10-13-2015
Need a script for automation the convert a lot number audio files to another format
I have a lot number audio files in the MP3 proprietary format, I want to convert them to 'opus' the free and higher quality format, with keep metadata also.
My selection command-line programs are SoX (Sound eXchange) for convert MP3 files to 'AIFF' format in order to keep quality and metadata* and 'opusenc'[1] the official encoder for convert 'AIFF' files to 'opus' format. Most important part of the work is use of 'mediainfo' program for exporting metadata tags of MP3 files and giving them to 'opusenc' program for importing metadata tags to encoding opus files, also giving the bit-rate value of original MP3 files to 'opusenc' for encoding large size AIFF files in order to achieve the opus files with same bit-rate of original MP3 files, so I need a script for automation listed below operations:
1. Use sox for convert MP3 files in a directory with many sub-directory to the files with AIFF format with same name.
2. Use 'mediainfo' for exporting metadata tags (Album, Performer, Track name, Recorded date, Genre) and bit-rate value of original MP3 files.
3. Giving the previous step information to 'opusenc' (artist, title, album, date YYYY-MM-DD, genre)[1] and run it.
4. Delete MP3 and AIFF files after encode successfully done.
I want mentioned operations run consecutive on directories one by one.
My goal of this work is achieve to more freedom. Thank you very much for help and time that you devote to this work.
*: I choose AIFF format because it supports ID3v2 tags but when for test I convert a MP3 file contains metadata to 'AIFF' format with 'SoX' program and convert it to 'opus' with 'opusenc', result was the output opus file lacks metadata (don't known what is the problem exactly) also there was need to specify bit-rate value of MP3 file, so use of 'mediainfo' is necessary.
[1]: https://mf4.xiph.org/jenkins/view/opus/job/opus-tools/ws/man/opusenc.html
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LEARN ABOUT DEBIAN
normalize-mp3
NORMALIZE-MP3(1) General Commands Manual NORMALIZE-MP3(1)
NAME
normalize-mp3 - adjust levels of mp3 or ogg files by running normalize-audio(1), then re-encoding
SYNOPSIS
normalize-mp3 [OPTION]... [FILE]...
normalize-ogg [OPTION]... [FILE]...
DESCRIPTION
Normalize volume of mp3 or ogg files by decoding, running normalize, and re-encoding. This requires as much extra disk space as the
largest mp3 or ogg file, decoded. Note that for batch and mix mode, all files must be decoded, so there must be enough disk space for the
decoded copies of all specified mp3 and ogg files.
--ogg Convert files to OGG, regardless of original format
--mp3 Convert files to MP3, regardless of original format
--bitrate BR
Set bitrate of re-encoded file (default 128)
--tmpdir TMP
Put temporary WAV files in temp directory TMP
--notags
Do not copy ID3 or OGG tags to the output file
The following four options may be used to set the encoder and decoder commands for mp3 and ogg vorbis. %m is expanded to the name of the
mp3 or vorbis file, %w expands to the name of the temporary WAV file, and %b expands to the bitrate, as specified by the --bitrate option.
Run normalize-mp3 with no arguments to see the default values.
--mp3encode=X
mp3 encoder
--mp3decode=X
mp3 decoder
--oggencode=X
ogg vorbis encoder
--oggdecode=X
ogg vorbis decoder
-h Display this help and exit.
-V Display version information and exit.
These arguments are passed as arguments to normalize-audio.
Run "normalize-audio --help" for more info.
-a AMP
-g ADJ
-n
-T THR
-b
-m
-v
-q
REPORTING BUGS
Report bugs to <chrisvaill@gmail.com>.
SEE ALSO
The normalize-audio(1) Man page
NOTES
This page was provided by Eduardo Macan <macan@debian.org>
September 2001 NORMALIZE-MP3(1)