FAQ
The relationship between the video parameters and video clarity
Qditor - Video Editor

     The parameters of the video mainly include encoding format, resolution, frame rate, bit rate which affect the clarity and the size of the video.


     Encoding formats:there are many encoding formats, in the case of technology continues to progress, resulting in a variety of encoding formats for different purposes.Compression ratio of the different encoding format is not the same, and at different bit rates ensures different picture quality.

     Resolution: we should be more familiar that the use of video file determine the size of the resolution.We should choose the appropriate resolution to improve the video file size effectively and get the best viewing.

     Frame rate: Generally speaking, as long as the frame rate of video files reaches or more than 24f / sec, can be understood as the picture smooth. If the frame rate is too low, it will inevitably lead to the not smooth visual feeling , such as FLV files provided by the common sharing site, will often feel the picture is not smooth, because the frame rate is only 12 frames / sec. As to non-smart mobile phones and other equipments, because hardware computing power is not high, the frame rate supported is generally not high, many mobile phones have only 15f/ sec , part of the phone even lower ability, so cell phone video files are generally not very fluent.When the frame rate reaches 30 frames / sec, even if very intense picture changes, the human eye can also feel very smooth. The maximum speed the human eye can perceive is 60 frames / sec.According to the definition of frame rate, we can understand that, when a certain resolution, it is assumed that to maintain the same clarity, the higher the frame rate, the smoother picture, the higher the encoding rate, so the file size is correspondingly larger.

     Bit rate: a complete video file is composed of video and audio, the general audio bit rate is 128kbps, the edit star provides the maximum video bit rate of 5000, the higher the bit rate, the greater the data transmitted, the better the video quality. Now that we have to realize the relationship between the resolution, bit rate, file size, frame rate.The greater resolution and the higher bit rate to support, so the definition will be high, while the higher the framerate, the smoother picture, but will cause the file size increasing accordingly.Therefore, according to the different uses of video files, selecting the most appropriate resolution, bit rate, frame rate is very important.


category

value

definition

File capacity

Default values

resolution

high

high

big

640*480

low

low

small

Key frame

high

low

small

10

low

high

big

Bit rate

high

high

big

2000

low

low

small

Copyright © 2014-2015 UVIC Software Technology Co.,Ltd. All Rights Reserved.

FOLLOW US