It does. MOVはQuickTimeで、Apple-ネイティブで、MP4が持ち運べないProResとアルファチャネルビデオの通常のホームです. That is what decides whether the mirror can be done by rewriting the file or requires decoding it first.
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 MOV を反転 rather than before it means the conversion works from the file you finally settled on.
