That video has the Su-57 in the Indian airshow (notice the HAL Tejas there) spliced into a video of Algerian dignitaries.
We have seen the Su-57 in Algerian art before. But this news still seems to be of low reliability.
Algeria seems to be covering its bases with procurement lately. For example they are buying ships from China and Germany. While the alleged order for the Steregushchiy corvette aka Tigr seems to have gone nowhere for example.
So you actually don't rate this sale as confirmed or at least not to Algeria?
And another question! I presume, the production capacity is still not that high enough to produce those for Algeria additionally to an increased batch for Russia this year! So Algeria first in order to satisfy a new customer or am I wrong?