Producers
---------

	ffmpeg

		Description:

			Test case pipe based producer for video and audio.

		Constructor argument:

			'file'	- produce a/v from file
			v4l		- produce a/v from video4linux and dsp device

		Initialisation Properties

			string video_type - "file" or "v4l"
			string video_file - file or v4l device
			string video_size - WxH of video to produce (default: "")
			int video_loop - loop video until audio exhausted (default: 0)
			string audio_type - "file" or "dsp"
			string audio_file - file or dsp device
			int audio_rate - audio frequency (default: 48000)
			int audio_channels - audio channels (default: 2)
			int audio_track - audio track to use (default: 0)
			int audio_loop - loop audio until video exhausted (default: 0)
			timecode in - in point
			timecode out - out point
			double fps - output frames per second (default: 25)
			double aspect_ratio - aspect ratio of video

		Read Only Properties

			string resource - file or "v4l"
			int end_of_clip - holds 1 when input is exhausted

		Dependencies

			ffmpeg executable.

		Known Bugs

			in point setting is broken.

			Implementation does not allow fast random access.

	libdv

		Description:

			libdv based decoder for video and audio.

		Constructor argument:

			'file'	- produce a/v from file

		Initialisation Properties

			timecode in - in point
			timecode out - out point

		Read Only Properties

			string resource - file location
			double fps - output frames per second 
			double aspect_ratio - aspect ratio of video

		Dependencies

			libdv.

		Known Bugs

			None.

	mcdv

		Description:

			Mainconcept based dv decoder for video and audio.

		Constructor argument:

			'file'	- produce a/v from file

		Initialisation Properties

			timecode in - in point
			timecode out - out point

		Read Only Properties

			string resource - file location
			double fps - output frames per second 
			double aspect_ratio - aspect ratio of video

		Dependencies

			mainconcept dv sdk and libdv.

		Known Bugs

			Can be problematic with source NTSC DV files?

	mcmpeg

		Description:

			Mainconcept based mpeg decoder for video and audio.

		Constructor argument:

			'file'	- produce a/v from file

		Initialisation Properties

			timecode in - in point
			timecode out - out point

		Read Only Properties

			string resource - file location
			double fps - output frames per second 
			double aspect_ratio - aspect ratio of video

		Dependencies

			mainconcept mpeg sdk.

		Known Bugs

			None.

	pango
	pixbuf
	ppm


Filters
-------

	deinterlace
	ffmpeg_dub
	gamma
	greyscale
	resize

Transitions
-----------

	composite

Consumers
---------

	bluefish
	ffmpeg
	sdl