Problem 1:M4V to Final Cut Pro. Any ideas?
I've been doing a lot of actor's reels for local actors. they come to me with a DVD of their work and I've been using HandBrake to pull the files off the disc, which results in an m4v file. I've had some success converting this to ProRes in QuickTime and editing this in FCP. Does anyone have a better workflow?

Problem2: .m4v video won't import to iMovie
handbrake ripped a personal video to .m4v format. iMovie doesn't recognize this file when I browse to import. Is there a work around?

You may have collect bundles of .m4v file and try to editing them in these two fantastic Mac editing programs:iMovie or FCP. So if you are unable to import your M4V videos into the two apps, you can transcode M4V to DV for FCP or iMovie.

M4V Converter for Mac can do the job efficiently. Meanwhile, it has good compatibility with Mac Lion OSX. Furthermore, it has default settings for iMovie or FCP. That's to say, what you need is choose the iMovie or Final Cut Pro, the output file can be definitely and optimally play back on them. Plus, it can also act as Mac M4V Video editor as well, assisting you in doing some practical editing job like video merging or clipping, change the video or audio parameters, etc.

Tutorial on How to edit M4V files in iMovie or Final Cut Pro:

Download the M4V conversion program for Mac. Plus, it can support lion OSX 10.7, Snow Leopard 10.6, 10.5 OSX, 10.4 OSX as well.

Step 1: Add M4V files to the program
Click "Add Files" to the Mac M4V converter, then load the M4V video(s) to the application.

Step 2: Choose iMovie or FCP and its preset file format like DV.
Select iMovie or Final Cut Pro preset from output format list like DV.

Step 3: Begin the M4V conversion on Mac Lion OS

After done the conversion, now you can go on the edit M4V in iMovie or M4V video editing in FCP.