Hi there, Bernd. Kdenlive supports hardware encoding through custom encoding profiles. This is my profile for hardware hevc encoding with nvidia:
properties=x265-medium f=matroska vcodec=hevc_nvenc acodec=aac crf=%quality ab=%audiobitrate+'k' It would have been awesome if mlt and ffmpeg used the same format in command lines, but this is not the case. At least they are close. Unfortunately I only have intel cards, so I cannot test the intel vaapi acelleration for you. Kind regards, On 8 August 2017 at 10:35, B.M. <[email protected]> wrote: > Dear all, > > After some years without I'm getting back to video editing... I already > searched quite a lot but it's really hard to find "realiable" information, > so I decided to ask here: > > - It seems that hw accel is not available in kdenlive > > - As far as I understand kdenlive uses mlt which uses ffmpeg. ffpmeg can > use hardware acceleration for de- and encoding. So is mlt to "blame" for > missing hw accel. in kdenlive? > > - There has been a patch (bug 378832) "use of vaapi in transcoding and > rendering" which seems to tackle my question. But what did it really change > - > / what is it for? I didn't find more info on that and it's in kdenlive > 17.04, while Debian is at 16.12. and before I compile myself I'd like to > get more info. > > - Furthermore I found a thread on this list back in April "kdenlive and > mlt nvenc enabled" covering the same topic but for nvidia instead of Intel > graphics; unfortunately nobody reported back if it really works. For me it > reads like the patch I mentioned above. > > So regarding the current state of hw accel in kdenlive I'm still uncertain. > > Thank you for your inputs. > > Kind regards > Bernd -- Evert Vorster Isometrix Acquistion Superchief
