Why does camstasia sometimes make a an hour video 90 Mb and other times 900mb?

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So i recorded a stream of roughly an hour. it came out to 80 mb.  i didnt have to edit anything. 

Then i make another recording about an hour as well, and it does require edits, but it comes out to 900 mb under the same render settings? why is this? Do you have to do something to make all the edits converge, similar to combining layers in a paint program? This seems wildly inefficient and random, these numbers.
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Posted 2 years ago

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Joe Morgan

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It usually has to do with content.

I'll give you 2 examples from both sides of the spectrum.

If you record a solid colored background. With limited text,images, audio, etc. A large file size won't be required to store that information.

If you record a gradient or dynamically changing background. You use images and video. Perhaps music and narration as well, the files required to store that information will increase dramatically.

If you're recording similar content, the rendered videos are roughly the same duration, one video has a file size 10 times larger than the other.

Something is off. It's probably not a program error.
You may have done this to yourself. It's easy to hit the wrong button.It happens to all of us.

If after reading this, you think Camtasia may be the problem.You can contact support and bend their ears, see what they have to say.

 I'm just a schmuck with an opinion. I could be misinterpreting your problem.
Others may offer an opinion as well.


This is a Free Service............... Submit a ticket


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Regards, Joe

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That's the strange part. All videos are of the same content. The only edits I do are clipping small segments out of the video before processing. That's why it makes no sense. At first I though the program was incredibly efficient, making such small file sizes. I don't understand.

I'm some cases, similar video length and almost identical content are making videos literally 10 times more MBs.
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kayakman, Champion

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I just ran a series of short tests; I am unable to reproduce the behaviors you describe

are you making the different captures at the same dimensions?  is there a big difference in the motions/actions in the different captures?

could you do a screencast showing & describing the issue occurring; host on screencast.com?

but if you add stuff like animations, that will definitely increase file size