A second recorder is available in the vMix 4K edition and higher.

To configure the second recording, select the 2 button at the top of the Recording Setup window and tick the Enabled checkbox to enable it.

This second recording has its own settings independent of the first recording including format, codec and the video and audio sources used.

This can provide a lot of flexibility, such as recording a second lower quality recording for internet publishing whilst retaining a higher quality
master for editing and archival.

However, the second recording cannot be independently controlled and will always start and stop at the same time as the primary recording.