internet connections beginning around 1998, higher quality movies began to see widespread distribution – with the release of DeCSS, ISO images copied directly from the original DVDs were slowly becoming a feasible distribution method. Today, movie sharing has become so common that it has caused major concern amongst movie studios and their representative organizations. Because of this the MPAA is often running campaigns during movie trailers where it tries to discourage people from copying material without permission. Unlike the music industry, which has had online music stores available for several years, the movie industry moved to online distribution only in 2006, after the launch of Amazon Unbox. Because of this, cameras are sometimes forbidden in movie theaters. File formats A CD software release can contain up to 700 megabytes of data, which presented challenges when sending over the Internet, particularly in the late 1990s when broadband was unavailable to most home consumers. These challenges apply to an even greater extent for a single-layer DVD release, which can contain up to 4.7 GB of data. The warez scene made it standard practice to split releases up into many separate pieces, called disks, using several file compression formats: (historical TAR, LZH, ACE, UHA, ARJ), ZIP, and most commonly RAR. The original purpose of these "disks" was so that each .rar file could fit on a single 1.44 MB 3½ inch floppy disk. With the growing size of games, this is no longer feasible, as hundreds of disks would need to be used. The average size of disks released by groups today are 50 megabytes or 100 megabytes, however it is common to find disks up to 200 megabytes. This method has many advantages over sending a single large file: The two-layer compression could sometimes achieve almost a tenfold improvement over the original DVD/CD image. The overall file size is cut down and lessens the transfer time and bandwidth required. If there is a problem during the file transfer and data was corrupted, it is only necessary to resend the few corrupted RAR files instead of resending the entire large file. This method also allows the possibility of downloading separate ‘disks’ from different sources, as an early attempt at modern segmented downloading. In the case of One-click hosting websites, downloading multiple files from one or several sources can significantly increase download speeds. This is because even if the source(s) provides slow download speeds