[FFmpeg-user] HDR 4K support in ffmpeg
cagriozcinar at gmail.com
Thu Dec 17 11:40:13 CET 2015
Currently, ISO/IEC MPEG has been working on HDR video coding
standardization. There is a MPEG HDRtools, which contains necessary tools
for HDR video coding.
Alternatively, there are some HDR image/video toolboxes:
Also, there is a coding project in http://www.lumahdrv.org/ that you can
directly encode your HDR video. However, I do not have idea about its
On Thu, Dec 17, 2015 at 10:25 AM, tarun singhal <tsinghal18 at gmail.com>
> On Thu, Dec 17, 2015 at 2:47 PM, Kevin Wheatley <
> kevin.j.wheatley at gmail.com>
> > On Wed, Dec 16, 2015 at 11:27 PM, Rens Dijkshoorn <rens at offlinemedia.nl>
> > wrote:
> > > Currently there is no agreed standard how this
> > > curve should be defined. The NHK/BBC proposal
> > > seems to be the most promising
> > >
> > > If the input file already has an OETF applied encoding
> > > with ffmpeg should be straight forward in 10 bit x264
> > > or x265.
> > >
> > > If you need to apply an OETF or EOTF then the 3dlut filter
> > > i.c with the right 3dlut might be the way to go..
> > If you have correctly ranged OpenEXR files, then the OpenEXR reader
> > can apply most of the standard "OETF"/transfer characteristics for
> > encoding using '-apply_trc', however the NHK/BBC proposal is not one
> > of them as I did not have a good reference/standard document for the
> > required values to use in encoded files. It does include SMPTE ST2084
> > for instance - though you can be at the whims of the downstream
> > conversion functions doing the correct thing.
> > You will need to flag which ever image state you have using
> > '-color_trc' as well - using color_trc would apply if you have already
> > correctly encoded images in the cases when ffmpeg is unable to
> > determine the correct value (like when fileformats do not support this
> > metadata).
> > Kevin
> > _______________________________________________
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> > ffmpeg-user at ffmpeg.org
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> Hi Team,
> Ok, So I understand that ffmpeg doesnt supports HDR encoding. to answer the
> question about input format, we dont have any strict definition on input
> format it can be anything a simple mp4 video downloaded from youtube or a
> raw MXF content straight out of studio.
> Are you guys aware of any tools free or commercial in the market that can
> independently or work in conjuction with other tools to generate HDR
> encoded 4K content?
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