Edit/Save non-protected m4v files?

Discussion in 'Digital Video' started by Dimwhit, Jan 17, 2011.

  1. Dimwhit macrumors 68000

    Dimwhit

    Joined:
    Apr 10, 2007
    #1
    I can't see my exact question having been answered, so I'll give it a go.

    I have some non-protected videos (personal stuff) in m4v format that was created from DVD using Handbrake.

    I would like to edit these files (cutting out parts) and merge them together. Easy enough. QT Pro does that. But I want to save it straight to the current m4v format. QT Pro, when it saves edited m4v files, converts them over to mov files, which I want to avoid.

    Anyone know of a program that can edit/save m4v files without having to convert them at any point in the process?
     
  2. Sedulous macrumors 68000

    Sedulous

    Joined:
    Dec 10, 2002
    #2
    You can trim videos using QTX or iMovie. But no matter what, as far as I know you will need to re-encode. Perhaps someone more knowledgeable would have better insight.

    One possibility would be to extract the video from your mp4 using MKVTools and maybe feeding those into some kind of video editor (iMovie?) that can then export the final edit without re-encoding.
     
  3. MisterMe macrumors G4

    MisterMe

    Joined:
    Jul 17, 2002
    Location:
    USA
    #3
    .mov is a container format, not a video format. The default video format for the .mov container is MPEG-4.
     
  4. Dimwhit thread starter macrumors 68000

    Dimwhit

    Joined:
    Apr 10, 2007
    #4
    So if .mov and .m4v files both use the MPEG-4 format, then in theory, you should be able to edit the files and save them without re-converting. A pass-through on the video or something? Do you know of an app that will do that?
     
  5. KeithPratt macrumors 6502a

    Joined:
    Mar 6, 2007
    #5
    There's no re-encoding going on in this action, so all you need to do is rewrap the MOV to M4V. Not sure of an application to do that, but MPEG Streamclip will rewrap MOV to MP4, and then manually changing that extension to M4V might work.

    Please expand.
     
  6. Dimwhit thread starter macrumors 68000

    Dimwhit

    Joined:
    Apr 10, 2007
    #6
    So when I save an edited m4v file in QT, it's not re-encoding it? Because it sure seems like it with as long as takes to save it.
     
  7. KeithPratt macrumors 6502a

    Joined:
    Mar 6, 2007
    #7
    'Save' won't re-encode, but 'Export' will. How long is the movie and how long is it taking to save?
     
  8. Sedulous macrumors 68000

    Sedulous

    Joined:
    Dec 10, 2002
    #8
    When you "save" it creates a .mov container filled with all the fragments you've placed in it. Perhaps that is why it takes a while. I'd be surprised if it plays back reliably on mixed sets of devices. I've had trouble getting playback of mov containing multiple video sources.
     
  9. Dimwhit thread starter macrumors 68000

    Dimwhit

    Joined:
    Apr 10, 2007
    #9
    That's good to know. I have done it once before, and it played back fine, but I thought it was re-encoding it. Apparently not. Would be nice if QT could change it's container from mov to something else.
     

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