On Tue, Dec 11, 2012 at 1:07 PM, Marco Fleckinger <marco.fleckin...@wikipedia.at> wrote: > Hello, > > On 11/12/12 19:05, Dan Dennedy wrote: >> On Tue, Dec 11, 2012 at 2:26 AM, Marco Fleckinger >> <marco.fleckin...@wikipedia.at> wrote: >>> Is it possible to export a melt command line from a kdenlive >>> project, so I could render the project also on another machine >>> without needing to install a graphical user interface? >> >> You can save a render script, but that uses kdenlive_render, which >> is little more than a wrapper around melt for some special things >> like making dual pass appear as one job. You do not really need it. > > AFAIK not. > >> Basically, you can just render the kdenlive project file directly >> with melt. > > Just had a look at such a file and found out that it's indeed looking like > > http://www.mltframework.org/bin/view/MLT/MltXml > > So <kdenlivedoc /> will be ignored by MLT? As there are just some very
yes > small thumbnails and other small files in the thumbs directory the > project-file is referring to, I assume that those are just for the work > with kdenlive? > >> The kdenlive render script will show you the melt avformat parameters >> for the encoding after kdenlive has done some variable substitutions >> based on project and render dialog settings. > > Ah, you mean the output-profile I would use with melt's consumer? Here I > have a problem on Debian Wheezy: The profile "OGG/Theora" doesn't work. > I have to replace several parameters. So instead of > > "Theora/Originalversion": acodec=libvorbis aq=3 vcodec=libtheora vq=8 > vb=1024k r=25 aspect=%dar pass=%passes > > I needed to use > > -acodec vorbis -aq 3 -vcodec libtheora -strict experimental -sameq -vb > 1024k -r 25 %1.ogv ok, just edit as-needed. The melt syntax for setting properties is name=value instead of "-name value". > when I worked with ffmpeg/avconv. Even compiling ffmpeg from the sources > didn't work. I didn't know what aspect=%dar means, therefore I didn't > use it at all in my tests. The %dar is an example of the Kdenlive variable substitution I mentioned. > But actually it is not possible to change this profile permanent at all. You can create a custom render profile based on an existing one. > At least I could find out how to do so yet. I'm really new to > video-processing but am locking from a IT-view on this. This helps a lot. > > It'd also be really great to help webm and vp8 to get more popular, but > I couldn't find a default profile for it. Melt has a preset system too, but also you do not need to be limited to presets. "melt -query presets" shows you all presets. "melt -query preset=consumer/avformat/webm" shows the details of a preset. Use a preset like this: melt ... -consumer avformat:output.file properties=webm Here, melt knows that you are trying to use a preset with a consumer named avformat and can formulate the preset path to save you from some typing. >> Thus, you can prototype it in kdenlive, make a render script, and >> then copy the parts of the render script for your own custom >> melt-only script. >> > That was actually the idea: Prototyping in kdenlive using small > resolution video files. The final resolution will be rendered on a > server or workstation somewhere in a data-center with better internet > connection. So many people can work with the same files distributed. > >> Please be aware that not everything works in a typical headless >> configuration. Things like kdenlivetitle and SVG loading require the >> QtGui module that does not work without an X11 session, but you can >> use the xvfb virtual X11 server! >> > Hm, actually it should run on a server machine, maybe I could arrange > that somehow. Otherwise I need to generate the videofiles containing the > results of this routines by using other ways. > >>> WikiTV-Team >> >> intriguing project name >> > Yes, since the preparations for the 10th anniversary of Wikipedia on > January, 15th 2011 there is also a WikiTV project forming. It should be > a sister project to Wikipedia as e.g. Wikibooks, Wiktionary, etc. We > also cooperate with a guy from the ORF (Austria's national broadcaster). http://www.dorftv.at/ uses MLT, but I do not know how it is related to ORF. > As we want to support Free Knowledge, we also think that recording Open > Source talks are relevant for us, as well as some Wikimedia Events. At http://nextdayvideo.com/ covers conferences such as PyCon and also uses MLT. > the moment we only operate in the German-spoken area, but would also be > glad if this was more international. > > Less than 6 persons we're looking for people who'd like to join us. > So if anybody is interested into this project, we would welcome you to > join us! I am quite busy as the lead MLT developer, but I can offer you some MLT-related support as-needed because I think WikiTV is a good concept. > There is also a strong reference to Linux and FOSS. The two main people > visiting different events operating for WikiTV are Linux-Users including > me :) > > Marco ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Kdenlive-devel mailing list Kdenlive-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kdenlive-devel
