Re: [FFmpeg-devel] [PATCH] avcodec/exr: add cineon lin2log trc

2020-03-06 Thread Carl Eugen Hoyos
Am Fr., 6. März 2020 um 22:11 Uhr schrieb Paul B Mahol : > > On 3/6/20, Carl Eugen Hoyos wrote: > > Am Fr., 6. März 2020 um 00:25 Uhr schrieb : > > > >> +AVCOL_TRC_CINE_LIN2LOG = 19, ///< Default Cineon/DPX linear to log 1D > >> curve > > > > Isn't it possible to use a random large number

Re: [FFmpeg-devel] [PATCH] avcodec/exr: add cineon lin2log trc

2020-03-06 Thread Paul B Mahol
On 3/6/20, Carl Eugen Hoyos wrote: > Am Fr., 6. März 2020 um 00:25 Uhr schrieb : > >> +AVCOL_TRC_CINE_LIN2LOG = 19, ///< Default Cineon/DPX linear to log 1D >> curve > > Isn't it possible to use a random large number here? No, because that would be big hack on top of big pile of hacks that

Re: [FFmpeg-devel] [PATCH] avcodec/exr: add cineon lin2log trc

2020-03-06 Thread Carl Eugen Hoyos
Am Fr., 6. März 2020 um 00:25 Uhr schrieb : > +AVCOL_TRC_CINE_LIN2LOG = 19, ///< Default Cineon/DPX linear to log 1D > curve Isn't it possible to use a random large number here? Carl Eugen ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org

Re: [FFmpeg-devel] [PATCH] avcodec/exr: add cineon lin2log trc

2020-03-06 Thread Gonzalo Garramuño
El 06/03/20 a las 16:33, Mark Reid escribió: You would perhaps be better creating a specialist filter and implementing it using OCIO (as suggested https://github.com/AcademySoftwareFoundation/tac/tree/master/gsoc), or extending the current 3D LUT code to read Cinespace or other 3D LUT formats

Re: [FFmpeg-devel] [PATCH] avcodec/exr: add cineon lin2log trc

2020-03-06 Thread Mark Reid
On Fri, Mar 6, 2020 at 5:03 AM Kevin Wheatley wrote: > On Fri, Mar 6, 2020 at 10:19 AM Hendrik Leppkes > wrote: > > AVColorTransferCharacteristic should follow ISO/IEC 23001-8 and its > > following standards (ISO/IEC 23091 I believe). Not sure we have a > > solution for specialized variants,

Re: [FFmpeg-devel] [PATCH] avcodec/exr: add cineon lin2log trc

2020-03-06 Thread Kevin Wheatley
On Fri, Mar 6, 2020 at 10:19 AM Hendrik Leppkes wrote: > AVColorTransferCharacteristic should follow ISO/IEC 23001-8 and its > following standards (ISO/IEC 23091 I believe). Not sure we have a > solution for specialized variants, but adding one right there would > collide with the next addition

Re: [FFmpeg-devel] [PATCH] avcodec/exr: add cineon lin2log trc

2020-03-06 Thread Hendrik Leppkes
On Fri, Mar 6, 2020 at 12:25 AM wrote: > > From: Mark Reid > > Hi, > The following patch adds a cineon lin2log color transfer characteristic to > exr. > The purpose of this patch is to allow preserving of the dynamic range of an > exr file when converting to DPX or when using video filter such

Re: [FFmpeg-devel] [PATCH] avcodec/exr: add cineon lin2log trc

2020-03-06 Thread Paul B Mahol
On 3/5/20, mindm...@gmail.com wrote: > From: Mark Reid > > Hi, > The following patch adds a cineon lin2log color transfer characteristic to > exr. > The purpose of this patch is to allow preserving of the dynamic range of an > exr file when converting to DPX or when using video filter such as 3d

[FFmpeg-devel] [PATCH] avcodec/exr: add cineon lin2log trc

2020-03-05 Thread mindmark
From: Mark Reid Hi, The following patch adds a cineon lin2log color transfer characteristic to exr. The purpose of this patch is to allow preserving of the dynamic range of an exr file when converting to DPX or when using video filter such as 3d luts. I wasn't sure if adding it to the