• The Mac-Forums Community Guidelines (linked at the top of every forum) are very clear, we respect US law and court precedence when it comes to legality of activity.

    Therefore to clarify:
    • You may not discuss breaking DVD or BluRay encryption, copying, or "ripping" commercial, copy-protected DVDs.
    • This includes DVDs or BluRays you own. Even if you own the DVD or BluRay, it is still technically illegal under the DMCA to break the encryption. While some may argue otherwise, until the law is rewritten or the US Supreme Court strikes it down, we will adhere to the current intent of the law.
    • You may discuss ripping or copying unprotected movies or homemade DVDs.
    • You may discuss ripping or copying tools in the context that they are used for legal purposes as outlined in this post.

How Do You Predict File Size in iMovie BEFORE Exporting!

Oct 1, 2011
Reaction score
Help! This is driving me crazy and I have tried everything & looked everywhere- including throughout these forums.

How do I tell how big a file is going to be in iMovie BEFORE hitting "Export", waiting an hour, then seeing that it is 8 freakin Gigs!!! Then going back into Quicktime export, changing the settings, & trying it AGAIN and waiting another hour!! Shouldn't you be able to change the export settings & see a prediction of how much bigger/smaller the file will be based on the changes you made??

It seems that iMovie doesnt offer this feature? You just have to "wait & see"? Seriously? PLEASE tell me this isnt true. I heard all this great stuff about Macs...

Also, on a similar note, it seems that using Quicktime to export HD video only gives you 2 options: small file size and CRAPPY quality, or pretty good quality & HUGE file size! (like 8GBs for a 7min video clip) Is there something in between? I would like to produce 5-10min HD 1080 vids for under 1GB- is that impossible on a Mac using iMovie?

THANK YOU for any help anyone can provide!

Shop Amazon

Shop for your Apple, Mac, iPhone and other computer products on Amazon.
We are a participant in the Amazon Services LLC Associates Program, an affiliate program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.