Difference between revisions of "Bit rate"
Jump to navigation
Jump to search
(Write about constant bit rate and variable bit rate) |
m (Add acronyms) |
||
| Line 3: | Line 3: | ||
The '''bit rate''' or '''bitrate''' of media measures the bits used to store the data per second (kilobits per second, kbit/s or kbps). It is formally defined as the product of (bits per sample) × (samples per second). | The '''bit rate''' or '''bitrate''' of media measures the bits used to store the data per second (kilobits per second, kbit/s or kbps). It is formally defined as the product of (bits per sample) × (samples per second). | ||
| − | A '''constant bit rate''' or '''constant bitrate''' is a bit rate that does not change. | + | A '''constant bit rate''' or '''constant bitrate''' (CBR) is a bit rate that does not change. |
| − | A '''variable bit rate''' or '''variable bitrate''' is a bit rate that varies depending upon the complexity of the data. | + | A '''variable bit rate''' or '''variable bitrate''' (VBR) is a bit rate that varies depending upon the complexity of the data. |
Some common bit rates for [[mp3]] files are 128 kbit/s (standard), 192 kbit/s (medium quality), 256 kbit/s (high quality) and 320 kbit/s (highest quality).<br> | Some common bit rates for [[mp3]] files are 128 kbit/s (standard), 192 kbit/s (medium quality), 256 kbit/s (high quality) and 320 kbit/s (highest quality).<br> | ||
Revision as of 07:22, 13 February 2019
The bit rate or bitrate of media measures the bits used to store the data per second (kilobits per second, kbit/s or kbps). It is formally defined as the product of (bits per sample) × (samples per second).
A constant bit rate or constant bitrate (CBR) is a bit rate that does not change.
A variable bit rate or variable bitrate (VBR) is a bit rate that varies depending upon the complexity of the data.
Some common bit rates for mp3 files are 128 kbit/s (standard), 192 kbit/s (medium quality), 256 kbit/s (high quality) and 320 kbit/s (highest quality).
A low bit rate (below about 128 kbps) makes for poor audio quality.
