Bug 382966

SUMMARY
I guess I'm formalizing something I'd desired for Kdenlive for a long time. There's massive processing power in GPU's that Adobe Premiere, Sony Vegas, and Final Cut takes advantage of to provide smooth playback while editing with no drop in playback framerate. Kdenlive would gain a huge advantage to be able to acquire this feature. Details would include:
- a checkbox to enable GPU Acceleration somewhere in the Kdenlive settings (for PC's that have Nvidia/AMD graphics and the proper drivers installed)
- When enabled, Clip Monitor, Project Monitor and Timeline effects get piped through the GPU, not the CPU.
- When enabled, Kdenlive renders out a final video using the GPU, not the CPU.
- POSSIBLE feature would be to be able to enable which (or all) GPU's you would like to use, if the PC has more than one graphics card on board.

This is super important for editors to reduce editing time and increase workflow.

SUGGESTED WHILE USING
Kdenlive 17.11.70 (via ppa:kdenlive/kdenlive-master)
Kubuntu 17.04 x64
KDE Plasma 5.10.4 (via ppa:kubuntu-ppa/backports)
KDE Frameworks 5.36.0
Qt 5.7.1
Linux kernel 4.10.0-28-generic
Nvidia GTX 1080 graphics card
Nvidia 384.59 proprietary graphics driver