Both RewrapAVCHD 1.0b3 and 1.0b4 do not work on well more than half of the .m2ts files I give it. It just cursorily examines it and then spits out a null file almost immediately with a "ping."

I have a Panasonic GH2 and have been looking for something like this! I looked at numerous converters, but most required knowing what I was doing. ;-)

ReWrapAVCHD does dead-simple conversions with no apparent loss of video quality and most importantly, NO HEADACHES!

It really couldn't be simpler to use. Drag & Drop conversion works great. A dialogue box open every time and shows only 2 options: Delete the original file and Open the converted file with QuickTIme Player. That's it!

Now I'll shoot more video!

Works unless you drop files onto it, in which case it deletes your files and does nothing else. See my comment in the "troubleshooting" section.

At least a solution that do not reencode !
Thank you so much

I downloaded this to help convert the AVCHD files from my Sony NEX-5 to something I can import into iMovie. I am quite a novice at this business... but it seems like there aren't a lot of options on the RewrapAVCHD interface. I can select my MTS file and then it does a little something on the status bar but I get no results. I downloaded the Perian plug-in but is there anything else I need to do?

CAUTION!! Do not drop files onto this app. It will delete the originals without doing anything else, regardless of settings. I advise that you back up your files, then only do one file at a time using the window interface, and, to be safe, don't check the "delete originals" checkbox (which, as mentioned does NOT need to be on for this bug to do its damage).