[FFmpeg-devel] [PATCH] avcodec/tiff: add limited support for ReferenceBlackWhite and YCbCrCoefficients tags

[Skakov Pavel]

>> Can AVRational be used even through the values are essentially unsigned?
>> LibTIFF really likes to encode 0..1 values with denominator 0xFFFFFFFF.
> 
> Is it feasible for this to use av_reduce() with INT_MAX as max argument?
> It takes int64_t as input values, so UINT_MAX should be fine.

It seems to be able to handle the case, but that code looks like an overkill for what was required to be done.
See PATCH v2 – I rewrote it with plain integer multiplications.