On Sat, 30 Apr 2011 19:35:20 +1200, Brian <email@example.com> wrote:
>How many minutes of 1280 x 720 (HD) video can be stored on a 4 Gb sd
>I am currently looking at still video camera's that can record HD
Not enough information.
What bitrate? (Take some sample footage and look.)
Once you get the average bit-rate that the camera uses, then it's
just a matter of simple math to figure it out. (Sample: 5mb/s is
0.625MB/s, or 3.5 megabytes/minute or about 2.2GB/hour.)
Keep in mind if your camera uses a variable bit-rate, high-detail
scenes (or scenes with a lot of movement) will use more memory.
Also make sure your SD card is fast enough to capture the
video. (Yes, speed matters.)
(And if you want to do none of the above, download the camera
manual, and they usually have some sort of general guidelines
on how much storage/minute is needed, or how many minutes of
video can be put on a particular card size...)
I have nothing important to say...