+++ /dev/null
-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)
- intint in - in point
- int 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
-
- int in - in point
- int out - out point
-
- Read Only Properties
-
- string resource - file location
- double fps - output frames per second
- double aspect_ratio - aspect ratio of video]
- int length - duration of resource (in frames)
-
- 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
-
- int in - in point
- int out - out point
-
- Read Only Properties
-
- string resource - file location
- double fps - output frames per second
- double aspect_ratio - aspect ratio of video
- int length - duration of resource (in frames)
-
- Dependencies
-
- mainconcept dv sdk and libdv.
- "dv_sdk" installed parallel to mlt.
-
- Known Bugs
-
- Can be problematic with source NTSC DV files? really? yes - try
- playing pond.dv...
-
- mcmpeg
-
- Description
-
- Mainconcept based mpeg decoder for video and audio.
-
- Constructor Argument
-
- 'file' - produce a/v from file
-
- Initialisation Properties
-
- int in - in point
- int 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.
- "mpeg_sdk_demo" installed parallel to mlt.
-
- Known Bugs
-
- None.
-
- pango
-
- Description
-
- A title generator that uses the Pango international text layout
- and Freetype2 font renderer.
-
- Constructor Argument
-
- string file - a text file containing Pango markup, see:
- http://developer.gnome.org/doc/API/2.0/pango/PangoMarkupFormat.html
- - requires xml-like encoding special chars: <, >, & to <, >, &
-
- Initialisation Properties
-
- int in - in point
- int out - out point
-
- Mutable Properties
-
- int video_standard - enum mlt_video_standard from mlt_frame.h
- PAL = 0, NTSC = 1
- this determines proper pixel aspect ratio
-
- string markup - a string containing Pango markup see:
- http://developer.gnome.org/doc/API/2.0/pango/PangoMarkupFormat.html
- - requires xml-like encoding special chars: <, >, & to <, >, &
-
- int fgcolor - an rgba color specification of the text (i.e. 0xrrggbbaa)
- int bgcolor - an rgba color of the background rectangle
- int align - paragraph alignment: 0 = left, 1 = center, 2 = right
- int pad - the number of pixels to pad the background rectangle beyond edges of text
- default 0
- string markup - see constructor argument
- string text - non-markup text (can contain markup chars un-encoded)
- string font - the default typeface to use when not using markup
- default "Sans 48"
- int x - the horizontal position of the title on the frame
- default 0
- int y - the vertical position of the title on the frame
- default 0
- double mix - the overall opacity control of the generated title
- default 1.0
-
- Read Only Properties
-
- string resource - the text/markup file or "pango" if no file
-
- Dependencies
-
- libpango-1.0, libpangoft2-1.0, libfreetype, libgdk_pixbuf-2.0, libglib-2.0,
- libgobject-2.0, libgmodule-2.0, libfontconfig
-
- Known Bugs
-
- no frame-alignment functionality
-
- pixbuf
-
- Description
-
- A graphics overlay generator using gdk-pixbuf
-
- Constructor Argument
-
- 'file' - The name of a graphics file loadable by
- a gdk-pixbuf loader. see /usr/lib/gdk-pixbuf/loaders
- definitely png, jpeg, tiff, pnm, and xpm
- - If "%" in filename, the filename is used with sprintf
- generate a filename from a counter for multi-file/flipbook animation.
- The file sequence ends when numeric discontinuity >100.
- - If filename contains "/.all.", suffix with an extension to load
- all pictures with matching extension from a directory
-
- Initialisation Properties
-
- int in - in point
- int out - out point
-
- Mutable Properties
-
- int video_standard - enum mlt_video_standard from mlt_frame.h
- PAL = 0, NTSC = 1
- this determines proper pixel aspect ratio
- double ttl - how long (seconds) to repeat each picture in file sequences
- int x - the horizontal offset from the left edge of the frame
- int y - the vertical offset from the top edge of the frame
- double mix - the opacity factor to apply to the second frame
- (used in addition to alpha channel).
-
-
- Read Only Properties
-
- string resource - file location
-
- Dependencies
-
- libgdk_pixbuf-2.0, libglib-2.0, libgobject-2.0, libgmodule-2.0
-
- Known Bugs
-
- in/out settings are incorrectly handled.
-
- ppm
-
- Description
-
- Reads a stream of contiguous PPM images.
-
- Constructor Argument
-
- command - a shell command to run something that produces ppm
- streams on stdout.
-
- Initialisation Properties
-
- none
-
- Read Only Properties
-
- string resource - the command
-
- Dependencies
-
- none
-
- Known Bugs
-
- Since it uses pipes, it is not compatible with bluefish.
-
-
-Filters
--------
-
- deinterlace
-
- Description
-
- Deinterlace a frame consisting of two fields by linearly blending.
-
- Constructor Argument
-
- none
-
- Initialisation Properties
-
- int in - in point
- int out - out point
-
- Read Only Properties
-
- none
-
- Dependencies
-
- none
-
- Known Bugs
-
- Not a bug, but it only provides fair quality at a fair performance;
- i.e., it excels at neither.
-
- ffmpeg_dub
-
- Description
-
- Use ffmpeg executable to substitute audio stream.
-
- Constructor Argument
-
- file - filename of a WAV, Ogg Vorbis (--enable-vorbis),
- MP3 (--enable-mp3lame), or AC-3 (--enable-a52) audio file.
-
- Initialisation Properties
-
- int in - in point
- int out - out point
-
- Read Only Properties
-
- string resource - file
-
- Dependencies
-
- ffmpeg plus for ffmpeg:
- libogg and libvorbis for Ogg Vorbis, libmp3lame for MP3, liba52 for AC-3.
