We have reached a point in time that consumer cameras can capture HD video. However, editing HD video it is still a source of much confusion and frustration for many people who want to ejoy the benefits of HD but run into problems with large files that their computer can't seem to play or edit.
My new camera shoots video at full HD, which means an image resolution of 1920 by 1080 pixels at 60 frames per second. Using uncompressed video would cause the memory card to fill very fast, so fast in fact that even the fastest memory cards would not be able to keep up.
To compensate for the limited amount of storage speed and space the video (and audio) is compressed. There are many different video compression algorithms in existence, they all have different properties.
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