AtOM: Anything to Ogg and Mp3 URL: http://gitorious.org/atom Author: Vincent Riquer Copyright/left: 2012-2013 Vincent Riquer - GPLv3 (see doc/GPL-3) except: transogg: WTFPL 2.0 ============ Dependencies ------------ Required: * bash (>= 4.0) http://www.gnu.org/software/bash/bash.html * SoX http://sox.sourceforge.net/ * SQLite http://www.sqlite.org/ Optional: * vorbis-tools http://www.vorbis.com/ * ogginfo (Ogg Vorbis metadata) * oggenc (Ogg Vorbis encoding) * opus-tools http://opus-codec.org/ * opusinfo (Opus metadata) * opusenc (Opus encoding) * opusdec (Opus decoding) * LAME MP3 Encoder http://lame.sourceforge.net/ * lame (MP3 encoding) * FLAC http://flac.sourceforge.net/ * metaflac (FLAC metadata) * Musepack http://www.musepack.net/ * mpcdec (Musepack decoding) * FFmpeg http://ffmpeg.org/ * ffprobe (ID3v2, Musepack, Windows Media and video metadata) * ffmpeg (Windows Media and video decoding) ================== Using the software ------------------ Configuration: -------------- Please read doc/config before anything else. Preparing data: --------------- Nothing specific needs to be done. You can edit ypur tags, rename files, move them around how you see fit. However, make sure you setup your tag editor to *do* update the files' timestamps: though it was initially plan to make this optional, using checksums or tags, it was abandoned due to the huge amount of IO required. Running: -------- Make sure your configuration is correct by running $ atom -C This will produce a human-readable dump of your current configuration. If all settings are correct, simply run atom with no argument. Go get a beer. Meet some friends. Go to bed. Depending on the size of your collection, the first run can take hours, even days. After adding/tagging/renaming/deleting files, just re-run atom. It should be much faster this time, as only changed data will be treated. If, for whatever reason, you need to force the regeneration of a destination, after changing the quality settings for example, run $ atom -F ================= Technical details ----------------- I. Source scan -------------- After reading its configuration file, AtOM uses find to get a list of all files in the source directory. Each file is checked against the database. If it's already there, and its last modification time is unchanged, the last_seen field is updated, and that's all. If its mtime has changed, mime-type scan is attempted. It is updated in the database, along with last_seen. If the file is new, its mime-type is scanned, and it is added to the database. II. Obsolete files ------------------ Using the last_seen field, AtOM removes from destinations each files which are not present anymore in the source directory. AtOM never touches files not present in its database (unless there is a filename conflict, in which case your file *WILL* be overwritten). If you wish to clear unknown files from your destinations, have a look at toys/cleandestinations. III. Reading metadata --------------------- AtOM then tries to read metadata from each new or changed file. It also re-reads metadata from files scanned with an older version of AtOM, if the parser for that format has changed. The actual data read depends on the format, but at the very least, AtOM should identify the sampling rate, bitrate and number of channels. Unknown file types are scanned with ffprobe, so you may still have some luck, depending on your FFmpeg setup. IV. Task creation ----------------- V. Transcoding -------------- VI. Copies ---------- VII. Obsolete files 2 ------------------- ==== Toys ---- AtOM requires a database to function. Now that we have a database containing various information about our media files, why not use it? AtOM comes with a small set of tools in the toys/ directory. These are documented in toys/README. ======================== Shameless Self Promotion ------------------------ I am the author of free (Creative Commons CC-By-SA) music which you can stream for free, or buy to get high quality and bonuses from Bandcamp (http://djblackred.bandcamp.com). If you like electronic music taking its inspiration from Trance, Drum & Bass, Ambient and (rarely) Free Jazz, please check it out! Downloads are available in FLAC, Ogg, MP3, and more, and includes the "source code" (sequencer files and the likes) for most tracks. I am receiving 85% of the money you'll spend, so you won't be feeding some greedy BigCorp producer or distributor. And if you don't like it, you can still spread the word to friends who may like. You can see this as a way to thank me for this piece of code. ===== Legal ----- Some of the format and/or tool names cited above are trademarks belonging to their rightful owners. AtOM and its authors are not linked in any way to those companies or individuals. Said companies do not endorse nor support AtOM in any way.