When transferring and processing stored material from a camcorder disk to a computer, users often worry about the digital video quality. Even if chances of deterioration are lower with digital materials, there were cases when digital video quality was impaired during these operations. Some applications even require an evaluation of the digital video quality.

According to expert criteria, you can evaluate the digital video quality by analyzing different sequences from the database. From this perspective, the dynamic features of the input video signal with the motion and the spatial dimension influence the performance of a certain system. The objective approximation of digital video quality is performed by mathematical models based on metrics. When such data is introduced in a computer program, it can then be measured and reported objectively.

Among the traditional ways of determining digital video quality we can mention the peak signal-to-noise ratio or the simple signal-to-noise ratio; multimedia applications use both types of services for very practical and relevant results. More tests are sometimes needed to determine the digital video quality for compression-decompression. Such tests are usually impractical and time consuming, and they have no relevance for the average consumer.

Besides the objective analysis of digital video quality, anyone can pass a subjective judgment. Normally, a trained expert should judge the parameters, yet it is common practice to take a group of experiments and show them several video sequences. The evaluation is performed per sequence and the reactions and opinions are recorded for analysis. Normally, quality digital video camera is superior to analog videos because of the higher number of pixels. And the quality is all the more relevant for larger visuals than for smaller ones.

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