On Mon, 18 Mar 2019 09:13:01 +0100 Moritz Barsnick <barsn...@gmx.net> 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. The DNG spec is pretty massive, and there's a huge amount of variations. There can easily be far more than two streams, there could be several "main" images and several previews in different sizes. Their order can vary too, it's not always the thumbnail first; thumbnails can also be omitted entirely. There's also several different encodings/compression types for the "main" images. I've used their libdng for a project. It's a big LGPL library implementing pretty much everything, but no distro really ships it, so it'd have to be embedded or built manually by the user. - Lauri _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
