Video and DVD businesses typically sell or hire recorded films, television programmes, documentaries, music performances and other entertainment on physical media. Stock may include new and second-hand DVDs, Blu-ray discs and, where available, older video formats. Some shops also offer blank discs, cases, cleaning products and related accessories. Customers may be able to browse by genre, age rating, format or subject, and some businesses accept trade-ins or buy used discs. Services vary by business and may include short-term rentals, pre-ordering forthcoming releases, sourcing titles that are not held in stock, or supplying boxed sets and collector's editions. Certain outlets also transfer home recordings between formats or copy material where copyright and other legal requirements permit.