-
- Known Bugs
-
- Uses pipes and is therefore not compatible with bluefish.
-
- gamma
-
- Description
-
- Adjust image luma using a non-linear power-law curve
-
- Constructor Argument
-
- gamma - a floating point value
-
- Initialisation Properties
-
- int in - in point
- int out - out point
-
- Mutable Properties
-
- double gamma - the exponential factor of the power-law curve
-
- Dependencies
-
- none
-
- Known Bugs
-
- none
-
- greyscale
-
- Description
-
- Convert color image to greyscale
-
- Constructor Argument
-
- none
-
- Initialisation Properties
-
- int in - in point
- int out - out point
-
- Read Only Properties
-
- none
-
- Dependencies
-
- none
-
- Known Bugs
-
- none
-
- resize
-
- Description
-
- Image scaling and padding
-
- Constructor Argument
-
- scale - "affine" to use affine transform scaling, otherwise
- center and pad.
-
- Initialisation Properties
-
- int in - in point
- int out - out point
-
- Read Only Properties
-
- none
-
- Dependencies
-
- none
-
- Known Bugs
-
- none
-
- volume
-
- Description
-
- Adjust an audio stream's volume level
-
- Constructor Argument
-
- volume - a floating point value of the factor
-
- Initialisation Properties
-
- int in - in point
- int out - out point
-
- Mutable Properties
-
- double volume - the factor applied to each sample
-
- Dependencies
-
- none
-
- Known Bugs
-
- none
-
- resample
-
- Description
-
- Adjust an audio stream's sampling rate
-
- Constructor Argument
-
- frequency - a numeric value for the new sample rate
-
- Initialisation Properties
-
- int in - in point
- int out - out point
-
- Mutable Properties
-
- int frequency - the target sample rate
-
- Dependencies
-
- libresample
-
- Known Bugs
-
- none
-
-Transitions
------------
-
- composite
-
- Description
-
- An alpha-channel based compositor for two frames.
-
- Constructor Argument
-
- mix - see below
-
- Initialisation Properties
-
- int in - in point
- int out - out point
-
- Mutable Properties
-
- int x - the horizontal offset from the left edge of the frame
- int y - the vertical offset from the top edge of the frame
- double mix - the opacity factor to apply to the second frame
- (used in addition to alpha channel).
- - any negative value causes an automatic dissolve
-
- Read Only Properties
-
- none
-
- Dependencies
-
- none
-
- Known Bugs
-
- Need to add field-based rendering.
-
- luma
-
- Description
-
- A generic dissolve and wipe transition processor. It gets its name
- from how it uses a grayscale "map" file. As the luma value varies
- over time, a threshold filter is applied to the map to determine
- what parts of frame A vs. frame B to show. It only reads PGM
- files, but it does handle 16 bit PGM. This performs field-based
- rendering.
-
- Constructor Argument
-
- string file - the luma map file name. If not supplied, a dissolve.
-
- Initialisation Properties
-
- int in - in point
- int out - out point
-
- Mutable Properties
-
- string filename - same as above
- double softness - only when using a luma map, how soft to make the
- edges between A and B. 0.0 = no softness. 1.0 =
- too soft.
-
- Read Only Properties
-
- none
-
- Dependencies
-
- none
-
- Known Bugs
-
- The luma map must be the same size as the B frame.
- The PGM parser does not handle comments.
-
- mix
-
- Description
-
- An two stream audio mixer.
-
- Constructor Argument
-
- mix - see below
-
- Initalisation Properties
-
- int in - in point
- int out - out point
-
- Mutable Properties
-
- double mix - the mix level to apply to the second frame.
- - any negative value causes an automatic crossfade.
-
- Read Only Properties
-
- none
-
- Dependencies
-
- none
-
- Known Bugs
-
- Samples from the longer of the two frames are discarded.
-
-Consumers
----------
-
- bluefish
-
- Description
-
- BlueFish444 audio and video output module.
-
- Constructor Argument
-
- string video_standard - "PAL" (default) or "NTSC"
-
- Initialisation Properties
-
- int video_standard - 0 = PAL, 1 = NTSC
-
- Read Only Properties
-
- none
-
- Dependencies
-
- BlueVelvet SDK installed parallel to mlt in "bluefish."
-
- Known Bugs
-
- Does not work with any service that uses pipes!
-
- If mlt crashes, you must reload the BlueDriver kernel module
- due to unreleased DMA buffers.
-
- Needs an argument or property for multi-card address.
-
- ffmpeg
-
- Description
- Constructor Argument
- Initialisation Properties
- Read Only Properties
- Dependencies
- Known Bugs
-
- libdv
-
- Description
-
- libdv dv producer.
-
- Constructor Argument
-
- string video_standard - "PAL" (default) or "NTSC"
-
- Initialisation Properties
- Read Only Properties
- Dependencies
- Known Bugs
-
- sdl
-
- Description
-
- Simple DirectMedia Layer audio and video output module.
-
- Constructor Argument
-
- string video_standard - "PAL" (default), "NTSC", or "WxH"
-
- Mutable Properties
-
- double volume - audio level factor
- int video_off - if 1, disable video output
- int audio_off - if 1, disable audio output
- int scale_overlay - if 1, resample video from source pixel aspect
- ratio to square pixels.
-
- Read Only Properties
-
- none
-
- Dependencies
-
- libSDL-1.2, libasound, libaudio, libXt, libX11, libXext, libSM, libICE
-
- Known Bugs
-
- NTSC handling needs tightening up - sdl:NTSC is the only valid
- constructor for NTSC playback at the moment.
-
projects / mlt / blobdiff