Re: 8K Support?
wt., 28 lip 2020 o 23:27 Dan Dennedy napisał(a): > > On Mon, Jul 27, 2020 at 6:19 PM Tobiasz Karoń wrote: > >> I would personally not bet on MLT improving here. It's a very old >> framework with a legacy that's holding it back, and it doesn't seem to get >> much development done. I think it'd be best if video editors simply stopped >> considering it a good option. We have way too many "front-ends" to MLT all >> being held back by it's limited design. >> > > Do not listen to this nonsense. He does not have a software engineering > background. Fun fact: Kdenlive is older than MLT! But both are younger than > most popular commercial NLEs. Not bad for a few developers working part > time. The development of MLT speaks for itself through the git log and > https://mltframework.org/blog/. Development is done primarily by the > Shotcut and Kdenlive developers, and these statements are disrespectful to > the hard work of the volunteers. > I'm sorry, I didn't mean to be disrespectful towards the developers or their work. I am no developer and I could never make anything like MLT, Kdenlive or Shotcut myself. My skewed view on MLT has formed from many years of using software built on it and from talking to other knowledgeable people (who are developers themselves). *I don't think my input should be rejected simply because I'm a user, not a developer.* I am not criticising any of the software to be rude or make someone feel bad, or make myself feel better (what makes me feel better is good free software!). I do it, because I care about the free software scene, and I want it to grow. That's also why I keep using it, even when I'm constantly nagged to use proprietary software to make my life easier. I value other things however. It seems to me that you feel personally attacked by my view on MLT. If that's the case - I am sorry, but that's not my intention. (Also - I've been in touch with the Kdenlive team as well helping them spot and fix the issues I had with the software) > > >> OpenShot tried to go beyond MLT, but... that apparently didn't go too >> well. >> >> I'm glad Kdenlive has started work to make it possible to implement a >> different back-end (maybe some cooperation with the Olive team could >> occur?) - and also >> > > Make multiple Qt frontends for the same engine. Where have I seen that > before? Yes, I am guilty of the same with Shotcut, but I had good reasons. > At the time, I wanted to get MLT working cross-platform including the new > Qt 5, KDE was not yet ported to Qt 5, and I did not want to worry about > KDE4 dependencies. Eventually, KF5 happened, and I continue with Shotcut as > a revenue source, to support its users, and to drive MLT development. At > least we collaborate a lot by using MLT and sometimes borrowing bits of > frontend code with each other. > Well, I have nothing against that - if that works for you and Shotcut users - that's great. It didn't scratch my itch though. > > >> implementing Open Timeline IO. I hope we can create some synergy between >> software using such open data exchange standards. Especially since they are >> used in the industry - which could help "serious" people consider using >> libre software. >> >> There's a long way to go before that's gonna be possible, but I think >> we're on a good track. >> >> I've been using Olive Video Editor for the past year or so (also limited >> to 8-bit color, at least for output - the processing is done 100% using >> GLSL so it's in a good position to develop further from that though - I >> even made my own effects for it). >> > > Similar to the same thing Movit provided for MLT except Movit uses 16-bit > float textures, which can support a 10-bit integer input and output. > Well, that'd be great, though I personally have had zero luck with Movit in Kdenlive so far (didn't try it recently to be fair though). > Otherwise, most GLSL code is using 8-bit textures including, I think, > Olive. Or was but no longer? I am not tracking it closely. Alas, there is > more MLT-Movit integration work still required to support 10-bit end-to-end. > You're right - I've just tested it and Olive 0.1 does all processing in 8-bit as well, because once clipped whites cannot be restored by applying reverse exposure gain. > > >> There's a rewrite going on that incorporated Open Color IO for flexible >> color management, also a node editor for fine grained control of all the >> processing being done (in the future this should allow for insanely >> powerful compositing but also reusing and sharing your own effects etc.), >> There's also a timeline proxy being implemented that stores frames in EXR >> files (an SSD for a scratch drive would be very recommended - I should test >> that more myself). I believe it's also ingesting input media (converting >> frames to EXR) not sure if that's mandatory though from my testing. >> That'll possibly allow for very responsive scrubbing. Also the rendering >> pipeline can use reduced resolution to speed up
Re: 8K Support?
