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September 26, 2016
Answered

Why is my exported file size so big?

  • September 26, 2016
  • 11 replies
  • 114821 views

Hi

I am no expert but do understand codecs, bitrates, formats etc. and usually have pretty good results when exporting footage. However, today I was editing a webinar which is basically screenshots and voice over. The source file (.mp4) is about 40MB but when exporting the file size jumps to 3+GB when using .h264 codec and matching the source file.

After many attempts and tests the minimum export size I could get while retaining the source quality was about 600MB which is more then x10 times the imported source.

Why does it happen? it's only a static 10/fps progressive footage.

Thanks

Mic

    Correct answer Ann Bens

    Your source footage is 29.851 fps (screencapture footage?)

    Your sequence is 10 fps?

    and the final export is 25 fps.

    That is a mess.

    You should keep everything the same if possible.

    What is the purpose of the final export.

    Post a screenshot of the mp4 in MediaInfo in treeview here on the forum

    11 replies

    Show previous replies
    John T Smith
    Community Expert
    John T SmithCommunity Expert
    Community Expert
    September 26, 2016

    My only GUESS is that your source file is highly compressed and your export is to a codec that does not have the same compression

    Buy a dry, flat sponge (highly compressed) and add water to create a less compressed version

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