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The VidiEditor timeline supports 2 channels audio per segment selectable by the user (compare: Audio Channel Selection for Timeline [VE 21.3 UG] ). As different tracks can be used and combined on a timeline, the topic of mixing audio channels to a final stereo mix becomes relevant.

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While the preview is based on 2 channels, the publish phase will haven more options based on the output format. For example, imagine a output into a XDCAMHD file that has 8 audio channels. In this scenario it might make sense to store the mix on channel 1 and 2, but the voice over on channel 3 and 4. This can be done in the transcoder preset (shape tag) configuration. Please refer to Publish Transcoding Preset Configuration [INT VE 21.3 OG] and Direct Out Publish Configuration [INT VE 21.3 OG] https://vidispine.atlassian.net/wiki/pages/createpage.action?spaceKey=ITSFP&title=Publish%20Transcoding%20Preset%20Configuration%20%5BINT%20VE%2021.3%20OG%5D and https://vidispine.atlassian.net/wiki/pages/createpage.action?spaceKey=ITSFP&title=Direct%20Out%20Publish%20Configuration%20%5BINT%20VE%2021.3%20OG%5D for an introduction about this configuration.

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When adding multiple channels of different audio signals into a accumulated signal (mix), the mix will usually result in a signal with higher level than the single signals. This can lead to a mix higher than the maximum audio level allowed. As a result, the signal will be overdriven and the user hears clipping. This effect cannot be avoided by VidiEditor, as the level, compression and amount of audio channels mixed highly depends on the usage and media used. As a result, the user needs to ensure clipping is avoided. The peak meter in VidiEditor helps to indicate the level of the mixed signal: StatustitleUnknown Attachment

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