[Matroska-devel] Mappings for HEVC/H.265 in Matroska

Aaron Robinson Aaron.Robinson at rovicorp.com
Mon Jun 10 20:33:46 CEST 2013

The CodecPrivate structure was copied directly from mpeg4_p10.cpp, but with the addition of VPS list. It seemed logical coming from that perspective. I haven't seen how it's done in HEVC-in-MP4, but if you're generally in agreement it should be done that way, I don't have any particular issue with it. Btw, I don't think the information Jerome mentioned is missing, it's in the VPS list. However, if HEVC-in-MP4 puts it in a separate header for ease of parsing, that's understandable and I don't have any argument against it.
From: Moritz Bunkus [moritz at bunkus.org]
Sent: Monday, June 10, 2013 2:19 PM
To: Discussion about the current and future development of Matroska
Cc: Aaron Robinson
Subject: Re: [Matroska-devel] Mappings for HEVC/H.265 in Matroska

Hey Aaron,

thanks for the update. I don't know if you're (or your colleagues)
subscribed to the list, so I don't know whether or not you're aware of
this question about CodecPrivate structure and why you chose not to
use the same structure as HEVC-in-MP4 does:

I was about to ask the same thing. We did indeed chose to have AVC's
storage in Matroska resemble the one in MP4 in order to ease adoption
on the player's side, and it seems a waste not to do the same with
HEVC. So I'd like to hear your side of this story as well.

Kind regards,

On Fri, Jun 7, 2013 at 12:32 AM, Aaron Robinson
<Aaron.Robinson at rovicorp.com> wrote:
> On Mon, Apr 29, 2013 at 4:15 PM, Denis Charmet <typx at dinauz.org> wrote:
> I've pushed the code with your PARAMETER_SOURCE_BITSTREAM fix, as well as to
> fix the frame duration. Much of this code is based off the existing AVC
> support, massaged to fit HEVC, and as players don't yet exist (chicken or
> egg problem), there are likely to be a fair amount of tweaks needed for that
> sort of thing. Things like the precise structure of CodecPrivate also do
> need to be ironed out, no doubt.
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