# 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 . ## 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/) * Run a command like `ddrescue -n -b2048 -K1M /dev/sr0 x.iso x.map` * After `ddrescue` starts running, pause playback. [FindVUK](http://fvonline-db.bplaced.net/) has the keys to rip Blu-ray discs.