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What is the Appropriate Bitrate Setting for H.264 Output

What is Video Bitrate

Video bitrate is the number of bits per second output from video data (video color quantity, brightness measurement, pixel quantity), and the usual unit of video bitrate is kbps.

The Necessity of Setting Appropriate Video Bitrate

In the application of video conference, the quality of video and the network bandwidth occupation are contradictory. Normally, the video streaming occupying more bandwidth gets higher quality. Therefore, the high quality of video requires high network bandwidth. The way to solve the contradiction is video coding technology. To judge the advantages and disadvantages of a video coding-decoding technology, on one hand, we can compare which video's quality is better based on the same network; on the other hand, we can compare which video occupies less room on the basis of the same quality.

However, do videos with higher bitrate get high quality? In theory, it's true. Yet in the range of visual resolution, when the bit rate is high enough, it doesn't seem to make a difference. Therefore, the bitrate does have its optimal value. In the documentation of h.264 (also known as AVC or x.264), the recommended bitrate of H.264 video is as follows:

Suggested bitrates for different video resolutions with H.264 Encoding

Resolution Suggested Bitrate
480P 720 x 480 1800Kbps
720P 1280 x 720 3500Kbps
1080P 1920 x 1080 8500Kbps

Suggested bitrate settings for mobile phones with different resolution

192 x 144 320 x 240 480 x 360 640 x 480 1280 x 720 1920 x 1080
Ultra low bitrate 30kbps 60kbps 120kbps 250kbps 500kbps 1mbps
Low bitrate 60kbps 120kbps 250kbps 500kbps 1mbps 2mbps
Medium bitrate 120kbps 250kbps 500kbps 1mbps 2mbps 4mbps
High bitrate 250kbps 500kbps 1mbps 2mbps 4mbps 8mbps
Ultra high bitrate 500kbps 1mbps 2mbps 4mbps 8mbps 16mbps

ABOUT THE AUTHOR

Alisa Cassiel

Alisa Cassiel, an English Copywriter of Digiarty, has 4 years of writing and marketing experience. Love writing and always provide thoughtful how-to guides and tips related to video processing, recent hot topics, new digital devices, hit movies, music, etc. She is a life-enthusiast who is independent, persistent, enthusiastic, energetic, and interested in music, exercise, travel, dance, painting.

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