I recently started watching my CPU's temperature (among other things) while I'm working due to some unrelated issues and crashes. What I noticed was that, for some reason, Kdenlive heats up my computer more than other programs. For example and reference, I broke a gimp script and had it overworking my computer. This was running for several minutes with all 4 cores mostly at 100% and never less than 3 at 100 with the other working as well. In fact, what it was doing even caused all my other programs to lag. The entire time this was going, my temperature stayed under 80 C. When I rendered a short video (a sequence of still images, each lasting 00:00:00:02 and rendering at 30fps), the temperature never dropped below 80 C.

Any ideas what could be the problem, and what could possibly be done to prevent it to reduce the wear and tear on my laptop?

Some system information (feel free to ask if I missed something):
Kubuntu 17.04 (recently cleanly installed) 64-bit
Plasma 5.10.3
KDE Framework 5.36.0
QT 5.7.1
Processor: i7 quad core 2.5 GHz
Graphics: NVIDIA GeForce 940M
Proprietary NVIDIA drivers, version 375.66
MLT version 6.5.0
Kdenlive Version 17.04.1 (from kdenlive stable repository)

I've been using it set to use GPU processing for playback and I've tried with 2 and 4 threads (both heated the computer up to 80-90 C, while the processor is not rated for anything above 100).

When I render my fan goes to top speed quite quickly. And I have seen my temperature also at 90C when rendering often. But it stays there and while it is below the magic 100C, which is also the upper limit for my CPU, all is fine. It is like driving a car with 90% of it's top speed - nothing to worry about.

Actually, it's recommended to avoid getting that close to the max temperature. I'd imagine this would be especially true for a laptop like I am using. While it is low enough the processor won't be permanently damaged (at least from a short term use), heating up components to excess especially for longer amounts of time (as I would be likely to do, since I am making youtube videos not just rendering those gifs into video form) can warp components. Even discounting that, the more time it spends on the higher end of things the faster it will wear out. 75 isn't even good for it, and 80 is within 20 degrees of the max - the point at which it will force shut down to prevent melting.

While I know short term or occasionally running at high temperatures won't kill my computer, and I"m not panicked or thinking I can't use the program because this is happening, I'd much rather have methods to keep it controlled to prolong the life of my computer (especially since there's no certainty I'll have another when it eventually dies) than just have it brushed off because it hasn't already hit critical points.