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Diffstat (limited to 'audio/mp3encode/pkg-descr')
-rw-r--r-- | audio/mp3encode/pkg-descr | 53 |
1 files changed, 20 insertions, 33 deletions
diff --git a/audio/mp3encode/pkg-descr b/audio/mp3encode/pkg-descr index 40ee034416eb..d4accf700faa 100644 --- a/audio/mp3encode/pkg-descr +++ b/audio/mp3encode/pkg-descr @@ -1,37 +1,24 @@ -INTRODUCTION -============ -mp3encode is a package for encoding MPEG layer I, II and III audio -files. This is the reference implementation so don't expect -spectacular performance. - -Driving encode is pretty simple although it may take some practice to -work out an optimal compression rate. AIFF files are the only type of -files that seem to work with this version so you may need to install a -port like "sox" to convert your file types. I use the "nas" port to -record and edit all of my audio files but so long as you have a valid -AIFF file it shouldn't matter what you use. - -Although the source code includes a decoder I have decided not to port -it because we already have a couple of top class mpeg decoders in the -ports collection. - -HINTS & TIPS -============ -Physcoacoustic model 2 is the only supported model in layer III -encoding. A bit-rate of 128Kbps is adequate for most forms of music but -you may need to turn down the compression to 160Kbps if the music is + The mp3encode package encodes MPEG layer I, II and III audio files. +This is the reference implementation so don't expect spectacular performance. + Driving encode is pretty simple although it may take some practice to +work out an optimal compression rate. AIFF files are the only type of files that +seem to work with this version so you may need to install a port like "sox" to +convert your file types. I use the "nas" port to record and edit all of my audio +files but so long as you have a valid AIFF file it shouldn't matter what you +use. + Although the source code includes a decoder I have decided not to port +it because we already have a couple of top class MPEG decoders in the ports +collection. + Psychoacoustic model 2 is the only supported model in layer III +encoding. A bit-rate of 128 kilobits/s is adequate for most forms of music but +you may need to turn down the compression to 160 kilobits/s if the music is particularly atmospheric. - -Vocal spoken recordings are best encoded using a 32Kbps bit-rate with -layer II (layer III makes you sound like a Dalek under digital water) -with a 32kHz sample rate in mono. Using this method I have managed to -get about 5 minutes of AM Radio quality audio into around 1 MB. - -MISC -==== -If anyone finds any bugs in this software please let me know and -include patches to fix them. + Vocal spoken recordings are best encoded using a 32 kilobits/s bit-rate +with layer II (layer III makes you sound like a Dalek under digital water) with +a 32 kHz sample rate in mono. Using this method I have managed to get about 5 +minutes of AM radio quality audio into around 1 MB. + If anyone finds any bugs in this software please let me know and include +patches to fix them. Share and enjoy, - Joel... |