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  • What size is acceptable when resizing video?

    Posted by Chris Wright on January 8, 2009 at 7:38 pm

    My final video is 720 x 480. But I read somewhere that if I resize the video to half it’s original size for web(for example, in Flash Video Encoder), that it should be resized to 320 x 240. That seems off to me since 720/2=360. So I thought the resized video would be 360 x 240.

    Also, if I want to resize the video to somewhere between it’s original size and 1/2 size, what would the appropriate dimensions be? 480 x 320? 480 x 360? 540 x 360?

    Dave Friend replied 17 years, 3 months ago 2 Members · 1 Reply
  • 1 Reply
  • Dave Friend

    January 8, 2009 at 10:44 pm

    [Chris Wright] “t should be resized to 320 x 240. That seems off to me”

    Chris,

    By going to 320×240 you are correcting video’s .9 pixel aspect ratio to a computer’s square pixel aspect ratio.

    You can use a starting size of 640×480 to figure your reduction.
    If half size is figured 640 * 0.5 = 320 then if you wanted 2/3 of the full size it would be figured 640 * 0.66 = 422.4 I just round the decimal remainder and it seems to work.

    I’ll leave the vertical calculations to you.

    Dave

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