Encode ADM to E-AC3 JOC about cavern

[VoidXH]

Use the Enhanced AC-3 Merger tool after you rendered the ADM to a multichannel WAV. That will be a valid Atmos file. JOC encoding is not possible, so the file won't be small enough to pass through optical, but it will work with HDMI and will give the same result. Better, actually.

[EnriqueSampaio]

@VoidXH thanks for the answer. Enhanced AC-3 Merger constructor expects Enhanced AC-3 streams (e.g. streams from EnhancedAC3Reader), but right now I have only one stream, from my atmos WAV file (opened with RIFFWaveReader), so if I pass that stream to the merger constructor, errors occur when trying to read the EAC3 header, as expected. There's some steps that I'm skipping in the middle so my atmos WAV file can be used with the Enhanced AC-3 Merger tool? (I'm using the Cavern.Format.Transcoders.EnhancedAC3Merger class).

Oh and one more thing, will it preserve the Atmos objects or only the beds?

Thanks!

[VoidXH]

By Enhanced AC-3 Merger, I meant the tool under CavernSamples, not the class. E-AC-3 encoding has to be done by FFmpeg, since BAP/coefficient encoding is not yet implemented for E-AC-3 transcoding. The entire process is the following, and does not require coding:

• Import the content into Cavernize and export it in your desired channel layout.
• Import the rendered file into Enhanced AC-3 Merger, and export to E-AC-3.

The result will be a channel-based render of the content. Because the bitrate will be way over DD+ Atmos content, the resulting quality is actually better than using JOC. Objects will not be preserved, but this doesn't have any effect on spatial accuracy. Refer to the render guidelines for proof.