Camtasia Studio Ultra Slow speed?

[Vistangel]

Hello maybe someone could help me. Camtasia Studio 6 used only 60% of my old i7 laptop to render (1.6ghz, 4 cores) and now I have a new PC with i7 4790 (3.8ghz, 4 cores) and upgraded to camtasia studio 8. Rendering in every other program is 3x-4x times faster than my laptop. However Camtasia renders at the same slow speed, now with CPU utilization of only 20%. A 30 minute video takes up to 2 hours to render just like with my old laptop. What the***? I bought a new PC to render faster not to use my faster processor with 20% utilization instead of 60%.
So what can I do to make camtasia use 100% of my CPU? This speed ain't right at all. And as you can see, it was never the problem of my processor but that camtasia didn't use the 100% of processor power.
I tried a 30 minute h.264 mp4 1080p video in camtasia and it's been rendering it for 1 hour and it's less than half way in. For example Premiere Pro renders the same video in about 8-10 minutes with 100% CPU usage, same settings.

 

[3D Jed]

I've just done a 1080p render test with Camtasia 8 on an o/c 2600K 8GB system and cpu usage showed around 20%. See screenshot - the Camtasia codec doesn't seem to use all the threads. Maybe your old pc was using all 4 cores, but the new cpu can't use all available threads. Premiere Pro and similar progs will use all threads.

My test was a 1 minute screen record tutorial type presentation, so not much movement. The 1 min clip took 2m 30s to render with settings h.264, 1080p, 30fps, 5 sec key, level 5, 100% quality. Final bitrate was 15Mbps.

I don't know your settings/content, but if you were recording fast movement (ie games), your long render times might be about par for the course. I believe you can use other output codecs eg Quicktime that may be better threaded, but I've never tried that route. Maybe look on a Camtasia forum.



BTW - re : rendering, here's a snip of my little render farm - 6 * i7's = 24C/48T

 

[Vistangel]

I've just done a 1080p render test with Camtasia 8 on an o/c 2600K 8GB system and cpu usage showed around 20%. See screenshot - the Camtasia codec doesn't seem to use all the threads. Maybe your old pc was using all 4 cores, but the new cpu can't use all available threads. Premiere Pro and similar progs will use all threads.

My test was a 1 minute screen record tutorial type presentation, so not much movement. The 1 min clip took 2m 30s to render with settings h.264, 1080p, 30fps, 5 sec key, level 5, 100% quality. Final bitrate was 15Mbps.

I don't know your settings/content, but if you were recording fast movement (ie games), your long render times might be about par for the course. I believe you can use other output codecs eg Quicktime that may be better threaded, but I've never tried that route. Maybe look on a Camtasia forum.

View attachment 327068

BTW - re : rendering, here's a snip of my little render farm - 6 * i7's = 24C/48T

View attachment 327072

Thanks for the reply. I used the same settings lol but with level 4 quality. The bad things is if I save the original .avi file and not render with camtasia, I can't use premiere pro to edit the video because it lags and has some frame issues. So it triples the editing time. I tried other codecs with worse results.
But I could make it use 80% of the processor! Here's what I did: I noticed if I produce instantly the video after recording, it resets the resolution to 800x600 instead of 1080p. It seemed weird and even after I set it to 1080p and started rendering, it used 20% CPU. BUT when I went to produce then cancel, the Camtasia Studio popped up. I deleted the video from the timeline and put it back. Started rendering and bumm 80-90% processor utilization Although it's still slower than most video editors, now it took 18 minutes to render a 30 minute long video with same settings.
Btw nice render farm you got there. 24 cores