Or to put it more simply, no it won't! I tried it and it simply couldn't see the video. I tried changing the extension to .mpg and a few variations on that, but that didn't work eitherAnd while there may be other programs out there which recognise it and accept it, apart from Adobe Encore, they are likely to be at the professional end of the market. Video Studio would not (I have already gone that route!)
Adobe Encore of course will recognise .m4v as it is Premiere's companion authoring program.
