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 October 14, 2008

NPR Distribution, Managers of the Public Radio Satellite System

ContentDepot FAQ for Producers


Questions about Preparing Files for the ContentDepot

What are the file formats for uploading audio to the ContentDepot?

Broadcast audio (episode segments and on-air promos) must adhere to the following standard:

File format: MP2 (MPEG1, Layer II)
Mode: mono or stereo
Bit Rate: 128 kbps for mono or 256 kbps for stereo
Sampling Rate: 44.1 KHz
Word Length: 16 bit
Frame Padding: must be turned off
ID3 (Audio) Tags: must be turned off

Do I still need to include silence at the beginning and end of each file?

A half second of audio silence at the beginning and end of each segment is required to prevent up and downcutting. Remember to calculate this silence into your total episode length. The ContentDepot will provide a total episode length when all segments have been uploaded that you can use to confirm the proper length.


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