Hi guys Thanks for the tips found in this fight
With metta Mettavihari On Wed, 25 Sep 2019, 10:11 Evert Vorster, <evors...@gmail.com> wrote: > Hi there, Farid. > > I usually stay out of flame wars, as nothing good comes out of it. > However, one of the complaints against kdenlive is it's slow preview speed > on crappy hardware. > > ----------------from the war--------------- > Kdenlive can't utilize a modern PC's hardware - no matter what you throw > at it - 4 Titans, Threadripper and 128 GB of RAM - it'll be no faster than > on a Core Duo and integrated graphics and 8 GB of RAM. It can't play back > smooth 1080p video even when no effects are used. That's not what you'd > expect from a professional video editing software in 2019. > >> >> As we have explained to you before, this is an upstream problem. We are >> trying to internally find a solution but you must know that the project is >> maintained by basically one person most of the time. Welcome to the FLOSS >> reality. If you skim through the issues tracker ( >> https://invent.kde.org/kde/kdenlive/issues), you'll see that we are >> aware of your woes and are working to fix them, these things take time, >> again because FLOSS. Do you get it now? >> > ----------------end of excerpt---------------- > Original poster might be embellishing a bit. I have no problems with 4K > HEVC on my aging i7 with only 24GB of RAM. > > But, I feel you may be slightly wrong in saying that this is an upstream > problem and that there is not much we can do about it. > This is not entirely an upstream problem, and there are things that can be > done about it: > To make editing and preview smooth on older hardware and emulators, use > proxies and this neat little trick laid out in: > > https://bugs.kde.org/show_bug.cgi?id=369080 > > It is a bit long-winded, my apologies for that. > In short, to massively improve preview performance, drop the project > resolution. Like, way down, to VGA size.. > Once you are ready to encode, bump it up to your desired resolution. > > I have asked for JBM to take a look at having the preview resolution tied > to the preview window size, or proxy resolution (I mean, why would you want > to have a higher resolution than the footage that you are playing back, or > the window displaying it), instead of the project resolution, but he is a > busy man and must have forgotten about it. > > To speed up render performance, make a kdenlive profile that does hardware > encode. I have had some successes with it, but then again I don't care how > long it takes for something to encode... I walk away from my computer and > go do something else while it is working away. > > Kind regards, all. > Thanks for all the hard work you are putting into this wonderful > software... please don't stop! >
