************************************************************* * * * Nero Digital Audio Reference MPEG-4 & 3GPP Audio Encoder * * Copyright 2007 Nero AG * * All Rights Reserved Worldwide * * * * Package build date: Aug 6 2007 * * Package version: 1.1.34.2 * * * * See -help for a complete list of available parameters. * * * ************************************************************* Usage: neroAacEnc [options] -if <input-file> -of <output-file> Where: <input-file> : Path to source file to encode. The file must be in Microsoft WAV format and contain PCM data. Specify - to encode from stdin. <output-file> : Path to output file to encode to, in MP4 format. ==== Available options: ==== Quality/bitrate control: -q <number> : Enables "target quality" mode. <number> is a floating-point number in 0...1 range. -br <number> : Specifies "target bitrate" mode. <number> is target bitrate in bits per second. -cbr <number> : Specifies "target bitrate (streaming)" mode. <number> is target bitrate in bits per second. When neither of above quality/bitrate options is used, the encoder defaults to equivalent of -q 0.5 Multipass encoding: -2pass : Enables two-pass encoding mode. Note that two-pass more requires a physical file as input, rather than stdin. -2passperiod : Overrides two-pass encoding bitrate averaging period, <number> : in milliseconds. : Specify zero to use least restrictive value possible (default). Advanced features / troubleshooting: -lc : Forces use of LC AAC profile (HE features disabled) -he : Forces use of HE AAC profile (HEv2 features disabled) -hev2 : Forces use of HEv2 AAC profile Note that the above switches (-lc, -he, -hev2) should not be used; optimal AAC profile is automatically determined from quality/bitrate settings when no override is specified. -ignorelength : Ignores length signaled by WAV headers of input file. Useful for certain frontends using stdin.
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