Very much so. OGG はオープン Xiph コンテナであり、通常 Vorbis または Opus を搭載し、ライセンスの負担はありません。. That determines both the headroom available and whether the saving costs you anything in fidelity.
透明度の決定は，透明度の変更を行う段階である。 That is the step most people actually came for, and doing it after OGG を圧縮 rather than before it means the conversion works from the file you finally settled on.
