On Tue, May 29, 2007 at 08:49:27AM -0700, [EMAIL PROTECTED] wrote: > Does anyone know who much data 1 hr. of HDTV produces? Let's try 720 for
http://www.dv.com/columns/columns_item.php?articleId=55301757 says Originally, 1080 was designed as an interlaced format, and its highest frame rate at present is 60i. As shot by the Sony CineAlta, 1080p is recorded and displayed using interlaced hardware that uses segmented-frame techniques. To record slower rates, the tape transport is slowed down; 1080p24 is recorded as if it were 1080i48, with the pleasant side effect that you can record about 20 percent longer on the same size tape. The data rate for uncompressed 4:2:2 1080i60 or 1080p30 is about 1.2 Gbps. The highest frame rate for 720, which is always progressive, is 60 fps: 720p60. Sixty full frames a second provides smooth motion imaging for sports and allows slow-mo with no vertical bobble from deinterlacing. Slower frame rates are possible too, like 720p30 and 720p24, (although Panasonic's variable-frame-rate Varicam simply repeats frames as needed to convert whatever frame rate it's shooting into a steady 60p for recording on tape or spitting out as HD-SDI). The data rate for uncompressed 4:2:2 720p60 is also about 1.2 Gbps. http://en.wikipedia.org/wiki/1080p Production standards A new high-definition progressive scan format for picture creation is currently being developed to operate at 1080p at 50 or 60 frames per second.[2][3] This format will require a whole new range of studio equipment including cameras, storage, edit and contribution links as it has doubled the data rate of current 50 or 60 field interlace 1920 × 1080 from 1.485 Gb/s to nominally 3 Gb/s. It is unable to be broadcast in a compressed transmission to current MPEG-2 based HD receivers. This format will improve final pictures because of the benefits of "oversampling" and removal of interlace artifacts. > now and perhaps 1080. I'm looking for the file size if you store the whole thing > in a single file. You were thinking about using a cluster for rendering or transcoding, right? _______________________________________________ Beowulf mailing list, [email protected] To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
