Create slow motion videos in VirtualDub + AviSynth

Discussion in 'other software & services' started by Mrkvonic, Jun 13, 2011.

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  1. Mrkvonic

    Mrkvonic Linux Systems Expert

    May 9, 2005
  2. ABee

    ABee Registered Member

    Jun 2, 2010
    Good info. Thanks.

    For those without AviSynth or who don't want to write scripts or deal with command prompts, my own "Rube Goldberg" method to accomplish Slo-Mo with VirtualDub:

    1. Open your video file in VirtualDub.

    2. Under the Audio drop-down menu, select 'none'.

    3. Under the Video drop-down menu, 'full processing mode'.

    4. Again under the Video drop-down menu, make your compression selection, e.g., 'Xvid MPEG-4 Codec'.

    5. Yet again under the Video drop-down menu, select 'Filters', then add VirtualDub's own internal 'bob doubler' filter.

    6. Convert the video. This video will have no audio track and have been 'bob doubled'.

    7. Close that out, then re-open the newly converted, 'bob doubled' file.

    8. Make sure 'no audio' is still selected, and still 'full processing mode' for video, with your compression choice.

    9. Remove the 'bob doubler' filter from the 'filter' selection.

    10. Under the Video drop-down menu, select 'Frame Rate'.

    11. Select 'change frame rate to (fps):', and make it half of whatever it now is. For example, if the original video frame rate was 25 fps, 'bob doubler' changed it to 50 fps, so now you want to put it back to 25 fps.

    12. Convert the video. You'll now have a video that's exactly twice as long as the original, running at half-speed, which equals "Slo-Motion".
    If you want it at 1/4 speed, then go through the whole process again using your new 'slo-mo' vid as the original.

    13. If you want audio, make yourself an .mp3 (or whatever) audio track that fits the length of the video, then add it.

    Voila! 'ABee's Rube Goldberg Slo-Mo Video'. :D
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