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Re: H.264 compression ratio

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Re: H.264 compression ratio
by Mike Sato on May 11, 2008 at 7:32:49 pm

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> 1. Anyone know what the approximate compression ratio is when a digital still camera uses H.264 to compress a 1280x720 video into a .mov file? <

>> Actually, thinking about it, it's impossible to answer question 1 without specific technical specifications for the camera. <<

OK. Just looking for a ballpark answer if anyone has an idea.

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> 2. If the average playback bit rate for 720x480 video on a standard DVD is 5 Mb/sec, what would the approximate MPEG-2 compression ratio be? <

>> 2. What is the format, frame size and datarate of the source you used to create the MPEG-2 and how long is it in total? <<

Say a commercial DVD movie that is 2 hours long and has wide screen or 4:3 full screen pan & scan viewing options.

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