The VidiEditor timeline supports different types of media. The list of supported media will be extended with future product versions.
Video (see Supported Proxy Video Format [VE 21.1 OG] for technical preconditions)
Audio Only (see Supported Audio Format [VE 21.1 OG] for technical preconditions)
Please note that when video or audio media is added to the timeline, it will always be considered with 2 audio channels in the timeline. When added to the timeline, it’s decided what 2 channels are used.