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Thread: Join/edit two VOB:s with same resolution without re-encoding

  1. #1
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    Join/edit two VOB:s with same resolution without re-encoding

    Hi,

    I have two VOB:s with a same resolution, and I would like to use some of the contents of VOB1 and paste them into VOB2 where the same footage is missing. Then I want to save the resulting edited VOB2 in a same resolution WITHOUT encoding again (I want to preserve the video quality).

    I read that it should be possible to do it, because the VOB:s have same resolution.

    I have been looking into kdenlive and avidemux but haven't manage to do it with these programs (kdenlive re-encodes and avidemux doesn't allow me to copy and paste between the VOB:s).

    Does anyone have any suggestions on the workflow and applications needed to accomplish the above?

    Thank you in advance.

    Kind Regards,
    Veroslav
    Intel Core i7 860 2,8 GHz - 8 GB DDR3 - 1,5 TB SATA 3G - nVidia GeForce GTX 260 1,8 GB - Ubuntu 12.04 Precise Pangolin

  2. #2
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    Re: Join/edit two VOB:s with same resolution without re-encoding

    Code:
    mencoder -oac copy -ovc copy -o 2.vob 1a.vob 1b.vob
    this might do it for you altho i think it reencodes [not sure] works well anyway


    2.vob is your new file 1a and 1b your input
    Last edited by shantiq; June 27th, 2012 at 09:57 AM.
    Linux is Latin for off-the-beaten-track
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  3. #3
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    Re: Join/edit two VOB:s with same resolution without re-encoding

    Shantiq I don't really use mencoder, but wouldn't that just give you a video with two video streams? Rather than placing one after another.

    IIRC, .VOB files are actually a variation of MPEG2, so you should be able to use cat. From the commandline, try

    cat input1.vob input2.vob > output.vob

    (this can have an arbitrary number of inputs)

  4. #4
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    Re: Join/edit two VOB:s with same resolution without re-encoding

    Quote Originally Posted by evilsoup View Post
    Shantiq I don't really use mencoder, but wouldn't that just give you a video with two video streams? Rather than placing one after another.

    IIRC, .VOB files are actually a variation of MPEG2, so you should be able to use cat. From the commandline, try

    cat input1.vob input2.vob > output.vob

    (this can have an arbitrary number of inputs)

    no Evilsoup Mencoder does what the asker wants

    check your cat file you will see you have only copied the first file cat works with mp3 and ts but mostly does not work with sound and video files
    Last edited by shantiq; June 27th, 2012 at 08:38 PM.
    Linux is Latin for off-the-beaten-track
    what I like MOST about our Ubuntu ... The Community
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  5. #5
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    Re: Join/edit two VOB:s with same resolution without re-encoding

    Hi again,

    thank you both of you, for your replies. What I am looking for is some kind of video editor where you can load both of the mentioned VOB:s, cut and join them, and export the result to a new VOB but without re-encoding.

    I will have a look at kdenlive in more detail, I assumed that the DVD/VOB export option always encoded the resulting file again, but perhaps that is not the case when the input resolution is the same for all the files.

    Perhaps someone with more experience with kdenlive knows more?

    Thanks again!

    Kind Regards,
    Veroslav
    Intel Core i7 860 2,8 GHz - 8 GB DDR3 - 1,5 TB SATA 3G - nVidia GeForce GTX 260 1,8 GB - Ubuntu 12.04 Precise Pangolin

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