LAME version 3.96 MMX (http://www.mp3dev.org/) usage: lame [options] [outfile] and/or can be "-", which means stdin/stdout. RECOMMENDED: lame -h input.wav output.mp3 OPTIONS: Input options: -r input is raw pcm -x force byte-swapping of input -s sfreq sampling frequency of input file (kHz) - default 44.1 kHz --bitwidth w input bit width is w (default 16) --mp1input input file is a MPEG Layer I file --mp2input input file is a MPEG Layer II file --mp3input input file is a MPEG Layer III file --nogap <...> gapless encoding for a set of contiguous files --nogapout output dir for gapless encoding (must precede --nogap) --nogaptags allow the use of VBR tags in gapless encoding Operational options: -m (s)tereo, (j)oint, (f)orce, (m)ono default is (s) or (j) depending on bitrate force = force ms_stereo on all frames. -a downmix from stereo to mono file for mono encoding --freeformat produce a free format bitstream --decode input=mp3 file, output=wav -t disable writing wav header when using --decode --comp choose bitrate to achive a compression ratio of --scale scale input (multiply PCM data) by --scale-l scale channel 0 (left) input (multiply PCM data) by --scale-r scale channel 1 (right) input (multiply PCM data) by --replaygain-fast compute RG fast but slightly inaccurately (default) --replaygain-accurate compute RG more accurately and find the peak sample --noreplaygain disable ReplayGain analysis --clipdetect enable --replaygain-accurate and print a message whether clipping occurs and how far the waveform is from full scale --preset type type must be "medium", "standard", "extreme", "insane", or a value for an average desired bitrate and depending on the value specified, appropriate quality settings will be used. "--preset help" gives more info on these Verbosity: --disptime print progress report every arg seconds -S don't print progress report, VBR histograms --nohist disable VBR histogram display --silent don't print anything on screen --quiet don't print anything on screen --brief print more useful information --verbose print a lot of useful information Noise shaping & psycho acoustic algorithms: -q = 0...9. Default -q 5 -q 0: Highest quality, very slow -q 9: Poor quality, but fast -h Same as -q 2. Recommended. -f Same as -q 7. Fast, ok quality CBR (constant bitrate, the default) options: -b set the bitrate in kbps, default 128 kbps --cbr enforce use of constant bitrate ABR options: --abr specify average bitrate desired (instead of quality) VBR options: -v use variable bitrate (VBR) (--vbr-old) --vbr-old use old variable bitrate (VBR) routine --vbr-new use new variable bitrate (VBR) routine -V n quality setting for VBR. default n=4 0=high quality,bigger files. 9=smaller files -b specify minimum allowed bitrate, default 32 kbps -B specify maximum allowed bitrate, default 320 kbps -F strictly enforce the -b option, for use with players that do not support low bitrate mp3 -t disable writing LAME Tag -T enable and force writing LAME Tag ATH related: --noath turns ATH down to a flat noise floor --athshort ignore GPSYCHO for short blocks, use ATH only --athonly ignore GPSYCHO completely, use ATH only --athtype n selects between different ATH types [0-4] --athlower x lowers ATH by x dB --athaa-type n ATH auto adjust types 1-3, else no adjustment --athaa-loudapprox n n=1 total energy or n=2 equal loudness curve --athaa-sensitivity x activation offset in -/+ dB for ATH auto-adjustment PSY related: --short use short blocks when appropriate --noshort do not use short blocks --allshort use only short blocks --cwlimit compute tonality up to freq (in kHz) default 8.8717 --notemp disable temporal masking effect --nssafejoint M/S switching criterion --nsmsfix M/S switching tuning [effective 0-3.5] --interch x adjust inter-channel masking ratio --ns-bass x adjust masking for sfbs 0 - 6 (long) 0 - 5 (short) --ns-alto x adjust masking for sfbs 7 - 13 (long) 6 - 10 (short) --ns-treble x adjust masking for sfbs 14 - 21 (long) 11 - 12 (short) --ns-sfb21 x change ns-treble by x dB for sfb21 --shortthreshold x,y short block switching threshold, x for L/R/M channel, y for S channel Noise Shaping related: --substep n use pseudo substep noise shaping method types 0-2 experimental switches: -X n[,m] selects between different noise measurements n for long block, m for short. if m is omitted, m = n -Y lets LAME ignore noise in sfb21, like in CBR -Z [n] toggles the scalefac-scale and subblock gain feature on if n is set and minus, only scalefac-scale is enabled MP3 header/stream options: -e de-emphasis n/5/c (obsolete) -c mark as copyright -o mark as non-original -p error protection. adds 16 bit checksum to every frame (the checksum is computed correctly) --nores disable the bit reservoir --strictly-enforce-ISO comply as much as possible to ISO MPEG spec Filter options: -k keep ALL frequencies (disables all filters), Can cause ringing and twinkling --lowpass frequency(kHz), lowpass filter cutoff above freq --lowpass-width frequency(kHz) - default 15% of lowpass freq --highpass frequency(kHz), highpass filter cutoff below freq --highpass-width frequency(kHz) - default 15% of highpass freq --resample sampling frequency of output file(kHz)- default=automatic ID3 tag options: --tt audio/song title (max 30 chars for version 1 tag) --ta <artist> audio/song artist (max 30 chars for version 1 tag) --tl <album> audio/song album (max 30 chars for version 1 tag) --ty <year> audio/song year of issue (1 to 9999) --tc <comment> user-defined text (max 30 chars for v1 tag, 28 for v1.1) --tn <track> audio/song track number (1 to 255, creates v1.1 tag) --tg <genre> audio/song genre (name or number in list) --add-id3v2 force addition of version 2 tag --id3v1-only add only a version 1 tag --id3v2-only add only a version 2 tag --space-id3v1 pad version 1 tag with spaces instead of nulls --pad-id3v2 pad version 2 tag with extra 128 bytes --genre-list print alphabetically sorted ID3 genre list and exit --ignore-tag-errors ignore errors in values passed for tags Note: A version 2 tag will NOT be added unless one of the input fields won't fit in a version 1 tag (e.g. the title string is longer than 30 characters), or the '--add-id3v2' or '--id3v2-only' options are used, or output is redirected to stdout. MS-Windows-specific options: --priority <type> sets the process priority: 0,1 = Low priority (IDLE_PRIORITY_CLASS) 2 = normal priority (NORMAL_PRIORITY_CLASS, default) 3,4 = High priority (HIGH_PRIORITY_CLASS)) Note: Calling '--priority' without a parameter will select priority 0. Platform specific: --noasm <instructions> disable assembly optimizations for mmx/3dnow/sse MPEG-1 layer III sample frequencies (kHz): 32 48 44.1 bitrates (kbps): 32 40 48 56 64 80 96 112 128 160 192 224 256 320 MPEG-2 layer III sample frequencies (kHz): 16 24 22.05 bitrates (kbps): 8 16 24 32 40 48 56 64 80 96 112 128 144 160 MPEG-2.5 layer III sample frequencies (kHz): 8 12 11.025 bitrates (kbps): 8 16 24 32 40 48 56 64 80 96 112 128 144 160