[FFmpeg-devel] [PATCH] avcodec/tiff: Add support for recognizing DNG files

Michael Niedermayer michael at niedermayer.cc
Mon Mar 18 11:19:58 EET 2019


On Mon, Mar 18, 2019 at 09:13:01AM +0100, Moritz Barsnick wrote:
> On Sun, Mar 17, 2019 at 23:05:01 +0100, Paul B Mahol wrote:
> > Still wrong, You can decode images you linked just fine (albeit with
> > incorrect colors) with command:
> > 
> > ffmpeg -subimage 1 -i IMAGE.dng ....rest of command.
> 
> Shouldn't, ideally, these image files be demuxed as two image streams?
> Perhaps with the "main" image as the first stream.

probably something like this, yes
I think a good test for what "should" be done is to ask what "works"
consider converting the data from one format to another, all data
that source and destination supports should be preserved.

A design that can only extract one image of many or one stream or one
channel. Cannot preserve all information so it fails that simple
use case.

thx

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Dictatorship naturally arises out of democracy, and the most aggravated
form of tyranny and slavery out of the most extreme liberty. -- Plato
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