[FFmpeg-user] Ingest of SMPTE-377M

Mark Nelson markn at ieee.org
Mon Dec 28 23:42:20 CET 2015

In at a bit of a disadvantage - we are in a holiday plant shutdown right
now and I don't have direct access to the gear I use to play the WAV file.
I'm on PTO this week as a result.

However, the conversion from ac3 or eac3 is done using a Dolby tool that I
believe is super simple - and that file seems to work properly with AJA
control room playing to an SDI input. It's still possible I botched
something in the files I gave you.

If it's convenient for you maybe postpone worrying about it until
4-JAN-2016? I want to be able to properly respond to these problems.

On Monday, December 28, 2015, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:

> Mark Nelson <markn <at> ieee.org> writes:
> > Same file wrappred in SMPTE-377M headers and packaged
> > in a WAV file as if it were 1536 kbps PCM:
> >
> > https://www.dropbox.com/s/tec7al5bcmihwey/sample.eac3.337.wav
> Is this really valid?
> My receiver cannot play this, the following plays as
> expected here (showing that eac3-over-spdif works
> fine on my equipment):
> $ ffmpeg -i input -acodec eac3 -f spdif out
> $ ffmpeg -f s16le -ac 2 -ar 192k -i out -acodec copy out.wav
> $ mplayer out.wav -ao alsa:device=hw=1.7
> I can make your file play but I wonder if I should...
> (And yes, I do remember that this isn't your issue
> but I would still like to understand the issue first.)
> Carl Eugen
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Mark Nelson – markn at ieee.org - http://marknelson.us

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