10 Jul 2017, 5:12pm
linux:

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  • Rendering problem with Kdenlive

    I really enjoy using the Kden­live video edi­tor. I think it’s a sim­ple, straight for­ward, and yet pow­er­ful tool.

    But just dur­ing the last few days, I had trou­bles for the first time and could not find a solu­tion. When ren­der­ing my project, it kept fail­ing with max_analyze_duration 5000000 reached at 5000000. I searched online, the error might be related to the size of the audio (>1h) Still, the project ren­dered at first, but after the final cut — with lots and lots of cuts — I started get­ting this error, thus, out of a sud­den, I was not able to get my final video file out any­more. Was I threat­ened to hav­ing to do the entire work again or what??

    Finally, today I found a solu­tion! Bet­ter, a workaround.

    I split up the file by adding guides — in my case three, but the num­ber might depend on the project size — and then used the ren­der fea­ture “Guide zone” (at the bot­tom of the ren­der dia­log). So, I ren­dered three parts and used melt to put them together like this:

    melt input*.mp4 -consumer avformat:result.mp4 acodec=aac ab=160k vcodec=libx264 vb=3000k
    

    I’m using x.264 and AAC here — but you can also drop all those para­me­ters and let melt fig­ure every­thing out — it’s pretty capa­ble, give it a try.

    melt input*.mp4 -consumer avformat:result.mp4
    

    If you have ffmpeg on your sys­tem, you can merge the files using the copy mode, so no qual­ity gets lost — see details here. But even when using melt and thus re-encoding the video, you will not notice that it has been ren­dered in three parts and “melted” later. So I’m happy! Still a bit sur­pris­ing that I could not find a solu­tion online. So hey, hope this approach works for you too! :)

    14 Feb 2011, 9:26pm
    linux:

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  • Logitech Communicator STX Webcam vs. Ubuntu (64bit) & Skype 2.1

    There are many tuto­ri­als out there solv­ing the prob­lem by mak­ing Skype use Video for Linux ver­sion 1 dri­vers instead of ver­sion 2, as that par­tic­u­lar web­cam does not seem to get along with the newer ver­sion. It boils down to the fol­low­ing lines:

    Cre­ate a file in /usr/local/bin/skype and insert

    #!/bin/bash
    LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so /usr/bin/skype

    Finally, make it exe­cutable by sudo chmod a+x /usr/local/bin/skype
    Use this file to start Skype from now on. Done.

    But not for me. Skype refused to eat it: ERROR: ld.so: object '/usr/lib/libv4l/v4l1compat.so' from LD_PRELOAD cannot be preloaded: ignored.
    Until I finally found this one here.

    Just to cut a long story short, here is why: all the other solu­tions work for 32bit Linux only — but hey, I do not have any of my old laptop’s poten­tial to be wasted — I am run­ning 64bit Ubuntu (tested with ver­sion 9.10 and 10.10 64bit). And with a minor tweak, the fix will work for you, too. :)

    Install the video4linux libraries:

     sudo apt-get install lib32v4l-0

    And change /usr/local/bin/skype to

    LD_PRELOAD=/usr/lib32/libv4l/v4l1compat.so /usr/bin/skype

    Its just about the “32” — and one good exam­ple more of why you should put mean­ing­ful error mes­sages in what­ever software!

    Thanks Eoin Mur­phy.

    24 Jan 2006, 8:54pm
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  • Dream Worlds — Traumwelten

    dream worlds screenshot - awakedream worlds screenshot - dreaming

    This movie was a big chal­lenge for me, because although I was the worst drawer in the whole group for sure, I got the chance to do the draw­ings for the movie. Some sleep­less nights with a pen­cil, quite some sheets of paper and some pots of fruit tea — but finally, this small movie became some­thing beau­ti­ful and unique and I ended up quite happy and proud :) . The video part and the col­oration of the drawn part was done by collegues.

    » see the movie & more details »

    10 Dec 2004, 11:14pm
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  • Ikarus

    Ikarus movie cover.

    My first movie! A stop-motion movie about a bird. It is hor­ri­bly much work — approx­i­mately one hour to do one sec­ond of film, but it would always do it again! :)

    But see your­self below!

    » more details & high qual­ity video download »