How to convert AVCHD (MTS/M2TS) to MP4 losslessly.

[FakeOutdoorsman]

All attempts whether directly using ffmpeg (compiled) or WinFF or on W7 DVD Flick or winff result in an audio delay.

What was your (compiled) ffmpeg command? I'm just curious since you solved the issue.

[Merrattic]

Really nothing special (just testing at present, seeking a/v sync goodness before tweaking any further)

ffmpeg -i input.MTS -t 30 -target pal-dvd -aspect 16:9 output.mpg

This encodes a 30 second segment from @ 80mb down to @20mb, with good enough quality for large screen output. This on Xubuntu 12.04 using a Dell Precision M6500 laptop (well, desktop replacement ) Yet to run it on a full 23 minutes of MTS (4GB segment) to see if A/V sync remains OK all the way through.

Any advice on improving the line is always welcome

EDIT run the line on a full 4GB, and no a/v sync problems. Will have to see what happens when I author the DVD

EDIT have been using DVD Flick on W7 to create dvd isos, but this just puts the a/v sync problem back, even without re-encoding the video, so installed DEVEDE and got a perfect dvd iso, with menu