* Plugin system
+
* Project file load/save support (GESFormatter)
Status:
but could also contain extra information provided by 3rd party
modules.
+ The information regarding the various streams (and obtained through
+ optionally running GstDiscoverer) is not stored and has to be
+ re-analyzed else where.
+
Definition:
Material: n, The substance or substances out of which a thing is or
can be made.
A Material object contains all the information which is independent
of the usage of that material in a timeline.
+ A Material contains the list of 'streams' that can be provided with
+ as much information as possible (ex: contains audio and video
+ streams with full caps information, or better yet the output of
+ GstDiscoverer).
+
+ A Material contains the various Metadata (author, title, origin,
+ copyright ,....).
+
A Material object can specify the TimelineSource class to use in a
Layer.
resolution/quality/... version for the editing phase and the
original material for final rendering phase).
+ Requires:
+ GESMaterial
+
* Editing modes (Ripple/Roll/Slip/Slide)
+ Status:
+ Not implemented.
+
Problems:
Most editing relies on heavy usage of 4 editing tools which editors
will require. Ripple/Roll happen on edit points (between two clips)
aspect ratio of 4:3, we will make the width of the two videos
be equal without distorting their respective aspect-ratios.
+ Requires:
+ GESMaterial
+
See also:
Video compositing and audio mixing
* Video compositing and audio mixing
+ Status:
+ Not implemented. The bare minimum to implement are the static
+ absolute property handling. Relative/variable properties and group
+ handling can be done once we know how to handle object grouping.
+
Problems:
Editing requires not only a linear combination of cuts and
sequences, but also mixing various content/effect at the same
channels in the case of 7.1 upmixing) WITHOUT any extra loss in
quality.
- Add a set of extensible properties to the base source classes
- relative to compositing and mixing.
- The properties values can be both set/stored as 'relative' values
+ Create a new 'CompositingProperties' object for audio and video
+ which is an extensible set of properties for media-specific
+ positioning. This contains the properties mentionned above.
+
+ Add the CompositingProperties object to the base GESTrackObject
+ which points to the audio or video CompositingProperties
+ object (depending on what format that object is handling).
+
+ Provide convenience functions to retrieve and set the audio or video
+ compositing properties of a GESTrackObject. Do the same for the
+ GESTimelineObject, which proxies it to the relevant GESTrackObject.
+
+ Create a new GESTrack{Audio|Video}Compositing GstElement which will
+ be put in each track as a priority 0 expandable GnlOperation.
+ That object will be able to figure out which
+ mixing/scaling/conversion elements to use at any given time by
+ inspecting:
+ * The various GESTrackObject Compositing Properties
+ * The various GESTrackObject GESMaterial stream properties
+ * The GESTrack target output GstCaps
+
+ The properties values could be both set/stored as 'relative' values
and as 'absolute' values in order to handle any input/output formats
or setting.
changes, all object positioning will change relatively to that
format.
- Add {audio|video}mixer elements in the Tracks where applicable, and
- take into account input/output formats and relative values to apply
- the most efficient processing.
+ Requires:
+ GESMaterial
See also:
Coherent handling of Content in different formats
logos/videos, bluescreen, ...).
Those streams need to be handle-able by the user just like
- non-alpha videos.
+ non-alpha videos without losing the transparency regions (i.e. it
+ should be properly blended with the underlying regions).