Category Archives : Video Quality


Why the Buzz About H.264?

H.264 Technology: It’s the bitrate! H.264 is getting so much attention because it can encode video with approximately 3 times fewer bits than comparable MPEG-2 encoders. Because H.264 is up to twice as efficient as MPEG-4 Part 2 (natural video) encoding, it has recently been welcomed into the MPEG-4 standard as Part 10 – Advanced […]

H.264 MPEG-4/AVC

CIF and 4CIF

Resolution Does Not Define Quality

The resolution is the number of pixels that “MAY” be displayed, not that “ARE” displayed. Therefore, you should think of resolution as a piece of graph paper. All you have to start with is a bunch of empty boxes; which would equate to pixels. This is the true definition of resolution. CIF resolution would be […]


CIF vs. 4CIF

So what is the difference in “potential” quality of CIF vs. 4CIF? Resolution quantifies only how close pixels or lines can be to each other and still be visibly resolved.  A 4CIF image “can” potentially produce a better quality image then a CIF image because the more pixels used to represent an image; the closer […]

CIF vs. 4CIF

h264vsmpeg41

How to Compensate for Extreme Motion

In order to compensate for extreme motion, whether it is from the movement of a camera or just plain old fast moving objects, bitrates are elevated to extreme levels to try to introduce as much information into the image as possible. Unfortunately, massive bitrates means massive file sizes and subsequent storage and processing issues. Regardless, […]


How Codecs Affect Video Quality

So if all things are equal (which is rarely the case) a higher bitrate image with a higher resolution “may” produce a higher quality image than a lower bitrate image with a lower resolution. Once we have determined bitrate the next primary factor to consider is the Codec being applied and the quality of the […]

video-icon

4CIF (Low Birate), CIF (High Birate)

Bitrate Equals Quality

What actually is a key determining factor but not the only consideration in quality is the “bitrate.” Bits are the information to be inserted into the pixels and the bitrate is the rate of time at which those bits of information are placed into the pixels. The more information or bits applied to the pixel, […]