On Fri, 2011-06-10 at 18:57 +0200, Renato wrote: > On Fri, 10 Jun 2011 17:58:46 +0200 > Philipp <hollunder(a)lavabit.com> wrote: > > > Hi, > > sorry for abusing this list for a mostly video editing question, but I > > didn't find a proper list and knew that we have some video people on > > this list. > > > > I'd like to fix some videos that have partially out of sync video and > > audio, meaning that beginning at a certain point in the video the > > audio is suddenly out of sync by a couple of seconds. There's no > > constant change, the delay seems fixed once it's there. > > > > I wonder how to fix such a thing. The files are xvid encoded videos > > and vbr mp3 audio inside avi containers. I thought it should be > > reasonably easy to cut and move the audio (re-encode if unavoidable, > > but I know it's in principle possible without) and put it back in a > > container, but I didn't manage. > > > > Can someone recommend a program/workflow that would allow this? > > > > I tried: > > - Avidemux: seems like actual editing is not what this program was > > written for, couldn't figure it out, but it seems close > > > > - openshot: couldn't figure out how to separate video/audio > > > > - kino: seems to only work with DV-files, apparently takes ages to > > decode the file, doesn't seem to be what I need > > > > - openmovieeditor: I figured it might work by dragging the file to > > both a video and an audio track, but I got extremely garbled audio > > output, no idea what's wrong > > > > - cinelerra-cv: Doesn't start. No error message, it simply shows no > > window, nothing. Well, it does something with the screen, but it > > shows nothing. > > > > - pitivi: Doesn't seem like it can play back the video. I can drag the > > video to the tracks and it starts to draw a waveform, I guess no > > video thumbnails because of: gst.ElementNotFoundError: pngenc > > Doesn't seem to be able to play the video. > > > > - kdenlive: would require me to install 30 additional packages, total > > about 200MB, no thanks. > > > > I thought it would be a simple task, really nothing fancy. Seems like > > I was wrong. > > > > Regards, > > Philipp > > > > Hi, unfortunately can't give you a full solution, but only a hint: in > mplayer with "-" and "+" you can adjust audio/video syncronization by > multiples of 100ms (maybe you cand do finer, but I'm not sure). > > maybe you could then somehow record the output to a new file?

I don't think so, assumed you can display the video without side effects in a way, that you could 'record your desktop', than you only would be able to record video, but AFAIK not audio. An app like Cinelerra can separate the container's audio and video, but using video apps on Linux can become a PITA ... 21.9 Improving performance For the moment GNU/Linux is not an excellent desktop. It is more of a server. Most of what you will find on modern GNU/Linux distributions are faceless, network-only programs strategically designed to counteract one Microsoft server feature or another and not to perform very well at user interaction. There are a number of parameters on GNU/Linux, which ordinary people can adjust to make it behave more like a thoroughbred in desktop usage. 21.9.1 Disabling swap space 21.9.2 Enlarging sound buffers 21.9.3 Freeing more shared memory 21.9.4 Speeding up the hard drive 21.9.5 Disabling cron 21.9.6 Reducing USB mouse sensitivity 21.9.7 Assorted X tweeks 21.9.8 Speeding up the file system http://cinelerra.org/docs/cinelerra_cv_manual_en.html ... if the app after editing should make a container again, it can happen that the old man became a voice like Mickey Mouse or the beautiful woman is transformed to a Conehead. After 12 hours using all resources of your computer you will know if the video is ok or not. I nearly have forgotten to mention, that it also can happen that audio and video get out of sync during this process ;). YMMV. On my machine Cinelerra always 'worked' OOTB! On Philipp's it doesn't run. Regards, Ralf

Thanks Ralf, I had looked at the typical problems but they all mention error messages while I get none: ----- $ cinelerra Cinelerra 2.1.5CV GIT::01dc4375a0fb65d10dd95151473d0e195239175f (C) 2010 Heroine Virtual Ltd. External ffmpeg Compiled on Mon Mar 28 20:17:50 UTC 2011 Cinelerra is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. There is absolutely no warranty for Cinelerra. ----- That's it, nothing else happens in the console and no visible window appears, though an invisible does appear (I can tell from the reaction of my window manager, it tiles the invisible window but nothing is painted there). I thought cutting and aligning audio/video on a timeline would be a basic operation and possible in every NLVE...

On Fri, 2011-06-10 at 21:44 +0200, Robin Gareus wrote: Wow, Ardour with MIDI sequencer and for video sync. I can't believe that this is real. Am I awake?

Any chance that it will work with 4 GB RAM (who cares for RAM, it's cheap, but I can't buy a new mobo and CPU etc.), AMD 2.1 GHz dual-core, HDSPe AIO or does this need some kind of super computer to do an extensive production?

I would like to remove the OT for the subject, because this isn't OT. I never have given up to get rid off MIDI jitter and I get rid of it, but I have given up to get a workstation that would enable all I would like to have. On what hardware was it successfully used? What distro?

