On Fri, Sep 29, 2017 at 09:34:14AM +0200, Evert Vorster wrote: > Hi there. > > There was a little trick that I was doing on a virtual machine some time > ago, where I would set the project resolution to the proxy resolution, and > my proxy resolution was exactly the display window resolution, so I was > avoiding any scaling whatsoever. Editing was indeed very, very fast, even > on a single CPU virtual machine. > I would then set the project resolution to the desired resolution before > doing the final render.
Can you share details how you did this? I tried to achieve the same but failed. For now I just set the project profile to 720p25 initially and will increase it to 1080p25 once timeline is almost ready and then setup effects and transitions. > The drawback of this approach is that title clips are produced at the wrong > resolution, and pan/zoom was affected. I suspect several effects will not like changing project profile or resolution... > In short, I agree, there is a lot of speed gain to be had here, which would > open up or improve the experience of video editing for a lot more people on > older/slower hardware. At work I have edited a few short clips on more modern Intel i5 laptops with Intel graphics chips and the experience on timeline was not exactly smooth. It seems to be bound to a single CPU and only one or maybe two threads. Maybe this is also a limitation in mlt. But on the other hand previewing clips from project bin is fast and glitch free, no dropped frames etc. -Mikko
