As you can understand there are many factors about rendering time: video format, type of decode, effects, cuts, type of encode, cpu performance. Unfortunately, We can not compare a Playback by VideoPlayer, (e.g. VLC, mplayer) and by NLE Timeline. And many Videoplayers use hardware decoding using graphic card . Because I use an old Laptop (Charlie) I have to use Proxy for a smooth playback in the timeline. For a FullHD Format Project my Scale Factor for Proxy is 1/4 (Rescaled to Project size = unchecked). Rendering are long but my Charlie works into the night when I go to sleep. ;-) IgorBeg PS: Yes, that is not the answer you wanted to hear,... sorry. Il 30/01/2023 11:16, Stefan de Konink via Cin ha scritto:
Hi,
I am currently trying to render a feature which is 57min in duration. I noticed that cinelerra in this project has an enormous problem rendering two video's stacked on top of eachother. There is (as far as I am aware of) no compositing intended, no projector movement, top track should have priority over lower tracks.
Even the compositing window is unable to achieve any smooth framerate on these pieces, unless I disable either ones of the track. The framerate achieved is less than 1 fps.
Even when all plugins are disabled, it looks like there is some composition in running. When I manually mute all sections where there is a B-roll, performance is regained. Could someone try this with some D3200 content stacked on top of eachother?
If it would help I am happy to create some projects 'as bugs' for QA-purposes.