I think that mobile Safari (so the Safari version for iOS and iPadOS)
should also support DD+ (since iOS 14/iPadOS 14 probably), because
Apple Spatial Audio supports DD+/Atmos.
I will try to test this. ;-)
Otherwise, agreed.
Best,
Stefan
----- Mensagem de Fersch, Christof <christof.fer...@dolby.com> ---------
Data: Mon, 8 May 2023 06:01:56 +0000
De: "Fersch, Christof" <christof.fer...@dolby.com>
Assunto: Re: [Sursound] [Proposal] for HOA web-streaming-format
Para: Surround Sound discussion group <sursound@music.vt.edu>
You are right on EDGE and Safari on *PC platforms*. Firefox, Chrome,
… are a different story. And there is more differences depending on
which platform the browser is running (Windows, Android, iOS, MacOS,
…). What I wanted to say is that you would need to be more specific
for a statement on browser support (is always a combination of
browser, OS, maybe even HW).
Nevertheless, I of course agree MPEG-H support on Browser/OS is not
“very widespread”. However, it also offers features/compression
which are much more advanced than what currently deployed codecs can
do.
Ok, I see, thanks for clarifying. The statement below refers to DD
(not DD+).
//Christof
From: Sursound <sursound-boun...@music.vt.edu> on behalf of Stefan
Schreiber <st...@mail.telepac.pt>
Date: Saturday, 6. May 2023 at 00:41
To: Surround Sound discussion group <sursound@music.vt.edu>
Subject: Re: [Sursound] [Proposal] for HOA web-streaming-format
Short answer:
EAC-3 (DD+) is natively supported by Edge and all Safari browsers.
I really was refering to this one...
AC-3 patents should have expired by now, but of course this codec is a
bit old. (And won’t support even 7.1, by the way. The highest channel
count would be 6.1, and the B channel would be matrixed into 5.1. If
my memory is correctly working. But probably yes... ;-)
Thanks,
Stefan
----- Mensagem de Fersch, Christof <christof.fer...@dolby.com> ---------
Data: Fri, 5 May 2023 16:56:38 +0000
De: "Fersch, Christof" <christof.fer...@dolby.com>
Assunto: Re: [Sursound] [Proposal] for HOA web-streaming-format
Para: Surround Sound discussion group <sursound@music.vt.edu>
Hi Stefan,
I you are interested in commercially using MPEG-H audio, you can
easily license from VIA:
https://www.via-la.com/licensing/mpeg-h/
That is the easiest possible way and similar for the AAC-family.
On browser-support: There is also a browser plugin under the shared
links. Which is a start. Obviously, there is no commercial
implementation available in all browsers.
On “already available”: At least DD+ is not (maybe you meant AC-3,
for which the situation may be different).
Best regards,
//Christof
From: Sursound <sursound-boun...@music.vt.edu> on behalf of Stefan
Schreiber <st...@mail.telepac.pt>
Date: Wednesday, 3. May 2023 at 20:38
To: Surround Sound discussion group <sursound@music.vt.edu>
Subject: Re: [Sursound] [Proposal] for HOA web-streaming-format
Ammendment:
I see what you say. However, if we are talking about some solution to
code, transport, decode and render HOA within browsers, Mpeg-H
currently just can't help. (Because the browser AND OS support for
Mpeg-H 3DA is currently "stuck" at exactly 0%.
Programming your own "app" might run into license issues. (You don't
have such an issue with AAC or even DD+ codecs; which are "already
available" if you would chose to use them.)
