[FFmpeg-devel] [PATCH] lavc/ffv1: Properly check that the 4th and 5th quant tables are zeroes

[Derek Buitenhuis]

On 02/01/2020 23:09, Michael Niedermayer wrote:
> I think if entry 128 is 0 then the whole table must be 0.
> If that is the case, checking the entry 128 of table 4 and 5 would be enough
> and caching the entry comparission is maybe not needed.

Is this guaranteed somehow? It isn't mentioned in the spec.

- Derek