One page: AC-3 vs E-AC-3 vs AC-4 comparison, the four features built into the stream, ATSC 3.0 test bitrates, deployment status, and the 'AC-4 does not play everywhere AC-3 does' pitfall.
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The book · Volume 4 of 7
Audio for Video: A Complete Guide to Sound in Video Products: From PCM and Codecs to Loudness, Accessibility, and Real-Time Voice Processing
This sheet compares AC-3, E-AC-3 and AC-4, lists the ATSC 3.0 test bitrates and flags where AC-4 will not play, enough to decide if it belongs in your audio set. Volume 4 covers audio codecs in depth, together with channel layouts, loudness and LUFS, and accessibility features such as dialogue tracks that AC-4 carries in the stream. Written by Nikolay Sapunov, CEO at Fora Soft.
Deciding whether to add Dolby AC-4 next to AC-3 in your audio delivery?
Tell us your target devices and markets, and we will map which audio codecs each one decodes and propose a fallback set that plays everywhere. 250+ video products shipped since 2005.
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