'??' ??? ??? ??? ????? ??? ??? ?? ??? ? ??.Lossless compression can even be used, but has less effects. However, a discount in good quality is usually not a challenge. The query is roughly how much the quality could be minimized, which remains acceptable with regards to file sizing.?? ???? ?? ???? ??? ???? ??? ???, ?? ?? ??? ?? ??? ??? ??? ? ????.?