Editing a 100MB video file turns into 1.5GB file!! How to control size?

[GoodEnough]

Vegas Movie Studio 15
REGULAR edition, Not platinum

I am editing a video file of a Zoom 30 minute video conference output
The file is already optimized to be only 106MB (well done Zoom!)
1366x768
Datarate = 358 kbps
BitRate = 411 kbps
25 fps

I edit a few minutes out of the video file in Vegas Movie Studio 15
I render the edited video
The Vegas video file is now a massive 1.6GB
1920x1080
Datarate = 7575 kbps
BitRate = 7764 kbps
29 fps

I have no control over these settings in v15 basic.

I opened the 1.6GB file in Handbrake.
Picked Fast 1080p30
That rendered a file back to 114MB, which is fine.
But, this extra step takes a long time.

What are my options?

[DB83]

I would contest that you do have some control over the output settings even in your basic version of Vegas.


At the very least there would be no sense in re-encoding a file of 1368*768 to 1920*1080 unless you want to lose definition. Likewise it makes little sense to re-encode a 25fps video to 30fps which results in duplicate frames etc.


I do not have this program but I do suggest you look more closely at it and not just click blindly. Even so 358 kbps is rediciously low for a video of these parameters.

[GoodEnough]

Those 2 settings have almost zero effect on file size.
It is 99% bitrate.

[Cornucopia]

You're right. And wrong.

It is 100% the bitrate. Universal formula: Filesize = Running Time * Bitrate. The end.

However, what DB83 was talking about in those settings, was retaining the optimal QUALITY for a pariticular bitrate.

Scott