why mpg file exported from 2013 plus and 2014 plus so different in size?

zhou666 wrote on 1/24/2014, 2:19 PM

I have Movie edit pro 2013 plus and 2014 plus. To my surprise the exported mpg file from 2014 plus is shockingly large, taking about one and half hours for a clip of about four minutes. I moved the same file with exactly the same editing bits to 2013 plus the exported size is hugely different. For example: the same file is respectively 775MB at 2014 plus but 172 MB at 2013 plus. Is this some kind of feature of 2014 plus or there is a setting allowing variations? The quality of the video (from the two sources) is not so noticeably different.

Comments

gandjcarr wrote on 1/24/2014, 4:31 PM

Hi,

That file size difference is 4 and a half X.  There must be some difference in how your are exporting the file.  If you exported 1 file as .mp4 and the other as .avi, uncompressed .avi etc. You will get huge file size differences based on the format and the compression used for that format.

The screen shot below shows a 7 second video exported to three different formats and the file size difference between them.

Huge difference a forma makes. 

George

johnebaker wrote on 1/25/2014, 3:45 AM

Hi

I would suspect your export settings are different - did you select the same export preset for mpg or have you customised one of them?

Look at the Export dialog below - click the Advanced button

 

Ths will open this dialog - check that the bitrate settings are the same in both versions of MEP

 

HTH

John

Last changed by johnebaker on 1/25/2014, 3:45 AM, changed a total of 2 times.

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gandjcarr wrote on 1/25/2014, 2:45 PM

Hi,

John is absolutely correct and I failed to mention it.  I assumed that you said that the bit rates are the same so perhaps incorrectly thought that you were exporting in a different format.  My example showed different export formats but you would get the same or similar results if the bit rate on MEP 2013 was different in MEP 2014.  The default bit rates could vary so if you did not check in the "advanced" section as John suggested, you could be comparing apples to oranges especially if both export files were .mpg.

George

ps. If you want reasonable file sizes and pretty decent quality, use the .mp4 container with a bit rate that you can live with.