So far I have not managed to render the full time line. At some (random) point Kdenlive bumps out with no error message. What would be nice (for debugging) was it did not take hours only to get up to that point of no result. What do you do to speed up the rendering process?
- Rendering threads = 8 but System Monitor shows CPUs oscillating around 50% load with only the occasional spark up ... I wouldn't mind if the CPU capacity was more solicited.
- RAM: out of the 4GB available it uses depending on rendering format MPED ~2GB, H264 ~3GB only. Especially for MPEG there's still some untapped capacity ...
So - what are you pro's doing to speed up rendering?
Intel® Core™ i7-2600K CPU @ 3.40GHz × 8
Embedded HD3000 GPU
4 GB RAM
Ubuntu 12.04 LTS
~10h rendering for ~1h worth of mkv remuxed mts clips
Thanks!
Intel® Core™ i7-2600K CPU @ 3.40GHz × 8, embedded GPU HD3000
Ubuntu 12.04 LTS
Kdenlive Version 0.9.2
MTS avchd clips ~1h40 worth of video
Rendered to H264 (threads=8)
- Ubuntu 12.04 LTS 32-bit: would never render to the very end but managed to render over 10 hours (kept System Monitor to see if it was still working). CPU load hoovered around 30-50%, occasional sparks into higher ranges.
- Stability issues: probably from OS polluted by wrong library versions coming from testing lots of different video tools. Only re-install of Ubuntu allowed me to redress this.
- Ubuntu 12.04 LTS 64-bit (the re-install): cut rendering time to about 4 hours - wow! CPU then hoovered in the range of 60-80% load.
- HDD: Experimental install was one a spare disk, then put on my normal PC with SDD. Noticed that CPU load went up to 100%when adding clips and creating thumbnails and proxies. Though no impact for rendering.
- RAM: Adding clips, creating thumbnails and proxies seemed to use more RAM (over 3GB but never above 3.6GB), rendering contended itself to less (~2.5-3GB RAM). PC has 4GB RAM, added some spare RAM to see what it does but it does not use more than before.
I did not see clues about how performance could get optimised any further.