This transition mixes two audio streams; it starts with the first audio stream and ends with the second.
The dialog contains two sliders which allow you to set crossfade speed for both audio channels. The default values in the middle correspond to a linear interpolation; the lower and higher values make the crossfade slower or faster, respectively.
The checkbox locks the two sliders so that they always move together.
The following table lists the transition's parameters in network file format.
Table 4.78. Crossfade parameters
| Parameter | Values | Description | Required | Default value |
|---|---|---|---|---|
| transition | Crossfade | transition name | yes | |
| rate | positive real | crossfade rate | no | 1 (=linear) |
| rate_left | positive real | rate for left channel | no | rate |
| rate_right | positive real | rate for right channel | no | rate_left |
This is a transition between two audio streams; it fades the first audio stream out and then fades the second audio in.
The dialog allows you to set the end of fade out and the beginning of the fade in (in percentage of the clip's length), as well as the rate of both fades.
The Rate sliders affect the speed of fade in and fade out.
The Autoscale option prevents the sum of contributions of the infading audio and the outfading clip from overflowing.
The following table lists the transition's parameters in network file format.
Table 4.79. Fade parameters
| Parameter | Values | Description | Required | Default value |
|---|---|---|---|---|
| transition | Fade | transition name | yes | |
| fade_out | real from (0, 1) | the end of fade out relative to the length of clip | no | 0.5 (middle of the clip) |
| fade_in | real from (0, 1) | the start of fade in relative to the length of clip | no | 0.5 (middle of the clip) |
| rate_out | real > 0 | rate of fade out | no | 1 (uniform) |
| rate_in | real > 0 | rate of fade in | no | 1 (uniform) |
| autoscale | boolean (0 or 1) | scale the composed brigthness against overflow | no | 1 |