2016-03-26 21:24 GMT+01:00 Paul B Mahol <one...@gmail.com>: > On 3/26/16, Martin Vignali <martin.vign...@gmail.com> wrote: > > Hello, > > > > In attach a patch for fate test of B44/B44A compression inside openexr > > file. > > samples can be download here : http://we.tl/QwJcxVn9CV > > need to be put inside : ./fate-suite/exr/ > > > > Detail of tests : > > > > rgba_scanline_float_b44.exr : test scanline B44 float file > > (uncompress data) > > > > rgba_multiscanline_half_b44.exr : b44 file with alpha. have multiple > > scanlines > > > > rgba_scanline_half_b44_12x8.exr : have b44 and b44A block, all pixels > > inside b44 block are used in the final picture > > > > rgba_scanline_half_b44_13x9.exr : have b44 and b44A block, some pixels in > > B44 block are not used in the final picture > > Do you have by any chance INT32 format exr files? >
In attach a sample (it's a 4 point gradient), but most software display it in white (for thoses who interpret it in float, you need to reduce a lot the exposure (-30. in after effects), to have something close to the original render.) Like UINT32 of exr is mostly for 3D data pass (like object id), i don't know how to interpret it (in a general way) as rgba image. > Do you gonna add other missing features, mostly tile and subsampling > support? > > Yes (both are in progress) - tile support (because it's the default render mode of several 3D software). - subsampling (mostly for YCbCr 420 mode , because it's the "more common" mode with subsampling (can be output by RgbaOutputFile class of the official library (like in Adobe After Effects using Luma/Chroma mode). The French National Cinematography Center (http://www.cnc.fr/web/en) support us (Jokyo Images) for this work, in order to have a better use of ffmpeg inside post-production companies (who use openexr), avoiding lot of intermediate conversion (like what is suggest in ffmpeg wiki) Best Regards Martin Jokyo Images
INT_32_SCANLINE_UNCOMPRESSED.exr
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