Awfully slow Timeline For Large Projects

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  • Updated 2 months ago
  • (Edited)
This has been an ongoing problem with Camtasia when you start to edit projects that are 1 hour long it slows down insanely slow rather you use a lot of stitching of track or manually cutting them. I have 24GB of DDR4 Ram and I am only at about 50% usage for total system with all programs open including Camtasia..... My CPU is not even over 50% usage and my hardrive is not being maxed out either uses about 10 - 15% usage during playback and edits. My program just crashed randomly TechSmith really needs to fix this issue. My GPU is only at like 30% usage. I can't imagine why it is moving so slow to make a stitch or cut to video. Playback somewhat stutters and slow to react to me moving it to different time point in timeline. I think going forward I can't recommend using Camtasia for videos that are 1 hour or longer. By the way I have the latest version of Camtasia so that is not the issue I checked the update option in Camtasia and no more updates for 2020. It's very frustrating and I now have to explain to my client that I won't make the deadline due to this issue.
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Allen Smith

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Posted 2 months ago

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Muscle Whisperer

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Hi Allen,
I agree with you 100%.
Until TechSmith finds a solution, I have found that the solution is to run the video file through HandBrake.
In my situation the original file was in .MTS, which is a container that Camtasia cannot handle. Converting it to an .mp4 container simply solved all my slowdown and stutter problems. I just finished a 1-hour lecture with cuts, animations etc., and it worked seamlessly.
Good luck
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Allen Smith

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That might be a good idea to run it through handbrake but the problem with that is I would be compressing the file then re-importing it back into camtasia and then upon rendering it from Camtasia once my edits are done the file size will become large again meaning I would need to run it through handbrake a second time. I think that may lead to some quality loss if I do that. They really need to fix this problem it has been an issue for many years now.
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Ed Covney

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In addition to what MW recommends, have you tried turning off hardware acceleration? i.e. Software rendering.  [Edit], [Preferences], [Advanced] tab. Change HW Acceleration to: "use software only mode"
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Allen Smith

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I don't want to disable hardware acceleration because my system has high end hardware and running in software mode is likely to result in a worse condition.
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Muscle Whisperer

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Can I give more than one "Like" to a comment??
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Ed Covney

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Allen - My CPU (9900K) is much better than my GPU (GTX 1070) so I use s/w only. And when I did that, I noticed all 16 threads are used and at nearly 100%.  

(Edited)
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Allen Smith

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That's odd when I switch to software mode it only uses 70% of CPU and everything else is not running at 100% either.  I still end up having slow timeline. I wish I had the 9900k that is a very powerful CPU but for stitching in timeline I shouldn't need a 9900k heck I can edit 4k video in programs like davinci resolve and make as many cuts as I want with no slow down, plus color grading and filters applied on top.
(Edited)
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Joe Morgan

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Unfortunately,
TechSmiths never gotten around to adding any features specific to aiding with playback.
Depending on what your doing. 4K footage can bottleneck playback .

To me, the best feature for this, is reducing playback resolution.


In Premiere Pro, you simply chose a lower resolution for playback. Just like that you're up and running viewing transitions, special effects, animations,etc.
When the video is paused, everything is at full resolution. You're not working with a blurred Proxy file.

Its not a cure all, some special effects can bring any computer to its knees.


That would be a welcome feature.
It helps virtually everyone with any computer configuration.

Improvements can be made to the editor as well.

Regards,Joe
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kayakman, Champion

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this "divide and conquer" technique can usually allow you to edit virtually any project, regardless of how large, or how complex; just exploit the Library's functionality ...

How To Use The Library To Build Out And Produce Very Large Projects 2017-03-31
https://www.screencast.com/t/2aJ7zDst2Ri

Note: the Camtasia editor does not work well with certain types of media; but if your projects are built from trec, MP4, WAV, and m4a files, this method usually works great

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kayakman, Champion

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Note: the tutorial references "link to content"; that option is no longer available in Camtasia's program options
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kayakman, Champion

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also see ...

How To Combine Multiple Small Projects Into A Single Project In Camtasia 2019 2020-03-24
https://www.screencast.com/t/TBE8zUsBf4M

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Allen Smith

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The file type is trec.... I found a way to trick the program into allowing me to use trec and split it into different files. However it is not as straight-forward as it may seem simply cutting and pasting and splitting it into separate files doesn't work. Instead you have to take the unedited file and split it before you make edits otherwise it still moves slow. It's like the program has the previous edits stored in memory unless you take raw file and split it without edits applied. Not sure how to explain this phenomenon but nonethless I found a way to fix issue.... thanks for all those who did reply to try to help with this situation.
(Edited)
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Allen Smith

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I will have to make a video demonstrating what I did so others can avoid this issue.
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Ed Covney

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Alan - think of computers as a stereo system. 50 years ago a "balanced system" meant  spending about 50% of your dollars went to speakers and 50% - everything else. A $1000 everything else and $99 speakers sounded like a $99 system.
That held true for many years. Today, folks will spend tons of money on X, nearly nothing on Y, and expect the best from both. Just like thousands before you, I guarantee that you have too much X and not enough Y.  
(Edited)