On Mon, Apr 04, 2005 at 11:47:07AM -0400, Joel Anderson wrote: > Hi all, > > Could anyone share what bitrates they typically see when capturing > pure digital SD and HD signals such as via HD3000, DVB-S, or cable STB > ala firewire? I found quite a bit of info in the archives regarding > resolutions that are seen, but not much mention of the bitrates. > > Really I'm trying to figure out what kind of file sizes would be > typical of such recordings, to plan for drive space and other hardware > considerations.
1080i recordings, around 6 to 7 gigabytes per hour. 720p recordings, sometimes 6 gb/hour (60fps), sometimes just 3.5 gb/hour (presumably 24fps ones) DTV STDV recordings -- can vary a lot, but often aruond 1.6 gb/hour Transcode 1080i HD recordings to 1280x540px30fps in mpeg 4, thus holding 75% of the pixels of 1280x720 (my tv's native resolution) -- as little as 1.4gb per hour and still looks pretty good. The 540 lines is to allow trivial de-interlace.
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