In answer to those who are asking for a simple editor for mts and m2ts files, the latest version of FreeVideoDub from DVDVideoSoft, now does this. It is a simple LOSSLESS editor that just cuts out the bits you don't want and then saves what's left. I have been using it with files from a Sony SR11 and files stripped from BluRay discs. However, at the moment there seems to be a problem with my HF100 files. The video loads into the editing window O.K. but on pressing the start button the audio plays perfectly but the video stays on the first frame. I have uploaded various files to them via FileZilla for testing. I have 2 HF100s and the problem occurs with both of them. The same files are editable with ImageBrowser 3SE but that software is very clunky and complicated by comparison with FreeVideoDub. Try it with an mpg 2 ( The newest version handles MP4) and see. I use it to cut the ads out of recorded TV Movies. It's faultless, very quick and as I said, lossless. It has a learning curve of about five minutes !
I have today bought an SR11 on ebay, the SR11 files that I tested were from a relative's SR11.
This is my first post and I too have a problem zoom on the HF100. I was given a second damaged one, and managed to swap the parts over. Both of them have a ridiculously finicky and often hard to rotate switch switch for moving from video to stills. I broke one of them off whilst trying to free it.
I have a brother who has one and also an SR11. He now uses the SR11 exclusively.
Thanks for all the excellent advice on this site.