Re: [Release] Gnonlin v0.2.0

[Edward Hervey <bilboed gmail com>]

Hi,

On Apr 12, 2005 1:05 PM, Xavier Bestel <xavier bestel free fr> wrote:
> Le mardi 12 avril 2005 à 12:17 +0200, Edward Hervey a écrit :
> > The GStreamer and Gnonlin team are happy to announce the initial
> > public release of the Gnonlin non-linear editing library.
> 
> How functional is it ? Is it able to do simple cuts to black, sound
> mixing or even crossfades or fade-to-black ?

  Gnonlin is aimed at "easing" non-linear editing. It does not handle
effects and sources by itself, just like GStreamer core is
media-agnostic and concentrates on efficient multimedia
graph-handling.
  Simple cuts work. If you want it to cut to black, set a default
black video source (using the videotestsrc element) and
gnl_composition_set_default_source().
  To do video fade-in, for exemple, you have to add a black source
(using the videotestsrc element) which overlaps through time with a
higher priority than you video source, and then add a videomixer
element with a smaller priority (hence more important) during the
desired fade time.

  To sum up what works well with gnonlin:
  * element positioning through time
  * taking parts of a source (setting the (media_)[start|stop]
properties correctly)
  * applying effects on (one or several) source(s)
  * Synchronized composition outputs

  The next phase is working on making gnonlin even less cpu-intensive,
which is going to be improved a lot thanks to the upcoming GStreamer
0.9 release, and adding live non-linear editing (being allowed to add
live sources, and modifying the timeline while it's playing).

> 
> Nice to see that CVS repository alive again after all these years.

  Thanks :)

> 
>         Xav
> 
> 
   Edward