4 Services marked as "(Proprietary)" are not distributed with the GPL version
14 ffmpeg libavformat based producer for video and audio.
18 'file' - a filename specification or URL in the form:
19 [{protocol}|{format}]:{resource}[?{format-parameter}[&{format-parameter}]]
20 For example, video4linux:/dev/video1?width=320&height=240
21 Note: on the bash command line, '&' must be escaped as '\&'
22 Use 'ffmpeg -formats' to see a list of supported protocols
27 Format parameters only appear to be useful with 'video4linux' or
28 'audio_device' formats. For 'video4linux' the parameters are
29 width, height, frame_rate, frame_rate_base, and standard (ntsc|pal).
30 For 'audio_device' the parameters are channels and sample_rate.
32 Initialisation Properties
34 int video_index - index of video stream to use (-1 is off)
35 int audio_index - index of audio stream to use (-1 is off)
41 string resource - file location
42 double fps - this is fixed at 25 for PAL currently
43 double source_fps - the framerate of the resource
44 double aspect_ratio - sample aspect ratio of the resource
45 - this is determined on every frame read
49 ffmpeg must be configured as --enable-shared and installed prior
50 to compilation of mlt.
54 Audio sync discrepancy with some content.
55 Not all libavformat supported formats are seekable.
56 Ogg Vorbis is currently broken.
57 MPEG seeking is inaccurate - doesn't seek to i-frames so you may
58 get junk for a few frames.
59 RAW DV seeking not supported.
65 A friendly giant that likes to rhyme and throw rocks
69 'file' - a filename specification:
70 [{mlt-service}:]{resource} | {mlt-service}
71 - can also be the name of a producer service that can
72 accept the resource specified post construction.
74 Initialisation Properties
78 + all producer initialising properties
82 string resource - file location
83 + all producer read only properties
87 This producer is has two roles:
89 1. it handles the mappings of all file names to the other
91 2. it attaches normalising filters (rescale, resize and resample)
92 to the producers (when necessary).
94 This producer simplifies many aspects of use. Essentially, it
95 ensures that a consumer will receive images and audio precisely as
111 A simple colour generator.
115 colour - A colour value is a hexadecimal representation of RGB plus
116 alpha channel as 0xrrggbbaa.
117 - Also colours can be the words: white, black, red, green,
119 - The default colour is black.
121 Initialisation Properties
142 Test case pipe based producer for video and audio.
146 'file' - produce a/v from file
147 v4l - produce a/v from video4linux and dsp device
149 Initialisation Properties
151 string video_type - "file" or "v4l"
152 string video_file - file or v4l device
153 string video_size - WxH of video to produce (default: "")
154 int video_loop - loop video until audio exhausted (default: 0)
155 string audio_type - "file" or "dsp"
156 string audio_file - file or dsp device
157 int audio_rate - audio frequency (default: 48000)
158 int audio_channels - audio channels (default: 2)
159 int audio_track - audio track to use (default: 0)
160 int audio_loop - loop audio until video exhausted (default: 0)
163 double fps - output frames per second (default: 25)
164 double aspect_ratio - aspect ratio of video
168 string resource - file or "v4l"
169 int end_of_clip - holds 1 when input is exhausted
177 in point setting is broken.
179 Implementation does not allow fast random access.
185 libdv based decoder for video and audio.
189 'file' - produce a/v from file
191 Initialisation Properties
198 string resource - file location
199 double fps - output frames per second
200 int length - duration of resource (in frames)
204 string quality - one of "best," "fast" or anything else chooses
213 DVCPRO is incorrectly identified as 16:9 aspect ratio. You must use
214 libdv from CVS or a post 0.101 release.
220 MainConcept based dv decoder for video and audio.
224 'file' - produce a/v from file
226 Initialisation Properties
233 string resource - file location
234 double fps - output frames per second
235 int length - duration of resource (in frames)
239 MainConcept DV or DVCPRO SDK, libdv.
240 "dv_sdk" installed parallel to mlt.
