Hi all, Well so I can expect hw accel for ENcoding to work. What's about DEcoding? Can that be enabled as well?
Is it correct that direct raw copying (no de- and re-encoding) is not possible? Would be soooo nice (speedup & image quality) for all the clips which rest unchanged! I know that this is a missing feature on the mlt side; having a background in programming myself I know how ugly a workaround can be, but: did you dev's discuss that in the past? As I said, only for unchanged clips (I have 4K editing in mind...) Best, Bernd PS: I will see how to compile ffmpeg with hw accel enabled. Am 8. August 2017 14:31:13 MESZ schrieb Vincent Pinon <vpi...@kde.org>: >Hello, > >Note that you need to have FFmpeg built with vaapi or nvenc support, >which is not the case of Debian package. >I don't know what's needed for Intel, but for NVidia you have to >download a SDK linked to closed-source driver, providing personal >information: showstopper for me (and many packagers) :\ > >Please let us know of any progress on your side. > >Evert, did you try to share your custom profiles using "HotNewStuff" >function in Kdenlive? ;) > >Vincent > >Le mardi 8 août 2017, 12:47:31 CEST Evert Vorster a écrit : > > >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. <b-m...@gmx.ch[1]> 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 regardsBernd > > >Evert VorsterIsometrix Acquistion Superchief > > > > > > >-------- >[1] mailto:b-m...@gmx.ch -- Diese Nachricht wurde von meinem Android-Mobiltelefon mit K-9 Mail gesendet.