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nrgrip(1) - rip Nero Burning ROM audio NRG images
nrgrip [-icrx] [options] <image.nrg>
nrgrip [-h | -V]
NRGrip works on a Nero Burning ROM's NRG image of an audio CD and is able to:
read and display its metadata;
extract the cue sheet;
extract the raw audio tracks as one single file, which can then be encoded by the user to a more convenient audio format such as FLAC, and possibly split according to the cue sheet.
For now, only NRG v2 is handled (not NRG v1), and not all of the metadata chunks are decoded. If you have interest in adding support for additional chunks or formats and have a test image handy, please contact the author or open an issue. In particular, it would be interesting to support ISRC/CD-Text; handling of multisession and hybrid (audio and data) discs would also be a nice feature.
At least one action switch must be provided, along with any number of option switches.
--info: display the NRG image metadata (default action)
--extract-cue: extract cue sheet from the NRG metadata
--extract-raw: extract the raw audio tracks
--extract: same as
--no-strip-subchannel: don't strip the 96-bit subchannel from the extracted audio data (this option has no effect if the input image has standard 2352-byte sector size)
The following command will display the metadata and extract both the cue sheet and the audio data:
nrgrip -ix image.nrg
The cue sheet will be extracted as
image.cue, and the audio data as
image.raw in the current directory.
The raw audio data from a CD is 16 bit, little endian, 44100 Hz, stereo. To
play it, you may use, for instance,
aplay from the ALSA utils, or
aplay -f cd image.raw ffplay -f s16le -ac 2 image.raw
Note that you can also play the NRG file directly, if the sector size is 2352 (no sub-channel).
To encode the raw audio data to FLAC (and embed the cue sheet in it):
flac --endian=little --sign=signed --channels=2 --bps=16 \ --sample-rate=44100 --cuesheet=image.cue image.raw
cuebreakpoints image.cue | shnsplit -o flac image.flac
mp3splt -c image.cue image.flac
NRGrip is written in Rust. Make sure Cargo is installed on your system, then you can install directly from the Git repository with:
cargo install --git https://code.lm7.fr/mcy/nrgrip.git
Or if you cloned the repository already:
cargo build --release cargo install
You may also generate the manpage with:
Additional information can be found on NRGrip's wiki.