250 MainConcept based mpeg decoder for video and audio.
254 'file' - produce a/v from file
256 Initialisation Properties
263 string resource - file location
264 double fps - output frames per second
265 double aspect_ratio - sample aspect ratio of video
266 int length - duration of resource (in frames)
270 MainConcept MPEG SDK.
271 "mpeg_sdk_release" installed parallel to mlt.
281 A title generator that uses the Pango international text layout
282 and Freetype2 font renderer.
286 string file - a text file containing Pango markup, see:
287 http://developer.gnome.org/doc/API/2.0/pango/PangoMarkupFormat.html
288 - requires xml-like encoding special chars from:
289 <, >, & -to- <, >, &
293 Supplying a filename with extension ".txt" causes the Fezzik
294 producer to load with pango. If the filename begins with "+" the
295 pango producer interprets the filename as pango text. This is a
296 shortcut to embed titles in inigo commands. For westley, it is
297 recommended that you embed the title text in the property value.
298 If you need to embed Pango markup in a westley XML file, then
299 enclose the value inside "<![CDATA[ ... ]]>".
301 Pango has builtin scaling. It will rescale the originally rendered
302 title to whatever the consumer requests. Therefore, it will lose
303 its aspect ratio if so requested, and it is up to the consumer to
304 request a proper width and height that maintains the image aspect.
306 Initialisation Properties
313 string markup - a UTF-8 string containing Pango markup see:
314 http://developer.gnome.org/doc/API/2.0/pango/PangoMarkupFormat.html
315 - requires xml-like encoding special chars from:
316 <, >, & -to- <, >, &
317 string fgcolour - an RGBA colour specification of the text
319 string bgcolour - an RGBA colour of the background rectangle
320 string align - paragraph alignment: left, centre, right
321 - also, numbers 0, 1 and 2 can be used respectively.
322 int pad - the number of pixels to pad the background rectangle
323 beyond edges of text. default 0.
324 string markup - see constructor argument
325 string text - non-markup string in UTF-8 encoding (can contain
326 markup chars un-encoded)
327 string font - the default typeface to use when not using markup.
328 default "Sans 48". FreeType2 renders at 72 dpi.
332 string resource - the text/markup file or "pango" if no file.
333 int real_width - the original, unscaled width of the rendered title.
334 int real_height - the original, unscaled height of the title.
335 int width - the last requested scaled image width.
336 int height - the last requested scaled image height.
340 libpango-1.0, libpangoft2-1.0, libfreetype, libgdk_pixbuf-2.0,
341 libglib-2.0, libgobject-2.0, libgmodule-2.0, libfontconfig.
345 The foreground and background Pango markup span attributes are not
347 Word wrapping is not supported.
353 A still graphics to video generator using gdk-pixbuf
357 'file' - The name of a graphics file loadable by
358 a gdk-pixbuf loader. see /usr/lib/gdk-pixbuf/loaders
359 definitely png, jpeg, tiff, pnm, and xpm
360 - If "%" in filename, the filename is used with sprintf
361 generate a filename from a counter for multi-file/flipbook
362 animation. The file sequence ends when numeric
364 - If filename contains "/.all.", suffix with an extension to
365 load all pictures with matching extension from a directory.
366 - If filename contains the string "<svg", then pixbuf tries
367 to load the filename as inline SVG XML, which is convenient
368 for inigo commands. For westley XML, set the resource
369 property value with inline XML embedded using a CDATA node
370 ("<![CDATA[ ... ]]>").
374 Pixbuf has builtin scaling. It will rescale the originally rendered
375 title to whatever the consumer requests. Therefore, it will lose
376 its aspect ratio if so requested, and it is up to the consumer to
377 request a proper width and height that maintains the image aspect.
379 Initialisation Properties
386 int ttl - how long (in frames) to repeat each picture in file
387 sequences. default is 25.
391 string resource - file location. See Constructor Argument above.
392 int real_width - the original, unscaled width of the rendered title.
393 int real_height - the original, unscaled height of the title.
394 int width - the last requested scaled image width.
395 int height - the last requested scaled image height.