I suppose the Mpeg-I Immersive Audio (which very probably would
include support for Mpeg-H 3DA "classic", in the same sense as HE-AAC
is a superset of AAC-LC) might have enormous potential for the
computer and gaming industry. (However, application is not exactly
"imminent". )
Best regards
Stefan
"Please also see
https://urldefense.com/v3/__https://github.com/ittiam-systems/libmpegh__;!!HOHtwYw!FT8U9L-leOGRdV2eq47b7qV69FDM-7gqiT0R31XGsvIrpu2HfqhY0IEHyQJIS0Baa4N-0Wq5OGT7hGlKWxraU-YS$<https://urldefense.com/v3/__https:/github.com/ittiam-systems/libmpegh__;!!HOHtwYw!FT8U9L-leOGRdV2eq47b7qV69FDM-7gqiT0R31XGsvIrpu2HfqhY0IEHyQJIS0Baa4N-0Wq5OGT7hGlKWxraU-YS$><https://urldefense.com/v3/__https:/github.com/ittiam-systems/libmpegh__;!!HOHtwYw!FT8U9L-leOGRdV2eq47b7qV69FDM-7gqiT0R31XGsvIrpu2HfqhY0IEHyQJIS0Baa4N-0Wq5OGT7hGlKWxraU-YS$%3chttps:/urldefense.com/v3/__https:/github.com/ittiam-systems/libmpegh__;!!HOHtwYw!FT8U9L-leOGRdV2eq47b7qV69FDM-7gqiT0R31XGsvIrpu2HfqhY0IEHyQJIS0Baa4N-0Wq5OGT7hGlKWxraU-YS$%3e>
and
https://urldefense.com/v3/__https://github.com/ittiam-systems/libmpeghe__;!!HOHtwYw!FT8U9L-leOGRdV2eq47b7qV69FDM-7gqiT0R31XGsvIrpu2HfqhY0IEHyQJIS0Baa4N-0Wq5OGT7hGlKW_jNaTZE$<https://urldefense.com/v3/__https:/github.com/ittiam-systems/libmpeghe__;!!HOHtwYw!FT8U9L-leOGRdV2eq47b7qV69FDM-7gqiT0R31XGsvIrpu2HfqhY0IEHyQJIS0Baa4N-0Wq5OGT7hGlKW_jNaTZE$><https://urldefense.com/v3/__https:/github.com/ittiam-systems/libmpeghe__;!!HOHtwYw!FT8U9L-leOGRdV2eq47b7qV69FDM-7gqiT0R31XGsvIrpu2HfqhY0IEHyQJIS0Baa4N-0Wq5OGT7hGlKW_jNaTZE$%3chttps:/urldefense.com/v3/__https:/github.com/ittiam-systems/libmpeghe__;!!HOHtwYw!FT8U9L-leOGRdV2eq47b7qV69FDM-7gqiT0R31XGsvIrpu2HfqhY0IEHyQJIS0Baa4N-0Wq5OGT7hGlKW_jNaTZE$%3e>
"
With all due respect:
I really like Mpeg-H and am following the Mpeg-I development, but
Mpeg 3DA is certainly not an open system.
Even if there is some open code.
So how do you currently license Mpeg-H 3DA? (A good expert
question, probably... ;-)
(I suppose I have to write to Fraunhofer IIS to treat that. Or will
you guys at Dolby "help" me to do this? ;-)
Best regards
Stefan
P.S.: Not to overlook that Mpeg-H 3DA Baseline doesn't even support
HOA, whereas the more complete version Mpeg 3DA LC does...
(Atmos doesn't seem to support HOA either. )
----- Mensagem de Fersch, Christof <christof.fer...@dolby.com> ---------
Data: Wed, 3 May 2023 13:54:43 +0000
De: "Fersch, Christof" <christof.fer...@dolby.com>
Assunto: Re: [Sursound] [Proposal] for HOA web-streaming-format
Para: Surround Sound discussion group <sursound@music.vt.edu>
Please also see
https://urldefense.com/v3/__https://github.com/ittiam-systems/libmpegh__;!!HOHtwYw!FT8U9L-leOGRdV2eq47b7qV69FDM-7gqiT0R31XGsvIrpu2HfqhY0IEHyQJIS0Baa4N-0Wq5OGT7hGlKWxraU-YS$<https://urldefense.com/v3/__https:/github.com/ittiam-systems/libmpegh__;!!HOHtwYw!FT8U9L-leOGRdV2eq47b7qV69FDM-7gqiT0R31XGsvIrpu2HfqhY0IEHyQJIS0Baa4N-0Wq5OGT7hGlKWxraU-YS$><https://urldefense.com/v3/__https:/github.com/ittiam-systems/libmpegh__;!!HOHtwYw!FT8U9L-leOGRdV2eq47b7qV69FDM-7gqiT0R31XGsvIrpu2HfqhY0IEHyQJIS0Baa4N-0Wq5OGT7hGlKWxraU-YS$%3chttps:/urldefense.com/v3/__https:/github.com/ittiam-systems/libmpegh__;!!HOHtwYw!FT8U9L-leOGRdV2eq47b7qV69FDM-7gqiT0R31XGsvIrpu2HfqhY0IEHyQJIS0Baa4N-0Wq5OGT7hGlKWxraU-YS$%3e>
and
https://urldefense.com/v3/__https://github.com/ittiam-systems/libmpeghe__;!!HOHtwYw!FT8U9L-leOGRdV2eq47b7qV69FDM-7gqiT0R31XGsvIrpu2HfqhY0IEHyQJIS0Baa4N-0Wq5OGT7hGlKW_jNaTZE$<https://urldefense.com/v3/__https:/github.com/ittiam-systems/libmpeghe__;!!HOHtwYw!FT8U9L-leOGRdV2eq47b7qV69FDM-7gqiT0R31XGsvIrpu2HfqhY0IEHyQJIS0Baa4N-0Wq5OGT7hGlKW_jNaTZE$><https://urldefense.com/v3/__https:/github.com/ittiam-systems/libmpeghe__;!!HOHtwYw!FT8U9L-leOGRdV2eq47b7qV69FDM-7gqiT0R31XGsvIrpu2HfqhY0IEHyQJIS0Baa4N-0Wq5OGT7hGlKW_jNaTZE$%3chttps:/urldefense.com/v3/__https:/github.com/ittiam-systems/libmpeghe__;!!HOHtwYw!FT8U9L-leOGRdV2eq47b7qV69FDM-7gqiT0R31XGsvIrpu2HfqhY0IEHyQJIS0Baa4N-0Wq5OGT7hGlKW_jNaTZE$%3e>
for freely available MPEG-H decoders and encoders, including
web-plugin for the decoder.
