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Applying time compression to your content

Applying time compression to your content while it is encoding enables you to speed up or slow down the content during playback. Speeding up the content reduces the amount of time required to view the entire video or listen to the entire audio file and can be useful when you have to fit content into a specific time slot. Slowing down the content can improve comprehension in situations where the material is highly technical or the language is not native to you.

Windows Media Encoder has two time compression features that can be used independently of one another or in tandem:

Before using time compression, make sure you start with audio and video that is the best quality possible. Artifacts or noise in the source content, especially in the audio, will be more pronounced when the content is accelerated. Noise in the source content also decreases the accuracy of pause removal.

Always test your content to ensure that you achieve the desired results. To run a test, encode some content using time compression and then play it back. If the results are unsatisfactory, adjust the time compression settings, and then encode the content again. 

The time compression feature is not available for live broadcast scenarios and should not be used in conjunction with video optimization features (inverse telecine and deinterlace). Also, when you use time compression with file-based content, your content will only be played through once during the encoding session. Looping in conjunction with time compression is not supported.

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