Jason Freets <jasonslife <at> hotmail.com> writes:

> Still, it was not possible to use FFMPEG to do the 
> same with r10k (10 Bit RGB 444) such as Blackmagic 
> or AJA codecs.

I tested the following:

$ ffmpeg -f lavfi -i testsrc -t 10 -vcodec r210 out.avi
$ ffmpeg -i out.avi -vcodec ffv1 -pix_fmt gbrp10 -coder 1 out2.avi
$ ffmpeg -i out2.avi -vcodec r210 out3.avi

out.avi and out3.avi are identical.

Please provide the input sample for which the conversion(s) 
are not lossless.

Thank you, Carl Eugen

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