by mirkosp » Tue May 29, 2012 2:42 am
Yes, that is indeed correct. The best solution for loading the m2ts in avisynth is dgdecnv, or alternatively dgavcdecdi, but they aren't free solutions.
A free solution involves remuxing to mkv and then using ffvideosource, but keep in mind that this latter method doesn't always work, you won't be able to make clips right off as you should be transcoding it all to lossless first and then clipping/filtering from there to play it safe.