iMovie quadruples the file size. Why? And I can do something?

I captured some pictures of my video conferencing software. It was released as a .mp4 file encoded in H264 etc..

I then imported for some quick changes: it reduced to 39 from 44 minutes and added some melted transitions. Then he exported as a file using roughly the same settings. See screen capture.

What you will see as it is that the file climbed from 300 MB to 1200!  SO:

-What happened (can I avoid this?)

-Can it be solved?

Thank you!

Look at them both in mediainfo

http://MediaArea.NET/en/MediaInfo

I can see that the second file has 2 audio tracks while the first has 1. Which may explain some of the size, but I don't know if it covers all of it.

The other also has a color profile. I have to wonder if iMovie has tried using less compression when exporting. MediaInfo will show more detail, but you will have to manually compare the values and settings.

Tags: iLife

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