[FFmpeg-user] Dolby E decoder

[Mike Brown]

On Fri, Sep 08, 2017 at 12:54:12AM +0200, Carl Eugen Hoyos wrote:
> (Sorry, my knowledge of SMPTE 337M is limited but I know that so far,
> this is the only "format" for which FFmpeg supports Dolby-E, and that
> adding support for other formats will be possible but hasn't been
> done yet.)

>From what I understand, reading the synopsis of SMPTE-337M, is that it is
not a container specifically for Dolby-E.  I couldn't anything out of it to
indicate that it can even handle Dolby-E.

That said, I do deal with SMPTE-302M, which is the spec for which Dolby-E is
applied to Transport Streams.  In my case satellite feeds (not for the
consumer).  The spec talks about MPEG-2 TS streams, but it applies to H.264
streams as well.

Right now, I use ffmpeg to extract the stream into a 2-ch WAVE file, in which
I use in another program to extract the audio into 6 mono WAVE files.  I then
use ffmpeg to encode a AC3 file.

Are you saying that I can use ffmpeg and get to a final ac3 file in a single
step?

MB
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