Thanks for the response Einar, To be clear, I wasn't surprised that the filter added time to the rendering... of course more calculations = more time. I was just surprised that it doubled the amount of rendering time when adding similar effects in other NLE's (Kdenlive) did not seem to have such a pronounced effect on rendering speed. Obviously Cinelerra is using different algorithms for its filters which explain the difference I suppose.
Thanks for your answer and development work on Cinelerra, 2.2CV is by far the most reliable version I have ever used. > On Mon, May 7, 2012 at 12:08 AM, AV Linux <[email protected]> wrote: >> Hi, >> >> I'm working on an HD project (1280x720p) and am using the ffmpeg pipe to >> render to H.264 Video. I've done this quite often and find the Rendering >> Speed is acceptable for my hardware. On this particular project I'm >> using >> the Brightness Contrast filter and although the playback in the >> Compositor >> Window doesn't seem to be slowed down by the presence of the filter the >> Rendering is taking at least double the time. >> >> Is this to be expected? Are the filters multithreaded or not? Just >> Curious... >> > Of course it is expeted. There is about 3 million additional > calculations done one every frame. > > Most of the filters are multithreaded including the Brightness Contrast. > > Einar > > _______________________________________________ > Cinelerra mailing list > [email protected] > https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra > _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