//Christof
From: Sursound <sursound-boun...@music.vt.edu> on behalf of Aaron
Heller <ajhel...@gmail.com>
Date: Tuesday, 2. May 2023 at 22:24
To: Surround Sound discussion group <sursound@music.vt.edu>
Subject: Re: [Sursound] [Proposal] for HOA web-streaming-format
There's MPEG-H 3D Audio
https://urldefense.com/v3/__https://en.wikipedia.org/wiki/MPEG-H_3D_Audio__;!!HOHtwYw!AsC1o9UYxCMx7E3ZLD9v9t266ETu5nwqqvY8uNBqnP10TNlsxQJQVYPbx3OZC6_wdvUrM7AjMSotFaYkwCSiLw$<https://urldefense.com/v3/__https:/en.wikipedia.org/wiki/MPEG-H_3D_Audio__;!!HOHtwYw!AsC1o9UYxCMx7E3ZLD9v9t266ETu5nwqqvY8uNBqnP10TNlsxQJQVYPbx3OZC6_wdvUrM7AjMSotFaYkwCSiLw$><https://urldefense.com/v3/__https:/en.wikipedia.org/wiki/MPEG-H_3D_Audio__;!!HOHtwYw!AsC1o9UYxCMx7E3ZLD9v9t266ETu5nwqqvY8uNBqnP10TNlsxQJQVYPbx3OZC6_wdvUrM7AjMSotFaYkwCSiLw$%3chttps:/urldefense.com/v3/__https:/en.wikipedia.org/wiki/MPEG-H_3D_Audio__;!!HOHtwYw!AsC1o9UYxCMx7E3ZLD9v9t266ETu5nwqqvY8uNBqnP10TNlsxQJQVYPbx3OZC6_wdvUrM7AjMSotFaYkwCSiLw$%3e><https://urldefense.com/v3/__https:/en.wikipedia.org/wiki/MPEG-H_3D_Audio__;!!HOHtwYw!AsC1o9UYxCMx7E3ZLD9v9t266ETu5nwqqvY8uNBqnP10TNlsxQJQVYPbx3OZC6_wdvUrM7AjMSotFaYkwCSiLw$%3chttps:/urldefense.com/v3/__https:/en.wikipedia.org/wiki/MPEG-H_3D_Audio__;!!HOHtwYw!AsC1o9UYxCMx7E3ZLD9v9t266ETu5nwqqvY
8uNBqnP10TNlsxQJQVYPbx3OZC6_wdvUrM7AjMSotFaYkwCSiLw$%3e%3chttps:/urldefense.com/v3/__https:/en.wikipedia.org/wiki/MPEG-H_3D_Audio__;!!HOHtwYw!AsC1o9UYxCMx7E3ZLD9v9t266ETu5nwqqvY8uNBqnP10TNlsxQJQVYPbx3OZC6_wdvUrM7AjMSotFaYkwCSiLw$%3chttps:/urldefense.com/v3/__https:/en.wikipedia.org/wiki/MPEG-H_3D_Audio__;!!HOHtwYw!AsC1o9UYxCMx7E3ZLD9v9t266ETu5nwqqvY8uNBqnP10TNlsxQJQVYPbx3OZC6_wdvUrM7AjMSotFaYkwCSiLw$%3e%3e>
and Google's Draft IETF proposal
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