śr., 29 lip 2020 o 13:39 farid abdelnour napisał(a): > > > Em qua., 29 de jul. de 2020 às 07:53, Tobiasz Karoń > escreveu: > >> I simply exported my pre-composited footage from Olive and the first 3/4 >> of the video I've managed to edit and completed the project in Kdenlive. >> I had some bad audio glitches from Kdenlive though, so I wasn't happy :( >> > > The audio artifacts that have haunted us for so many years have finally > been fixed and will be in the next release of MLT (6.22). Btw, do use the > Kdenlive AppImage since it uses MLT from master and fixes this... > Ah, thanks - that's good to know. I was in a hurry and didn't have time to find a different build to render my project at the time. But I'm glad it's fixed now! > > >> I think Olive is going to implement Open Timeline IO too, but I don't >> know what the status of that is. >> >> On Tue, Jul 28, 2020, 15:44 wrote: >> >>> Thanks, there's a lot of good info here! You mention switching from >>> Olive to Kdenlive to finish an edit. Does Olive have a standardized file >>> format? Was the switching process painful? >>> >>> Also, does Olive have a CLI? >>> >>> Tom >>> >>> El 27 jul 2020, a las 21:19, Tobiasz Karoń escribió: >>> >>> I would personally not bet on MLT improving here. It's a very old >>> framework with a legacy that's holding it back, and it doesn't seem to get >>> much development done. I think it'd be best if video editors simply stopped >>> considering it a good option. We have way too many "front-ends" to MLT all >>> being held back by it's limited design. >>> >>> OpenShot tried to go beyond MLT, but... that apparently didn't go too >>> well. >>> >>> I'm glad Kdenlive has started work to make it possible to implement a >>> different back-end (maybe some cooperation with the Olive team could >>> occur?) - and also implementing Open Timeline IO. I hope we can create some >>> synergy between software using such open data exchange standards. >>> Especially since they are used in the industry - which could help "serious" >>> people consider using libre software. >>> >>> There's a long way to go before that's gonna be possible, but I think >>> we're on a good track. >>> >>> I've been using Olive Video Editor for the past year or so (also limited >>> to 8-bit color, at least for output - the processing is done 100% using >>> GLSL so it's in a good position to develop further from that though - I >>> even made my own effects for it). There's a rewrite going on that >>> incorporated Open Color IO for flexible color management, also a node >>> editor for fine grained control of all the processing being done (in the >>> future this should allow for insanely powerful compositing but also reusing >>> and sharing your own effects etc.), There's also a timeline proxy being >>> implemented that stores frames in EXR files (an SSD for a scratch drive >>> would be very recommended - I should test that more myself). I believe it's >>> also ingesting input media (converting frames to EXR) not sure if that's >>> mandatory though from my testing. >>> That'll possibly allow for very responsive scrubbing. Also the rendering >>> pipeline can use reduced resolution to speed up the compositing - I'm happy >>> Kdenlive implemented that recently (in Kdenlive it's possibly more useful >>> right now). >>> >>> So far the new Olive version is very unstable and can't be used to do >>> any work really, but they're doing great progress with it and release >>> updated builds very often (evey week or more frequently - so called >>> Continuous Build). >>> >>> It's taking a lot of time, but it seems they can do without duct tape >>> and build an open-source NLE that'll finally have a chance to not only have >>> a nice UI and workflow, but also have all the basic and advanced features >>> you'd want and let you use good cameras or deep-color CGI renders, composit >>> and process that and get top-quality results with them. While also >>> utilizing modern computer hardware in 100%. >>> >>> Now - Olive is not perfect and I had some serious issues with it, where >>> I had to fallback to Kdenlive to finish editing a video as it's would crash >>> every few seconds in projects longer than 20 minutes. I've finally found a >>> build that doesn't have this bug and can work on it, but that was bad. The >>> main developer seems to have an idea what the issue is though, I've worked >>> with him to solve this. >>> >>> Olive's 0.1 version is the current "stable alpha" that I use - it's very >>> limited in effects compared to Kdenlive (they are more reliable and not >>> redundant though), but it's responsive and I like the editing tools a lot. >>> When I edit my videos I always need at least 2 audio tracks in sync, and >>> min. 2 composited images with chroma keying. >>> >>> In Blender VSE I had to train myself to cut in a very specific way to >>> keep everything in sync (manually making sure I keep the sync between >>> strips) because it had no way to link strips together, only
Re: 8K Support?
