Re: [FFmpeg-user] DPX bit depth.

running the same command here, I get an image that contains ~16 bits worth of data and it looks 'correct' in Nuke. It also matches a PNG made with ffmpeg Kevin On Mon, May 11, 2015 at 2:50 PM, tim nicholson nichot20-at-yahoo@ffmpeg.org wrote: On 11/05/15 12:59, tim nicholson wrote: Thanks

Re: [FFmpeg-user] HD SD Down-Convert Prores Color

In case nobody realises, the colour differences you are showing, look like a miss match between the encoding matrix and the decoding matrix used to perform the RGB-YCbCr conversion, like it is encoded with BT 709 and decoded with 601. Kevin ___

Re: [FFmpeg-user] HD SD Down-Convert Prores Color

I should have paid more attention to your command line, in that case you are going between the same pixel format and I'm not sure that the use of the scalar for converting between different colour difference encodings will actually do anything as I believe it only considers using the matrices if

Re: [FFmpeg-user] Color Shift -- dpx to prores

On Tue, Jun 9, 2015 at 1:08 PM, Hardik Kanakia hardik.kana...@gmail.com wrote: Hello All, Tried using the below command, still the issue of color jump persists from dpx (RGB) to prores422 (YUV) /usr/local/sbin/ffmpeg263/ffmpeg -r 24.00 -i hahk_c300_400.%06d.dpx -s 1920x1080 -r

Re: [FFmpeg-user] HDR 4K support in ffmpeg

On Wed, Dec 16, 2015 at 11:27 PM, Rens Dijkshoorn 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

Re: [FFmpeg-user] Why is it possible to set a timecode with 24:00:00:00 and beyond?

The ITU has the following freely available https://www.itu.int/dms_pubrec/itu-r/rec/bt/R-REC-BT.1366-0-199802-S!!PDF-E.pdf so at best tens of hours has 2 bits of BCD Kevin ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org

Re: [FFmpeg-user] -vf Colorspace filter - 'Unknown input primaries 2' error

For note DCP's are typically 2.6 gamma encoded X'Y'Z'. Conversion to Rec 709 RGB might be as simple as linearise to XYZ and then convert to 709 using the primaries matrix and apply an appropriate transfer function for your new display environment, however for perceptual matching you may need to

Re: [FFmpeg-user] FFMPEG and OCIO

On Fri, Jan 20, 2017 at 10:54 AM, Carl Eugen Hoyos wrote: > 2017-01-19 3:20 GMT+01:00 Daniel Kim : > >> I'm trying to use ffmpeg in our pipeline and integrate it with >> OCIO for the color space transformations. > > Why? > > What is wrong with the color

Re: [FFmpeg-user] FFMPEG and OCIO

On Fri, Jan 20, 2017 at 5:53 PM, Carl Eugen Hoyos wrote: > 2017-01-20 16:26 GMT+01:00 DEV - VFXBOAT : > >> But, the exr rendered by maya are in linear > > What is wrong if they transformed to png by FFmpeg? > > Please do not top-post here, Carl Eugen

Re: [FFmpeg-user] dpx to prores & h.264 - color shift

Andreas, instead of using the -colormatrix option try instead using -vf scale=in_range=full:in_color_matrix=bt709:out_range=tv:out_color_matrix=bt709 assuming your DPX files are utilising full range encoding Kevin ___ ffmpeg-user mailing list

Re: [FFmpeg-user] OpenEXR input with cropped data window produces black output

Answering my own question... I have not tested this but having manually read the code in the git history I'll try code up a fix for my theory: looks like there is a bug in the commit 1a08758e7c4e14a9ea8d2fef6c33ad411b2d3c40 relating to the handling of ptr in decode_frame after decode_block is

Re: [FFmpeg-user] OpenEXR input with cropped data window produces black output

As a partial fix I've submitted a patch here: https://ffmpeg.org/pipermail/ffmpeg-devel/2017-January/205267.html That fixes the simple cases. Kevin ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To

Re: [FFmpeg-user] SEGV when using VMAF filter.

Sent on the go... > On 30 Apr 2018, at 18:58, Carl Eugen Hoyos <ceffm...@gmail.com> wrote: > > 2018-04-30 16:33 GMT+02:00, Kevin Wheatley <kevin.j.wheat...@gmail.com>: > >> I note that a similar report was made >> https://trac.ffmpeg.org/ticket/6865 but tha

[FFmpeg-user] SEGV when using VMAF filter.

Hi, I've just built a version of ffmpeg n4.0 from ace829cb45cff530b8a0aed6adf18f329d7a98f6 linked against libvmaf ba5356cb41cf3b19ca0bb108bd8e86e9da402f94. I notice when running commands similar to the examples in the FFmpeg documentation: ffmpeg -i test2.mov -i test3.mov -lavfi libvmaf -f null

Re: [FFmpeg-user] Setting colour range.

from memory only ISO movies have the option of adding the range bit to the ATOM, QuickTime (.mov) does not. Kevin ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or