One or more Slomo modules can be added by selecting Modules > Add > Replay > Slomo. This module offers multi-channel replay and slow motion as well as clip support. It records video & audio from the selected sources to disk using very little CPU.

Right click the module to open its popup menu. The following additional menu entries are available.

Pause Recording

When checked the recording is paused. Playback remains available.

Record Drive

Select a drive for the record buffer. Preferably each Slomo module will use a dedicated SSD as record drive, although it is possible to use a very fast PCIe SSD for multiple tasks. Data rates are high, e.g. for 720p50 video the write data rate will be 69 MB/s (1280*720*1.5*50). Keep in mind that the specified write speed for an SSD drive can drop significantly when it starts overwriting old data (when the record buffer is full) and/or due to thermal throttling.

Record Buffer Size

Select the percentage of free space on the record buffer drive to be used for recording. If the record buffer is full the old frames will be deleted when new frames are added. Also displays the corresponding recording time.

Clip Drive

Select a drive to store clips. Preferably each Slomo module will use a dedicated SSD as clip drives, but the drive can be shared by more modules, especially if it's a fast PCIe SSD. If you select None clips will not be stored but indexed in the record buffer. This does not require a clip drive nor use resources to copy the clip. Make sure your record drive is large enough to hold the entire production, as clips will disappear if the recording is erased or overwritten.

Clip Export Folder

Select a folder to store compressed video clips.

Option > Alpha

When Premultiplied is selected the recorded video will include the alpha channel. Note this increases disk requirements for bandwidth and capacity by 67%.