My fiancee loves bollywood films, she’s got a dvd that has four full length films (in pretty decent video quality) on one disc. Considering tv shows usually have at most 4 hours of content on a single DVD, how is this possible? (Not double sided.)
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The specifications of the DVD and Blu-ray formats allow publishers to choose the “bitrate” of the videos they put on the disc. Using a lower bitrate creates smaller files, meaning they can fit more on the disc. The bitrate of Hollywood DVDs is usually pretty excessive – typically 35 Mbps for Blu-ray movies and 5 Mbps for DVDs. You can cut the bitrate down by 3× with a perfectly tolerable loss in quality, which is what I imagine the Bollywood studios are doing.
Also, when you don’t bother putting a handful of special features and audio tracks and stuff on a disc, that leaves more room for the actual movie(s).
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