[Matroska-devel] JPEG 2000 codec support
antonin.descampe at uclouvain.be
Fri Feb 13 15:58:30 CET 2015
> Le 13 févr. 2015 à 12:06, wm4 <nfxjfg at googlemail.com> a écrit :
> On Wed, 4 Feb 2015 15:37:29 +0000
> Antonin Descampe <antonin.descampe at uclouvain.be> wrote:
>> Dear Matroska developers ,
>> In the context of an EU-funded project called PREFORMA dealing with long-term preservation archives, we need to wrap JPEG 2000 frames using MKV.
> That sounds insane to me. Why did they choose JPEG 2000? It has bad
> support in open source and AFAIR has nothing on h264 as far as
> compression efficiency and quality goes.
Well, I have quite a different opinion.
Concerning open-source support, there is the openjpeg library.
Concerning compression efficiency and quality, JPEG 2000 and H264 are suited for completely different use cases. In the case of long-term preservation archives where they need high bitrate (possibly lossless) compression, JPEG 2000 makes perfectly sense. That’s probably why well-known institutions like INA (french archives), British library, or Library of congress have opted for J2K for their assets. In addition to this, J2K is royalty-free, which is not the case of h264.
>> I looked in mail archives and documentation, but it seems there is currently no such JPEG 2000 support within Matroska.
>> My questions:
>> * Is there any plan to include JPEG 2000 as one of the supported codec in Matroska ? If yes, what would be the timeframe ?
>> * Is there any work already done in that direction ?
>> * What would be the steps to follow to get this codec supported by Matroska ?
>> Many thanks in advance for any comment on that topic !
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