Disable the cdf function update (cumulative distribution function) when the disable-cdf-update flag is set in the bitstream
When we want to decode a video encoded with the aomenc argument cdf-upate-mode=0
, the decoder doesn't take into account the disable-cdf-update flag inside the bitstream. When doing this, the decoder computes the cdf at each frame or tile instead of not doing it.
Steps to reproduce :
- encode a bitstream with the aomenc arg
cdf-update-mode=0
. - Decode it with dav1d.
Here is a patch for a correction inspired from aomdec source code : 0001-Add-disable_cdf_update-support.patch