2012-12-28 01:00:35 +00:00
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Audioextract
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============
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Extract audio files that are embedded within other files.
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2012-12-28 17:23:27 +00:00
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Setup
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-----
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make
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make install PREFIX=/usr
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2013-01-03 06:18:44 +00:00
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Cross compile for Windows:
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make
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make install TARGET=win32
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Or:
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make
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make install TARGET=win64
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Note that 32bit binaries can only read files up to about 4 GB
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because of memory limitations of the 32bit address space. 64bit
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binaries can read up to about 16 EB (16 Exabyte).
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2012-12-28 01:00:35 +00:00
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Usage
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-----
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2012-12-28 03:43:07 +00:00
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audioextract [option...] <filename> [<filename> ...]
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2012-12-28 01:00:35 +00:00
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2012-12-28 03:47:37 +00:00
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### Examples
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2012-12-28 03:56:02 +00:00
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Extract .wav, .aif and .ogg (might actually be .flac, .opus or .ogm) files from
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the file `data.bin` and store them in the `~/Music` directory.
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2012-12-28 03:47:37 +00:00
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audioextract -f wave,ogg -o ~/Music data.bin
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2012-12-31 20:02:57 +00:00
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This will then write files like such into `~/Music`:
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data.bin_00000000.ogg
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data.bin_00FFB2E3.wav
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data.bin_01F3CD45.aif
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The hexadecimal number in the written file names give the offset where in the
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data file the audio file was found.
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2012-12-29 16:50:22 +00:00
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Extract .mp3, .mp2 and .mp1 files (with or without ID3v2 tags). The `mpg123`
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option yields a lot of false positives because there is no nice way to
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unambigiously detect MPEG files. These false positives are however usually very
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small, so using the `--min-size` one can hopefully extract only real MPEG files.
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2012-12-28 03:56:02 +00:00
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2012-12-29 16:50:22 +00:00
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audioextract -f id3v2,mpg123 --min-size 100k -o ~/Music data.bin
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2012-12-28 03:56:02 +00:00
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2012-12-28 01:00:35 +00:00
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### Options
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-h, --help Print this help message.
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2012-12-28 03:43:07 +00:00
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-q, --quiet Do not print status messages.
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2012-12-28 01:00:35 +00:00
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-f, --formats=FORMATS Comma separated list of formats (file magics) to extract.
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2012-12-31 20:02:57 +00:00
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2012-12-28 01:00:35 +00:00
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Supported formats:
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2012-12-28 03:43:07 +00:00
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all all supported formats
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2013-01-01 05:41:01 +00:00
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default the default set of formats (AIFF, ASF, BINK, ID3v2, IT,
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2013-01-02 03:31:45 +00:00
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MIDI, MP4, Ogg, RIFF, S3M, XM)
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2012-12-28 03:43:07 +00:00
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aiff big-endian (Apple) wave files
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2012-12-31 20:02:57 +00:00
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asf Advanced Systems Format files (also WMA and WMV)
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2013-01-01 05:41:01 +00:00
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bink BINK files
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2013-01-01 02:27:33 +00:00
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id3v2 MPEG layer 1/2/3 files with ID3v2 tags
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2012-12-29 05:31:30 +00:00
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it ImpulseTracker files
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2012-12-28 17:23:27 +00:00
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midi MIDI files
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2012-12-29 05:31:30 +00:00
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mod FastTracker files
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2013-01-01 02:27:33 +00:00
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mpg123 MPEG layer 1/2/3 files (MP1, MP2, MP3)
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2012-12-31 20:02:57 +00:00
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mp4 MP4 files (M4A, M4V, 3GPP etc.)
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2013-01-03 06:18:44 +00:00
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ogg Ogg files (Vorbis, Opus, Theora, etc.)
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2013-01-01 02:27:33 +00:00
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riff Resource Interchange File Format files (ANI, AVI, MMM,
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PAL, RDI, RMI, WAV)
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2012-12-29 06:53:46 +00:00
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s3m ScreamTracker III files
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2013-01-02 03:31:45 +00:00
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xm Extended Module files
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tracker all tracker files (MOD, S3M, IT, XM)
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2012-12-28 01:00:35 +00:00
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2012-12-29 16:50:22 +00:00
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WARNING: Because MP1/2/3 files do not have a nice file magic, using
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the 'mpg123' format may cause *a lot* of false positives. Nowadays
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2012-12-28 01:00:35 +00:00
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MP3 files usually have an ID3v2 tag at the start, so using the
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'id3v2' format is the better option anyway.
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2012-12-29 06:53:46 +00:00
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The detection accuracy of MOD files is not much better and thus
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2013-01-01 02:27:33 +00:00
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they are also per default disabled.
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2012-12-29 06:53:46 +00:00
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2012-12-29 16:50:22 +00:00
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NOTE: When using only the 'mpg123' format but not 'id3v2' any ID3v2
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2012-12-28 01:00:35 +00:00
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tag will be stripped. ID3v1 tags will still be kept.
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If '-' is written before a format name the format will be
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removed from the set of formats to extract. E.g. extract
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2013-01-01 02:27:33 +00:00
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everything except tracker files:
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2012-12-28 01:00:35 +00:00
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2013-01-01 02:27:33 +00:00
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audioextract --formats=all,-tracker data.bin
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2012-12-28 01:00:35 +00:00
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-o, --output=DIR Directory where extracted files should be written. (default: ".")
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2012-12-28 04:46:44 +00:00
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-m, --min-size=SIZE Minumum size of extracted files (skip smaller). (default: 0)
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-x, --max-size=SIZE Maximum size of extracted files (skip larger).
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2012-12-28 03:43:07 +00:00
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(default: max. possible size_t value)
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The last character of SIZE may be one of the following:
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B (or none) for bytes
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k for Kilobytes (units of 1024 bytes)
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M for Megabytes (units of 1024 Kilobytes)
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G for Gigabytes (units of 1024 Megabytes)
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T for Terabytes (units of 1024 Gigabytes)
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