faad — Process an Advanced Audio Codec stream
faad [options] [-w | -o <output_filename> | -a
<output_filename>] input_filename
This utility provides a command line interface to libfaad2. This
program reads in MPEG‐4 AAC files, processes, and outputs them in
either Microsoft WAV, MPEG‐4 AAC ADTS, or standard PCM formats.
- -a
<filename>, --adtsout <filename>
- Sets the processing to output to the specified file in MPEG‐4 AAC
ADTS format
- -b <number>,
--bits <number>
- Set the output (individual) sample format. The number takes one of the
following values:
1: 16‐bit PCM data (default).
2: 24‐bit PCM data.
3: 32‐bit PCM data.
4: 32‐bit floating‐point data.
5: 64‐bit floating‐point data.
- -d , --downmix
- Set the processing to downsample from 5.1 (surround sound and bass)
channels to 2 channels (stereo).
- -f <number>,
--format <number>
- Set the output file format. The number takes one of the following
values:
1: Microsoft WAV format (default).
2: Raw PCM data.
- -g
- Set the processing to not perform gapless decoding.
- -h , --help
- Shows a usage summary.
- -i , --info
- Shows information about the about the input file.
- -l <number>,
--objecttype <number>
- Sets the MPEGpe for the processing to use. The number takes one of the
following values:
1: Main object type.
2: Low Complexity (LC) object type (default).
4: Long Term Prediction (LTP) object type.
23: Low Delay (LD) object type.
- -o
<filename>, --outfile <number>
- Sets the filename for processing output.
- -q , --quiet
- Quiet - Suppresses status messages during processing.
- -t , --oldformat
- Sets the processing to use the old MPEG‐4 AAC ADTS format when
outputting in said format.
- -w , --stdio
- Sets the processing output to be sent to the standard out.
Matthew W. S. Bell <matthew (at) bells23.org.uk>