On 06/10/2011 10:36 PM, Ralf Mardorf wrote: it's real. still somewhat alpha but it's been usable and was announced ~1 year ago on ardour-dev. Paul said he'll look into merging this endeavour around ardour-3.1 but there's no promise to that. I've demoed it at the LAC2011 and Dave has written about it: http://www.linuxjournal.com/content/ecology-ardour previously. sure. it's not too heavy on RAM, 128MB should do; but the more the better (video frame-cache). and you should have a >1.6GHz dual-core CPU for decoding PAL-DVDs in real-time. It's also possible to run 'icsd' (the video-decoding server) distributed on a cluster. amd64/x86-64 (GNU/Linux & OSX 10.6), i386 (Linux/win32) and PPC (OSX 10.5). I develop and use it in on Debian. Patrick Shirkey has tested it IIRC on Fedora/CCRMA, Dave Phillips' test system looks like Ubuntu; and Pau Arumi has reported some bugs and success as well on Fedora. 'icsd' is pretty much disto and OS agnostic. However, Ardour3 only runs on GNU/Linux and requires a few tewaks for OSX. ciao, robin

2: The people who are being paid are purposefully screwing things up. 3: The people who are being paid are incompetent and should be fired.

That is reasonable for an alpha version but when there is no ongoing support for the stable versions of the most useful tools and making sure there is a decent collection of unstable tools to work with in the major distros that suggests a more sinister angle. There is absolutely no good reason for the major distros to be so slack in this regard. They are literally making us all look bad. It's been this way for years and by now they should have realised that being successful at desktop Linux means supporting multimedia production tools. Apple realised this long ago with Garage band, iphoto, imovie, etc... I wouldn't be at all surprised if Microsoft and Avid were paying people to sabotage the major distros.

They surely see Linux multimedia production tools as a significant threat by now. The last thing they want is for the tools to be widely installed and utilised ootb. At the moment there are only hardened Linux users pushing development. With more unified distribution from the major distros that will significantly increase the user base and the potential for funding of major development efforts to close the remaining gaps. Avid and Microsoft are well aware of this current situation and are no doubt doing their best to keep the status quo. In other words they are poisoning the well. If it's not that then the only option left is incompetence on the part of the major distro's and the people they pay or choose not to pay to look after this stuff. But as it really doesn't take much effort on the part of Avid and Microsoft to get to those people and they can print cash to facilitate their agenda I have given up on the idea that the current situation is due to incompetence.

It goes deeper too. There is serious problem with backwards compatibility across the board. Try getting any of the recent updates to your favorite tools to compile in an older (>3 years) version of Debian/Ubuntu/Redhat. They should just work but there are so many dependency issues that most people will just give up. Having to constantly upgrade to the latest version of x distro just so we can use a new version of an app is a big hassle for most users. It's a complete no go for any uninitiated n00b. I don't think it is his fault but the people he hires. Unfortunately his core team seems to be infiltrated for some years now. Just look what they did to Pulse Audio integration for a good impression of how bad it has been. Things have changed significantly since they cleaned hose on the people responsible for that fiasco. It is the same at Redhat too with this stupid policy of not including any potentially proprietary codecs and software enabled to use them and providing absolutely no official support/documentation for the rpmfusion repos. Now that Nokia has been absorbed by the MS borg we can write off any further support from them. Just look at what happened to QT/KDE since MS took over Nokia. Suddenly there are a whole bunch of dependencies that break existing installations if you want to upgrade. We can pretty much forget about Suse as they sold out to Novell/MS several years ago...

Hack on JahShaka?

I can't see any other reasons for the major distros not to have a fully working and well integrated multimedia productions suite by now. After all the tools are being used in one way or another by all the major motion

On Sat, Jun 11, 2011 at 8:49 AM, pshirkey wrote: Really? Yes, some of the largest studios such as Disney and Universal actually use Linux (Red Hat) for animation, texturing and VFX. But they don't use any of NLE for Linux. Yes, it's called "not being good enough".

Yes, that why they use harrison consoles to mix the scores. Oh wait, these run on linux

What was your point regarding quality again?

Philipp Überbacher wrote: Sebkha-Chott seem to do all right with what's available : http://www.youtube.com/watch?v=vTF1k93BaOk&feature=feedlik

(According to LAU member Aurelien that video was produced with Kdenlive). I guess it all depends on what you want to achieve. Best, dp _______________________________________________ Linux-audio-user mailing list Linux-audio-user(a)lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-user

Excerpts from Dave Phillips's message of 2011-06-11 13:50:09 +0200: I've seen the video and like it (and the music). I also read kdenlive rather often recently. I'm under the impression that a lot of recent development is focused on it, at least the MLT people seem to focus on this particular GUI. But I really dislike DEs and find it a pity when very useful software gets integrated into a DE for little tangible benefit. I should really take the time sometime and see what benefits desktop integration brings and compare the work involved between a DE integrated and a version that uses just a toolkit (KDE vs. Qt for example). My guess at this time is that KDE integration offers a little bit of convenience and consistency for KDE users, nothing more.