we have sequences of images that we want to encode. we tried to do this before
using FFMPEG and H.264
There are some temporal coherences between the frames, but not really those of
natural video and H.264 does not seem to be suited for our data (I-frame
encoding gives better results than P-frame encoding at same bitrate).
We would like to try some codec that will not generate any block-artifacts. It
should preserve any hard edges in the (RGB) source image at exact pixels - but
the color-depth can be very reduced.
PNG seems to be able to do something like this. As FFMPEG is already integrated
in our system, it would be cool if we could use it right away with PNG encoding
somehow (how?) or with another video codec that has similar properties. Any
suggestions?
It should be a codec that compresses well if most pixels have more or less the
same color (medium gray) and only a few of them diverge
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