NLE Video Editors
Linux Video Editor (LVE) developer Gerhard Monzel says, “The intended purpose was cutting MPEGs and to encode to (S)VCDs.” Monzel works at SAP as systems administrator in St. Ingbert, Germany. The LVE documentation is all in German. “LVE is based on some freeware libraries: libmpeg3 to seek and decode MPEG and libsdl as base of my GUI”, says Monzel. “The rest is self-made.” He says many MPEG formats are supported (MPEG-1 and MPEG-2) including VOB and IFO, but not DVB. His GUI design was influenced by Pinnacle Studio MP10.
LVE is cuts-only—no effects and no titles. Note that whether the source material is PAL or NTSC, the output is always PAL. NTSC sources must be processed with sox to correct the framerate changing the audio pitch. LVE has no install procedure. The tarball must be extracted in the root directory:
cd / tar xvfz /install/public/nle/lve/ lve_bin-31-10-01.tar.gz ls /usr/local/lve/bin bbainfo bbinfo bbvinfo ffmpeg_lve gensmart lmp mplex toolame bbdmux bbmplex encode genmpg gensvcd lve qdir chmod 666 /usr/local/lve/lib/SystemFont.bmp ./lve
MainActor is the only closed-source application we looked at. We installed it from RPM using Alien, following much the same procedure as with Broadcast 2000.
MainActor can title (2-D and 3-D text) and edit movies. It offers video transitions and audio effects. The evaluation version writes “MainActor” on your video until you purchase a registered copy. MainActor includes the following programs: maseq (NLE), mave (animation converter), macap (V4L MJPEG capture) and lmatool (console video file converter). The documentation is in /usr/share/doc/Packages/MainActor.
Trinity editor and maintainer Chris Hardy says it has rudimentary MPEG and audio support. Trinity can understand sequences of image frame files, too. “The source code hasn't been touched in two years”, says Hardy. “I haven't heard from the developer in a while and the project has been in limbo.” The GUI is one thing Hardy likes about Trinity.
There were several minor compilation errors that we fixed while building Trinity 0.5 and one serious one. We sent the corrections to Hardy. Because of a conflict with a commercial product, Trinity must be renamed, and Hardy would like a developer interested in working on an NLE to join the project so it can go forward.
Computers present a great advantage in editing movies because they can easily edit out of sequence or remove or add a scene—that's why it's called nonlinear editing. Nonlinear editors are used to edit video sequences to create television shows and motion pictures.
In examining Broadcast 2000, Crow, Kino, LVE, MainActor and Trinity, we've looked at some of the video tools available in Linux, but hardly all of them. FFmpeg, GAnSO, Gnonlin, Jahshaka, Linux Video Studio, matterial, mpgtx, mpegcut and SAMPEG-2 present more choices.
Two commercial (expensive) tools that we will be evaluating in the future are Nothing Real Shake and Silicon Grail RAYZ. These are used to add special effects to many Hollywood motion pictures. There is just one major open-source tool that is used in major motion pictures and that is Film GIMP, used in Harry Potter, Cats & Dogs, Lord of the Rings and more. We'll take a look at Film GIMP next time.
Practical Task Scheduling Deployment
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
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|SUSE LLC's SUSE Manager||Jul 21, 2016|
|My +1 Sword of Productivity||Jul 20, 2016|
|Non-Linux FOSS: Caffeine!||Jul 19, 2016|
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- The Firebird Project's Firebird Relational Database
- Stunnel Security for Oracle
- My +1 Sword of Productivity
- Non-Linux FOSS: Caffeine!
- Managing Linux Using Puppet
- SUSE LLC's SUSE Manager
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- Doing for User Space What We Did for Kernel Space
- Google's SwiftShader Released
- SuperTuxKart 0.9.2 Released
With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide