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# Ripping
## Media
[Main source](https://arstechnica.com/civis/threads/ripping-optical-media.1507399/post-43734994).
### Audio CD
About 200-300 MB per album CD when ripped to FLAC.
### DVD
About 4-8 GB per disc, averaging 5.6 GB per movie as ISO.
### Blu-ray
About 20-50 GB per disc, averaging 37 GB per movie as ISO.
## Hardware
### Reader
I got a Verbatim external USB Blu-ray writer for about 120€.
### Storage
See <https://diskprices.com/>.
## Software
### Audio
* [abcde](https://abcde.einval.com/wiki/) claims to rip and compress to FLAC and tag automatically.
### Video
You can use `dd` to rip DVD and Blu-ray.
However, `dd` can fail on some disks, perhaps due to damage or copy protection.
[This post on unix.stackexchange describes a trick that works](https://unix.stackexchange.com/a/642790):
* Start playback of the disc using [VLC media player](https://www.videolan.org/vlc/).
* Try `dd` first, if it fails, then run a command like `ddrescue -n -b2048 -K1M /dev/sr0 x.iso x.map`.
* After `ddrescue` starts running, quit VLC.
[FindVUK](http://fvonline-db.bplaced.net/) has the keys to rip Blu-ray discs.
However, with encrypted Blu-ray discs, you need to configure the keys in each device where you want to play back the content.
[blu-save](https://git.sr.ht/~shironeko/blu-save) can remove the encryption, so that you can play `BDMV/STREAM/*.m2ts` with VLC without setting up the keys, but VLC cannot play the disc without the keys (!)
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