IMHO you have to download the whole media again, only the dub is very difficult that would match the video seamlessly - even subs often desync because in that particular zone they cut 2 seconds from a scene or they are playing the media at a wrong frame rate (now less common but with analog media it happened a lot)
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IMHO you have to download the whole media again, only the dub is very difficult that would match the video seamlessly - even subs often desync because in that particular zone they cut 2 seconds from a scene or they are playing the media at a wrong frame rate (now less common but with analog media it happened a lot)