forked from len0rd/rockbox
754b1572fb
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29986 a1c6a512-1295-4272-9138-f99709370657
28 lines
1.3 KiB
TeX
28 lines
1.3 KiB
TeX
\subsection{MP3 Encoder}
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This plugin encodes a \fname{.wav} file to MP3 format. The supported
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input format is uncompressed, linear PCM with 16 bit per sample and a maximum
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of 2 channels. Allowed sample rates are 16, 22.05, 24, 32, 44.1 and 48~kHz.
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The user will be asked to select the desired output bitrate of the compressed
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MP3 file.
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\begin{description}
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\item[Select Bitrate] The following bitrates can be selected: 64, 80, 96, 112,
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128, 160, 192, 224, 256, 320~kbps.
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Remark: Bitrates above 160~kbps cannot be used in MPEG~2 Layer~3 bitstreams.
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The encoder plugin automatically limits the output bitrate to 160~kbps for
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input files with a sample rate of 16, 22.05 or 24~kHz. The same limitation is
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valid for mono files.
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\end{description}
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The output \fname{.mp3} file is written to the same path as the \fname{.wav}
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file using the same filename. To use this plugin, open the \setting{Context Menu}
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(see \reference{ref:Contextmenu}) on a \fname{.wav} file and select
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\setting{Open With\dots $\rightarrow$ mp3\_encoder}.
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\note{
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The encoder will choose the appropriate bitstream format from the sample rate
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of the input file. The output bitstream format is MPEG~1 Layer~3 for 32, 44.1
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and 48~kHz, and MPEG~2 Layer~3 for 16, 22.05 and 24~kHz. MPEG~2.5 Layer~3 is
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not supported.
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}
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