Em qua., 29 de jul. de 2020 às 07:53, Tobiasz Karoń escreveu: > I simply exported my pre-composited footage from Olive and the first 3/4 > of the video I've managed to edit and completed the project in Kdenlive. > I had some bad audio glitches from Kdenlive though, so I wasn't happy :( > The audio artifacts that have haunted us for so many years have finally been fixed and will be in the next release of MLT (6.22). Btw, do use the Kdenlive AppImage since it uses MLT from master and fixes this... > I think Olive is going to implement Open Timeline IO too, but I don't know > what the status of that is. > > On Tue, Jul 28, 2020, 15:44 wrote: > >> Thanks, there's a lot of good info here! You mention switching from Olive >> to Kdenlive to finish an edit. Does Olive have a standardized file format? >> Was the switching process painful? >> >> Also, does Olive have a CLI? >> >> Tom >> >> El 27 jul 2020, a las 21:19, Tobiasz Karoń escribió: >> >> I would personally not bet on MLT improving here. It's a very old >> framework with a legacy that's holding it back, and it doesn't seem to get >> much development done. I think it'd be best if video editors simply stopped >> considering it a good option. We have way too many "front-ends" to MLT all >> being held back by it's limited design. >> >> OpenShot tried to go beyond MLT, but... that apparently didn't go too >> well. >> >> I'm glad Kdenlive has started work to make it possible to implement a >> different back-end (maybe some cooperation with the Olive team could >> occur?) - and also implementing Open Timeline IO. I hope we can create some >> synergy between software using such open data exchange standards. >> Especially since they are used in the industry - which could help "serious" >> people consider using libre software. >> >> There's a long way to go before that's gonna be possible, but I think >> we're on a good track. >> >> I've been using Olive Video Editor for the past year or so (also limited >> to 8-bit color, at least for output - the processing is done 100% using >> GLSL so it's in a good position to develop further from that though - I >> even made my own effects for it). There's a rewrite going on that >> incorporated Open Color IO for flexible color management, also a node >> editor for fine grained control of all the processing being done (in the >> future this should allow for insanely powerful compositing but also reusing >> and sharing your own effects etc.), There's also a timeline proxy being >> implemented that stores frames in EXR files (an SSD for a scratch drive >> would be very recommended - I should test that more myself). I believe it's >> also ingesting input media (converting frames to EXR) not sure if that's >> mandatory though from my testing. >> That'll possibly allow for very responsive scrubbing. Also the rendering >> pipeline can use reduced resolution to speed up the compositing - I'm happy >> Kdenlive implemented that recently (in Kdenlive it's possibly more useful >> right now). >> >> So far the new Olive version is very unstable and can't be used to do any >> work really, but they're doing great progress with it and release updated >> builds very often (evey week or more frequently - so called Continuous >> Build). >> >> It's taking a lot of time, but it seems they can do without duct tape and >> build an open-source NLE that'll finally have a chance to not only have a >> nice UI and workflow, but also have all the basic and advanced features >> you'd want and let you use good cameras or deep-color CGI renders, composit >> and process that and get top-quality results with them. While also >> utilizing modern computer hardware in 100%. >> >> Now - Olive is not perfect and I had some serious issues with it, where I >> had to fallback to Kdenlive to finish editing a video as it's would crash >> every few seconds in projects longer than 20 minutes. I've finally found a >> build that doesn't have this bug and can work on it, but that was bad. The >> main developer seems to have an idea what the issue is though, I've worked >> with him to solve this. >> >> Olive's 0.1 version is the current "stable alpha" that I use - it's very >> limited in effects compared to Kdenlive (they are more reliable and not >> redundant though), but it's responsive and I like the editing tools a lot. >> When I edit my videos I always need at least 2 audio tracks in sync, and >> min. 2 composited images with chroma keying. >> >> In Blender VSE I had to train myself to cut in a very specific way to >> keep everything in sync (manually making sure I keep the sync between >> strips) because it had no way to link strips together, only group them into >> meta-strips (Olive has that option too - Nesting). >> >> In Kdenlive I always had issues importing my multiple audio tracks and >> even though linking works, the editing tools never worked for me as well as >> they do in Olive. >> >> Also - in any libre NLE I tried (all were heavily CPU-bound and >>
Re: 8K Support?
