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Error Code:

Audio Level Shift/Level Change 

Description:

"Level Change" is the abrupt change in the base or peak audio levels unintentionally or non-diegetically.

Impact: 

Level Change impacts the Content Quality of the asset. Customer experience will be negatively affected if the dialogue level drops below an audible level. If level's rise unexpectedly, the customer may be startled or jarred out of the seamless viewing experience. Possibly creative intent on the part of the content producer. Any derivative of the asset will contain this level change.

Severity Structure:

FYI

Level shift is indiscernible during playback. 

Issue

Abrupt change on the cut of audio; audio levels are very different from their previous level.

How to Prevent:

Monitor audio on timeline, and double check exports. Netflix will use Dolby Media Meter or FFmpeg to check levels. Use the same tools when possible for consistency. Review audio at cuts for induced fluctuations in levels.                                 

Solution:

Re-adjust the base audio levels so there is no fluctuation.

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