
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These checkboxes allow to remove any part Ardour considers silent (< −90dB),
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at the beginning or/and end of each exported track.
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</p>
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<h3>Add silence at start/end</h3>
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<p>
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These checkboxes allow to add silence at the beginning or/and end of each
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exported track. The duration of the added silence can be manually fixed in the
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adjacent 'timer' input fields.
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</p>
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<h2>Watermark</h2>
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<p>
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This section adds watermarks to the exported audio (e.g. for limited/demo
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distribution), by overwriting part of the audio with white noise in the
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exported file.
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</p>
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<p>
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Both the <dfn>Mode</dfn> (how often and how long) and <dfn>Noise Level</dfn>
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(how loud) can be set.
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</p>
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<h2>Format</h2>
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<h3>Compatibility</h3>
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<p>
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Selecting an item in the 'Compatibility' emphasizes the settings in the other
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columns that are compatible with the selected standard, by turning incompatible
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options red. When an incompatible quality/format/sample rate is selected, the
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compatibility column checkbox disappears.
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</p>
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<h3>Quality</h3>
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<p>
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The appropriate item in the 'Quality' column will be highlighted when a file format
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is chosen. At the moment, selecting a Quality setting does not show the
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compatible File formats.
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</p>
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<h3>File format</h3>
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<p>
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This column contains a list of Ardour's supported export file types. Selecting
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one updates the options underneath it.
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</p>
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<p>
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Note: For MP3 export Ardour relies on libsndfile v1.1.0 and newer to encode
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the file. For Opus support, Ardour requires a build of libsndfile from git
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(or future 1.2.0 release). This comes bundled with official Ardour binaries.
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</p>
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<h3>Sample rate</h3>
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<p>
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A specific sample rate can be chosen for the exported files, or the current session's
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sample rate (by choosing 'Session rate'), without sample rate conversion.
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</p>
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<h2>Encoding</h2>
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<p>
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Options relevant to the chosen file format will appear just to the right of the
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Compatibility/Quality/File format/Sample rate table.
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</p>
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<h3>Sample rate conversion quality</h3>
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<p>
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In case the chosen sample rate does not match the current session's sample rate,
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the sample rate conversion quality can be chosen here. Better quality options are
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slower.
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</p>
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<h2>Metadata</h2>
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<p>
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These options are presented whatever the chosen format is:
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</p>
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<h3>Tag file with session's metadata</h3>
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<p>
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If the exported file format supports metadata (e.g. FLAC, Ogg Vorbis), use data
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entered in the <a href="@@metadata">Session Metadata</a> window to tag the
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exported files.
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</p>
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<h3>Create CUE/TOC/chapter mark file</h3>
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<p>
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As well as exporting an audio file, Ardour can create a file (in CUE, TOC or MP4ch format
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respectively) containing CD track information, as defined in the
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<a href="@@the-ranges-and-marks-lists">Ranges & Marks List</a>.
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Those files can then be used to either burn a CD or DVD, or to create "chapters"
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inside a compatible mp4 video container.
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<h2>Post Export</h2>
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<p>
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If this is not blank, it is considered as a command to be run after the export
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of each file. Either the command must exist in $PATH, or an absolute path to
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an executable file can be specified here.
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</p>
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<p>
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Certain sequences are allowed here to stand for the exported file name and
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various parameters. Currently these are:
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</p>
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<ul>
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<li><dfn>%a</dfn>: Artist name</li>
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<li><dfn>%b</dfn>: File's base-name</li>
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<li><dfn>%c</dfn>: Copyright</li>
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<li><dfn>%d</dfn>: File's directory</li>
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<li><dfn>%f</dfn>: File's full absolute path</li>
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<li><dfn>%l</dfn>: Lyricist</li>
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<li><dfn>%n</dfn>: Session name</li>
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<li><dfn>%o</dfn>: Conductor</li>
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<li><dfn>%t</dfn>: Title</li>
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<li><dfn>%z</dfn>: Organization</li>
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<li><dfn>%A</dfn>: Album</li>
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<li><dfn>%C</dfn>: Comment</li>
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<li><dfn>%E</dfn>: Engineer</li>
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<li><dfn>%G</dfn>: Genre</li>
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<li><dfn>%L</dfn>: Total track count</li>
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<li><dfn>%M</dfn>: Mixer</li>
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<li><dfn>%N</dfn>: Timespan name</li>
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<li><dfn>%O</dfn>: Composer</li>
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<li><dfn>%P</dfn>: Producer</li>
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<li><dfn>%S</dfn>: Disc subtitle</li>
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<li><dfn>%T</dfn>: Track number</li>
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<li><dfn>%Y</dfn>: Year</li>
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<li><dfn>%Z</dfn>: Country</li>
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</ul>
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<p>
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Any part of the command-line enclosed in double-quotes (") will be used as-is.
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</p>
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<p>
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For example, exporting an mp3 file can be done by inserting <code>lame -b320 %f</code>
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which will convert the exported audio file ('%f') to a 320 kbs mp3 using the lame encoder
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(provided lame is installed first on the system).
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</p>
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