profile

You can only choose an audio profile when you specify AAC for the value of Audio:Codec.

Specify the AAC profile for the output file. Elastic Transcoder supports the following profiles:

  • auto: If you specify auto, Elastic Transcoder selects the profile based on the bit rate selected for the output file.

  • AAC-LC: The most common AAC profile. Use for bit rates larger than 64 kbps.

  • HE-AAC: Not supported on some older players and devices. Use for bit rates between 40 and 80 kbps.

  • HE-AACv2: Not supported on some players and devices. Use for bit rates less than 48 kbps.

All outputs in a Smooth playlist must have the same value for Profile.

If you created any presets before AAC profiles were added, Elastic Transcoder automatically updated your presets to use AAC-LC. You can change the value as required.