FAQ:How do I create mono/stereo out of stereo/mono audio?


 * See the following sections in the Premiere Pro CS4 Help:
 * Use a mono clip as stereo
 * Break a stereo track into mono tracks
 * Break all stereo tracks into mono tracks
 * Work with submixes
 * Fill Left, Fill Right effects
 * Map audio channels


 * See the following sections in the Premiere Pro CS3 Help:
 * Use a mono clip as stereo
 * Break a stereo track into mono tracks
 * Break all stereo tracks into mono tracks
 * Work with submixes
 * Fill Left, Fill Right effects
 * Mapping audio channels


 * See the following sections in the Premiere Pro 2.0 Help:
 * Treating a mono clip as stereo
 * Breaking out the channels in an audio clip
 * Working with submixes
 * Fill Left, Fill Right
 * Source Channel Mappings


 * Averdahl said:
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 * Jonathan, Source Channel Mapping must be done before you use any portion of the clip in the project. Once the clip is placed on any timeline all options in Source Channel Mapping are greyed out.So using Source Channel Mapping is the very first thing you have to do before using the clip in your edits . Source Channel Mapping is indeed a very powerful feature and very useful one.1. Import the clip and select the clip2. Go to Clip > Audio Options > Source Channel Mapping3. Select Mono4. Click OkWhen you bring your clip down to the timeline there will be: Video+Mono Left+Mono Right. Two new mono audio tracks will be created when you bring the clip down to the timeline and you have full control over the audio via the Audio Mixer.
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 * If you already have a stereo clip (with two mono channels) on a stereo track, you can use panning to balance them.