> try to render first exr sequence (from any source) . Set EXR compression to some cpu intensive choice.
> Then load this sequence and in rendering dialog only change name of sequence, so it will create new set of images.
> Try last step with patched and unpatched cingg.
These are exactly the steps I took. I used "none" or "RLE" compression
with the same results. I also tried rendering a tiff sequence still
with the same results (21 fps).
may be slow cpu on my tablet makes bigger difference? Note, I used ZIP compression.
There is a speed-up on the second render, to the point of almost instantaneous when very minimal changes are made even on a relatively new laptop (only 4 years old). And a speed up when an effect is added to 1/4 of the video.
Andrea, you can try these exact steps:
1) mkdir /tmp/ppm1 and mkdir /tmp/ppm2 and mkdir /tmp/ppm3 in a window
2) start cinelerra (with the 2 patchsets having been built in) then load with replace a video
3) render that video entire project using ppm sequence (render to /tmp/ppm1/a.ppm)
4) load just the ppm sequence you created in step 3 (load with replace /tmp/ppm1/a.ppm)
5) now just render this using ppm sequence and this time to /tmp/ppm2/a.ppm
it should be really fast
6) for testing purposes, add an effect to a small section of the video loaded in step 4 and now render to /tmp/ppm3.a.ppm and it will still be faster than the original ppm1 but not as fast as in step 5 because it can only direct copy the unmodified portion of the video as opposed to where the effect is