These two options allow you to set the default scaling used for both types of media. This does not update media already in ProPresenter.
These two options are self-explanatory with the descriptions that are provided. If you are unsure about these selections, our recommendation is to leave them unchecked.
This section allows you to define how many channels of audio you are outputting. Most users will only have two channels, but if you are using a multi-channel audio device, you will want to change this number to ensure all of the channels are sent from ProPresenter. You can also adjust the Audio Delay, which may be necessary if you are outputting video over SDI.
This setting allows you to use 16x9 content in a 4x3 environment without distorting the original video.