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Posts Tagged ‘Gstreamer’

Updates on WebM Support – All Aboard!

June 2, 2010 Leave a comment

As could probably be predicted, there’s been a lot more press around WebM over the last ten days or so. A few articles are worth noting.

CNET posted a reasonably ordinary piece regarding the quality of WebM, when compared against H.264. However, there were two interesting links in this piece. 
The first pointed to a WebM project page where the indepth encoding parameters for WebM content are outlined. If you’re planning to create WebM files, reading this page is essential. 
The second link, to the quAVlive website provides some various examples of H.264 (using x264) encoding compared against WebM. I can’t really see a lot of visual difference in the “Sunflower” example. However, it is easily clear to my eyes, without even enlarging the screenshots, that in “Park Joy” and “Riverbed” H.264 is certainly superior. I would like to have seen more information regarding the time taken to transcode these examples, with each codec, and the resulting file sizes. Picture quality isn’t always everything, transcode time and storage requirements should also be taken into consideration.
Everyone’s jumping on the WebM bandwagon with software and hardware support. Gstreamer claims full plugin support, which means in turn there is Moovida support and the Transmaggedon transcoder can also output VP8 codec files, although not in the Matroska/WebM container yet. Not to be outdone, Flumotion, will also stream live VP8/WebM content. The Miro Video Converter will also output valid VP8/WebM files, claiming to be the first to do so. The list could go on, but the easiest thing is to probably just keep tabs on the WebM project page listing all the supported devices and software tools, both commercial and open source.
Also worth a shout is the fact that both Mozilla and Opera are pushing for VP8/WebM to be specifically included in the HTML5 specification. Previously, major browser makers couldn’t agree on one specific video file format – Mozilla and Opera backing Ogg Theora and Apple sticking with H.264. I can’t see that particular situation changing now. 

PiTiVi 0.13.3 Released

September 16, 2009 Leave a comment

The PiTiVi team have recently announced the release of version 0.13.3 of the popular open source source non-linear video editing tool. PiTiVi is built with Python on top of the GStreamer framework.

This latest version features the following updates:
  • Fix Rendering Failures
  • UI beautifications
  • Switch to themeable ruler
  • Speed optimisations
  • Show the project name in the window title
For more information regarding this release, including dependencies, contributors and a long list of bugs fixed, checkout the release notes page.
Version 0.13.3 of PiTiVi can be downloaded here.

New Version of PiTiVi – 0.11.2

October 30, 2008 Leave a comment

The news is a couple of weeks old now, but I thought PiTiVi was dead and wasn’t bothered visiting their website for updates anymore. The link to their Forum still goes to a default Apache page.

Anyway, GStreamer and Python based video editor, PiTiVi, released version 0.11.2 on October 15th, after almost a year of project silence. It’s good to know progress is still being made.
The 0.11.2 release is not yet meant to be production ready, but does include a number of updates and bug fixes. Full details as always on the Release Notes page.
There also seems to be a reasonable amount of activity on the PiTiVi Wiki and mailing list. Not only that, various blog posts on the Gstreamer Planet feed indicate that Collabora Multimedia have hired a part-time programmer to work specifically in PiTiVi, and are looking for another head as well. The target is a April 2009 for a “usable release”.

Videos from linux.conf.au 2008

February 5, 2008 1 comment

The organisers of linux.conf.au have done a fantastic job in making all presentations and tutorials available to watch online – in Ogg Theora format naturally. If you were disappointed to miss out on linux.conf.au, this is the next best thing to being there.

For readers of Stream #0 the following items from the main conference may be of most interest:

Wednesday

Thursday

Friday

For a full list of videos from the main conference presentations, go to the main presentation page on the linux.conf.au site and the find the presentation you’re most insterested in.

In parallel to the main linux.conf.au, there was also a Multimedia Mini-conf and the good news is, videos are available online for these presentations too!

  • Foundations of Open Media Software workshop summary [OGG]
    [SPX]
  • Dirac Video Compression System [OGG]
    [SPX]
  • FOSS Codecs for Online Video: Usability, Uptake and Development [OGG]
    [SPX]
  • Lightning Talks [OGG]
    [SPX]
  • Survivor Melanesia – Ethnomusicologist vs Annodex [OGG]
    [SPX]
  • Adventures in Consumer Electronics with GStreamer [OGG]
    [SPX]
  • Ingex – tapeless television production using Linux. [OGG]
    [SPX]

A full listing from all Mini-confs is also available.

There goes the rest of your day!

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