4 The purpose of this element is to decode and render the media contained in a
5 given generic uri. The element extends GstPipeline and is typically used in
10 - accept and play any valid uri. This includes
11 - rendering video/audio
12 - overlaying subtitles on the video
13 - optionally read external subtitle files
14 - allow for hardware (non raw) sinks
15 - selection of audio/video/subtitle streams based on language.
16 - perform network buffering/incremental download
18 - support for visualisations with configurable sizes
19 - ability to reject files that are too big, or of a format that would require
20 too much CPU/memory usage.
21 - be very efficient with adding elements such as converters to reduce the
22 amount of negotiation that has to happen.
23 - handle chained oggs. This includes having support for dynamic pad add and
24 remove from a demuxer.
31 - performs the autoplugging of demuxers/decoders
32 - emits signals when for steering the autoplugging
33 - to decide if a non-raw media format is acceptable as output
34 - to sort the possible decoders for a non-raw format
35 - see also decodebin2 design doc
39 - combination of a source to handle the given uri, an optional queueing element
40 and one or more decodebin2 elements to decode the non-raw streams.
44 - handles display of audio/video/text.
45 - has request audio/video/text input pad. There is only one sinkpad per type.
46 The requested pads define the configuration of the internal pipeline.
47 - allows for setting audio/video sinks or does automatic sink selection.
48 - allows for configuration of visualisation element.
49 - allows for enable/disable of visualisation, audio and video.
53 - combination of one or more uridecodebin elements to read the uri and subtitle
55 - support for queuing new media to support gapless playback.
56 - handles stream selection.
57 - uses playsink to display.
58 - selection of sinks and configuration of uridecodebin with raw output formats.
64 playbin2 has an "about-to-finish" signal. The application should configure a new
65 uri (and optional suburi) in the callback. When the current media finishes, this
66 new media will be played next.