Screencast size explode when cut down and exported from Premiere Pro?

Forum|Forum|8 years ago
September 26, 2017
2 replies
522 views

I've recorded a screen cast from QuickTime Player that is 02:43 min. long and has a file size of 33.4 MB.

Now, I've imported it into PP CC and trimmed it to 01:23 min., exported it, and now the file size is 477,4 MB ... WTF!?

Yeah, I know this has to do with the output settings one selects. I've tried them all ... believe me.

But why is it, that in 2017 I cannot export a screen cast back out in the same compression format, that makes sense in relation to input size getting equally lower when actually cutting large parts of the movie away!?

Or put in another way; how do I not increase the file size on such a simple project (what settings do I use)?

This topic has been closed for replies.

E

excited_Genie16B8

Legend

File size = bitrate x duration.

To get a smaller file, you need to reduce the bitrate, create a shorter program, or both.

You've done the latter. Now you need to do the former.

Richard van den Boogaard

Community Expert

Can you please provide us details of the codec you've chosen? Please share a few screen shots...

B

blaasvaerAuthor

Participant

Now, this is the input:

And no matter WHAT settings I choose in the output I get nowhere near the file size I use as input. Now QuickTime Player must have some special version of the H.264 codec used for screen recordings. And the claim that file size = bitrate * duration simply cannot be accurate.

If QT Player can record with compressions like this (it's a toy), why can't PP CC not come anywhere close?

E

excited_Genie16B8

Legend

the claim that file size = bitrate * duration simply cannot be accurate.

Think about it.

What it a file made of? What is "bitrate"?

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