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  1. Hello.
    I am looking for a program which enables to load TWO avi movies and previews them in two separate window ONE UNDER ANOTHER, and previewing frame by frame would be great.
    In VirtualDub isn't it possible?
    Do you know any ?
    I have two video files with different length and want to know what are the diffrerences
    Thanks!
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  2. With VirtualDub you will need to use an AviSynth script:

    v1=WhateverSource("file1.ext")
    v2=WhateverSource("file2.ext")
    StackVertical(v1,v2)
    Even better for comparing two videos:
    v1=WhateverSource("file1.ext")
    v2=WhateverSource("file2.ext")
    Interleave(v1,v2)
    This way you can flip back and forth between the two with the left and right arrow keys.
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  3. Thanks, but I don't quite follow that...
    How to use this code?
    How to load it in VirtualDub?
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  4. http://avisynth.org/mediawiki/Getting_started

    After creating the script you open it in VirtualDub as if it was a video file.
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  5. Thanks.
    I created script.avs

    Code:
    v1=AVISource("M:\A.avi")
    v2=AVISource("M:\B.avi")
    Interleave(v1,v2)
    but VirtualDub errors with following :

    Name:  screenshot_155.JPG
Views: 249
Size:  16.6 KB

    I don't get this error...what I did wrong ?
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  6. What dimensions are your videos ?

    use mediainfo if you don't know

    They have to be the same dimensions


    If they are different dimensions you can pad the borders to make them the same
    http://avisynth.org/mediawiki/AddBorders

    You can label them with subtitle as well (this helps identify if videos are very similar)

    eg.
    Code:
     
    v1=AVISource("M:\A.avi").subtitle("videoA")
    v2=AVISource("M:\B.avi").subtitle("videoB")
    Interleave(v1,v2)
    Last edited by poisondeathray; 16th Sep 2011 at 13:59.
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  7. They are different, indeed.
    I didn't know that it matters....because I was planning to insert audio from avi with poorer dimensions to one with better quality...having the same dimension is pointless to this operation.
    OK...so now I will convert one avi to the same dimensions as the second. Then will try
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  8. Originally Posted by ralf07 View Post
    They are different, indeed.
    I didn't know that it matters....because I was planning to insert audio from avi with poorer dimensions to one with better quality...having the same dimension is pointless to this operation.
    OK...so now I will convert one avi to the same dimensions as the second. Then will try
    ?

    I don't understand what you are trying to do? Are you doing this just to preview? ie To compare 2 versions of a single video? If so, read the edit above, you can just add black borders to make them even , or resize in the script
    http://avisynth.org/mediawiki/Resize

    If you only want to swap the audio, you can use avimuxgui or vdub . You don't have to re-encode or change dimensions

    If you re-encode using lossy format or resize you lose quality
    Last edited by poisondeathray; 16th Sep 2011 at 14:06.
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  9. Yes, you can just resize, add borders, or crop one of the videos to make the sizes match:

    v1=AVISource("M:\A.avi").subtitle("videoA")
    v2=AVISource("M:\B.avi").BilinearResize(v1.width, v1.height).subtitle("videoB") Interleave(v1,v2)
    Of course, if one of the videos is widescreen and the other is fullscreen one will be distorted. But that's probably fine for your purposes.
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