typo in the colorconvert..
should be:
oiio.ImageBufAlgo.colorconvert(out_buf, src_buf, 'INSPACE', 'OUTSPACE')
On Tue, Apr 2, 2019 at 2:40 PM Daniel Flehner Heen <[email protected]>
wrote:
> Hi, Mate!
>
> In python and OIIO 1.8.x you could do something like this:
> ####
> import OpenImageIO as oiio
>
> sourcefile = 'your_prores.mov'
> src_buf = oiio.ImageBuf(sourcefile)
>
> for frame in range(src_buf.nsubimages):
> src_buf.reset(sourcefile, subimage=frame)
> out_buf = oiio.ImageBuf()
> oiio.ImageBufAlgo.colorconvert(out_buf, 'INSPACE', 'OUTSPACE')
> out_buf.write('/some/path/filename.{0:04d}.exr'.format(frame))
> ####
>
> Just replace INSPACE and OUTSPACE with something useful.
> I think the syntax has changed a bit in oiio2.x but you should be able to
> port I guess.
>
> On Tue, Apr 2, 2019 at 1:47 PM Mate Birkas <[email protected]> wrote:
>
>> Dear OIIO Devs,
>>
>> since this is my first post here, I would like to thank you for this
>> superb tool!
>>
>> I'm building a VFX pipeline and I need to convert ProRes 4444 files to
>> exr sequences. FFmpeg does the job, but color management is not very well
>> documented, OpenColorIO is not supported and I could not even get a
>> intermediate TIF sequence that I can convert to EXR with a color output
>> that I can control with consistently. So I tried to use oiiotool for the
>> job, but when I run
>>
>> `oiiotool test.mov -sisplit -o:all=1 test.%d.exr`
>>
>> oiiotool hangs. It loads all the CPUs to 100% (mostly waiting for io) and
>> starts to fill the RAM, rather slowly. My uneducated guess is that oiio
>> uncompresses all the subimages to RAM before it writes them out to disk.
>> Even if my assumption is right it is prohibitively slow, so slow in fact
>> that I didn't even have the time yet to test my theory. (My 516 frames long
>> 2K test file is running for 35 minutes now)
>>
>> My question is that is this the intended behavior (for now of course) or
>> I'm doing something wrong? Could it be a problem with my build (oiio 2.0.7,
>> gcc 8.2.1, ffmpeg 4.1.1, Arch Linux)? If oiiotool is not production ready
>> in this sense, then maybe you have some information on integrating ffmpeg
>> into an ocio pipeline, and you can point me to the right direction, which I
>> would really appreciate.
>>
>> Tanks a lot,
>> Mate Birkas
>> _______________________________________________
>> Oiio-dev mailing list
>> [email protected]
>> http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org
>>
>
>
> --
> -Daniel
>
--
-Daniel
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