Oh, I just remembered, I encoded an AVCHD version of v2.5 a few days ago and then I totally forgot about it. What I need for it is for someone to provide me with the soundtracks. What I need are the tracks, which are in the v2.1 AVCHD, at the same bitrate they are there, but encoded from the lossless tracks that are in v2.5 mkv, because IIRC they are newer and better versions. I could try doing this myself but I'd fel much safer if someone who actually knows what they are doing did it for me.