| Table of content: | ||||
| Encoders | ||||
| Constant Bitrate: | Test procedure (CBR) | Results CBR | Encoding time (CBR) | |
| Variable Bitrate: | Test procedure (VBR) | Results VBR | Encoding time (VBR) | Average bitrate of VBR files |
| Conclusion and optimal settings | ||||
| Links |
The problem, with Variable Bitrate (VBR), is that the final average bitrate is not predictable. This means that the final file size is not predictable.
On this table, you may notice the fluctuation of the average bitrate for different VBR's quality setting and audio files.
| Song from Marilyn Manson |
Song from Camouflage |
Song from Live |
|
| lame -mj -b96 -B320 -h -V2 -F |
137 kbps | 182 kbps | 191 kbps |
| lame -mj -b64 -B192 -V4 -F |
130 kbps | 163 kbps | 153 kbps |
| lame -mj -b64 -B192 -V6 -F |
125 kbps | 113 kbps | 141 kbps |
| gogo -m j -v 2 |
127 kbps | 165 kbps | 188 kbps |
| gogo -m j -v 4 |
124 kbps | 157 kbps | 170 kbps |
| gogo -m j -v 6 |
119 kbps | 113 kbps | 141 kbps |