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Activity Forums Adobe After Effects Exporting a 5120 X 768 file into 5 seperate 1024 x 768 files

  • Exporting a 5120 X 768 file into 5 seperate 1024 x 768 files

    Posted by Donnie Mallkerb on May 20, 2009 at 4:15 pm

    Hi everybody

    I’m wondering if anyone can help me.

    I’m producing video for a panoramic multi-screen show split over 5 projectors. Each projector is ran from its own seperate PC and is controlled from a master vvvv patch. The content for it has to be created at 5120 x 768 but then split into 5 individual 1024 x 768 movies and put onto each corresponding PC.

    If i make a composition 5120 x 768, what would be the easiest way to break that wide composition up into 1024 x 768 files? Is there an automated process in after effects that can do this?

    I guess I could just open a 1024 x 768 composition and drag the 5120 x 768 composition or movie file into that and move it across each time and export those… But i’m unsure how accurate that would be, and I have a lot of content that needs to be split so time is a major factor here aswell and that process would take a long long time.

    I hope someone can understand what i’m asking and help me out.

    Maybe someone knows of an after effects automated process, or a standalone application that can handle exporting video in a split fashion…

    I’m on Mac btw.

    Thanks in advance folks

    Thomas Leong replied 17 years ago 4 Members · 4 Replies
  • 4 Replies
  • Donnie Mallkerb

    May 20, 2009 at 5:21 pm

    Hey, thanks for the quick reply.

    Yeah, i had thought of that method, but my problem is I have around 150 – 200 clips to split. I think this will take me weeks to complete. I was just hoping there might be a method in which this could be done quicker.

    I had searched a little around the forum, and spotted something that might work.

    If I created 5 different cameras within that composition, each camera viewing each 1024 x 768 section, and rendered each of the camera views seperately? maybe then I could just duplicate the comp and just replace the 5120 videos and repeat the process. without having to try and accurately position things. Havent yet tried this, so unsure it will work.

    again, if it does, this is still going to be quite time consuming.

    Anyways, I thank you very much for you’re prompt response.

    Maybe someone knows of anything automated to speed this process up?

    I just thought….. once the video is lined up in each 1024 comp, I can duplicate each of them and then just use alt and drag a clip to replace video in each comp. That might be easier! and save moving into place each time!

  • Chris Wright

    May 20, 2009 at 7:48 pm

    google image splitter for mac. then just batch process a folder and in a few seconds you’re done. I’m pc so I use batch it ultra.

  • Walter Soyka

    May 20, 2009 at 8:00 pm

    Hi Donnie,

    I use the same method Dave has described when I’m working on widescreen or multi-screen material in After Effects.

    However, if you’ve already got a heap of clips at 5120×768, you could just create a series of 5 presets, one for each projector, for a compression program (like Episode) that performs the crop. This would make it a very simple batch process. Drag, drop, start, and wait.

    Walter Soyka, Principal
    Keen Live, Inc.
    Presentation, Motion Graphics & Widescreen Design
    RenderBreak: A Blog on Innovation in Production

  • Thomas Leong

    May 21, 2009 at 2:53 pm

    AFAIK, the common way to do this is not via Export, but via the Render Queue, within AE. No 3rd party app is required.

    In the Render Queue, you can batch and crop the 5120 x 768 to whatever you want, name the destination files (eg. Video1_0-1024.xxx, Video2_1025-2048.xxx, Video3_2049-3072, etc.), then render away.

    The crops are either –
    0 – 1024
    1025 – 2048
    2049 – 3072
    3073 – 4096
    4097 – 5120

    or –
    0 – 1024
    1024 – 2048
    2048 – 3072
    3072 – 4096
    4096 – 5120

    It depends on whether position 0 is considered a pixel or not. My bet is the first option ‘cos that = 1024 pixels across all the files.

    Thomas Leong

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