I simply exported my pre-composited footage from Olive and the first 3/4 of the video I've managed to edit and completed the project in Kdenlive. I had some bad audio glitches from Kdenlive though, so I wasn't happy :( I think Olive is going to implement Open Timeline IO too, but I don't know what the status of that is. On Tue, Jul 28, 2020, 15:44 wrote: > Thanks, there's a lot of good info here! You mention switching from Olive > to Kdenlive to finish an edit. Does Olive have a standardized file format? > Was the switching process painful? > > Also, does Olive have a CLI? > > Tom > > El 27 jul 2020, a las 21:19, Tobiasz Karoń escribió: > > I would personally not bet on MLT improving here. It's a very old > framework with a legacy that's holding it back, and it doesn't seem to get > much development done. I think it'd be best if video editors simply stopped > considering it a good option. We have way too many "front-ends" to MLT all > being held back by it's limited design. > > OpenShot tried to go beyond MLT, but... that apparently didn't go too well. > > I'm glad Kdenlive has started work to make it possible to implement a > different back-end (maybe some cooperation with the Olive team could > occur?) - and also implementing Open Timeline IO. I hope we can create some > synergy between software using such open data exchange standards. > Especially since they are used in the industry - which could help "serious" > people consider using libre software. > > There's a long way to go before that's gonna be possible, but I think > we're on a good track. > > I've been using Olive Video Editor for the past year or so (also limited > to 8-bit color, at least for output - the processing is done 100% using > GLSL so it's in a good position to develop further from that though - I > even made my own effects for it). There's a rewrite going on that > incorporated Open Color IO for flexible color management, also a node > editor for fine grained control of all the processing being done (in the > future this should allow for insanely powerful compositing but also reusing > and sharing your own effects etc.), There's also a timeline proxy being > implemented that stores frames in EXR files (an SSD for a scratch drive > would be very recommended - I should test that more myself). I believe it's > also ingesting input media (converting frames to EXR) not sure if that's > mandatory though from my testing. > That'll possibly allow for very responsive scrubbing. Also the rendering > pipeline can use reduced resolution to speed up the compositing - I'm happy > Kdenlive implemented that recently (in Kdenlive it's possibly more useful > right now). > > So far the new Olive version is very unstable and can't be used to do any > work really, but they're doing great progress with it and release updated > builds very often (evey week or more frequently - so called Continuous > Build). > > It's taking a lot of time, but it seems they can do without duct tape and > build an open-source NLE that'll finally have a chance to not only have a > nice UI and workflow, but also have all the basic and advanced features > you'd want and let you use good cameras or deep-color CGI renders, composit > and process that and get top-quality results with them. While also > utilizing modern computer hardware in 100%. > > Now - Olive is not perfect and I had some serious issues with it, where I > had to fallback to Kdenlive to finish editing a video as it's would crash > every few seconds in projects longer than 20 minutes. I've finally found a > build that doesn't have this bug and can work on it, but that was bad. The > main developer seems to have an idea what the issue is though, I've worked > with him to solve this. > > Olive's 0.1 version is the current "stable alpha" that I use - it's very > limited in effects compared to Kdenlive (they are more reliable and not > redundant though), but it's responsive and I like the editing tools a lot. > When I edit my videos I always need at least 2 audio tracks in sync, and > min. 2 composited images with chroma keying. > > In Blender VSE I had to train myself to cut in a very specific way to keep > everything in sync (manually making sure I keep the sync between strips) > because it had no way to link strips together, only group them into > meta-strips (Olive has that option too - Nesting). > > In Kdenlive I always had issues importing my multiple audio tracks and > even though linking works, the editing tools never worked for me as well as > they do in Olive. > > Also - in any libre NLE I tried (all were heavily CPU-bound and > single-threaded) compositing 2 or more 1080p layers dropped preview > framerate to 15-20 FPS, and if you add a blur effect - it goes below 10. > Olive can do this in realtime thanks to OpenGL if the files are not too > high quality (I've recently started encoding H.264 proxy files) - seems > that decoding 15Mbps H.264 is a bottleneck in Olive, and it's default > Protest proxy