399 libgdk_pixbuf-2.0, libglib-2.0, libgobject-2.0, libgmodule-2.0
403 XXX: in/out settings are incorrectly handled.
409 Reads a stream of contiguous PPM images.
413 command - a shell command to run something that produces ppm
416 Initialisation Properties
422 string resource - the command
430 Since it uses pipes, it is not compatible with bluefish.
436 Construct a service network from an XML description.
437 See docs/westley.txt.
441 file - an XML text file containing westley XML (schema pending)
445 string resource - file location
453 Non-referenced producers and playlists are not destroyed until the
454 network is destroyed.
455 A referenced producer or playlist must appear before the reference.
456 A filter that occurs before a producer has been defined causes a
463 OGG Vorbis file reader.
467 'file' - file to use (only .ogg supported at the moment)
469 Initialisation Properties
476 double fps - this is fixed at 25 for PAL currently
484 Fixed frame size (PAL audio chunks).
485 Doesn't cover ogg files with multiple, differing sections.
494 Shift the luma component using a constant value.
498 start - the constant floating point numeric value to apply.
501 Initialisation Properties
505 double start - see Constructor Argument above.
506 double end - the ending adjustment value. the filter interpolates
507 between the start and end adjustments over the
508 duration of the effect.
520 Does not go completely to black or white.
527 Deinterlace a frame consisting of two fields using bob, weave,
528 greedy, one-field, and linear blend methods. This code is
529 appropriated from the Xine XV video output plugin.
533 method - a string containing the deinterlace method: bob, weave,
534 greedy, onefield, or linearblend. The default is
537 Initialisation Properties
552 If the frame properties "progressive" or "consumer_progressive"
553 are non-zero, then the filter is not applied. Also, if applied,
554 this sets the frame property "progressive" to 1.
562 Not a bug, but it only provides fair quality.
569 Use ffmpeg executable to substitute audio stream.
573 file - filename of a WAV, Ogg Vorbis (--enable-vorbis),
574 MP3 (--enable-mp3lame), or AC-3 (--enable-a52) audio file.
576 Initialisation Properties
583 string resource - file
587 ffmpeg plus for ffmpeg:
588 libogg and libvorbis for Ogg Vorbis, libmp3lame for MP3, liba52 for AC-3.
592 Uses pipes and is therefore not compatible with bluefish.
599 Adjust image luma using a non-linear power-law curve
603 gamma - a floating point value. The default is 1.0, or none.
605 Initialisation Properties
612 double gamma - the exponential factor of the power-law curve
627 Convert colour image to greyscale
633 Initialisation Properties
654 Applies a luma transition between the current and next frames.
655 Useful for transitions from a slideshow created using producer
662 Initialisation Properties
673 int period - how long to wait between success iterations of the
674 transition. For best results set this to a multiple
675 of ttl used in pixbuf. The default is 24.
677 luma. - all properties beginning with "luma." are passed to the
678 encapsulated luma transition. For example, luma.out controls
679 the duration of the wipe.
683 transition_luma and its dependencies
700 Initialisation Properties
702 string start - in the format X,Y:WxH[:PWxPY]
703 - PWxPY is the size of the averaging region in pixels.
704 string end - in the format X,Y:WxH[:PWxPY]
724 Apply one or filters to a region of the video image. The region
725 can be shaped as well using the alpha channel of another producer.
729 file - A file whose alpha channel will "shape" the region.
730 - The string "circle" is a shortcut but it requires pixbuf with
731 the librsvg loader. The circle is automatically stretched
732 to the region to create an ellipse.
734 Initialisation Properties
738 plus and region transition properties
742 see the region transition
750 "circle" is unpredictable in the absence of the librsvg pixbuf loader.
757 Adjust an audio stream's sampling rate.
758 This filter is automatically invoked by Fezzik for the sake of
759 normalisation over inputs and with the consumer.
763 frequency - a numeric value for the new sample rate
765 Initialisation Properties
772 int frequency - the target sample rate
786 Scale the producer video frame size to match the consumer.
787 This filter is automatically invoked by Fezzik in order to normalise
792 interpolation - the rescaling method, one of:
793 nearest (lowest quality, fastest),
795 bilinear (default; good quality, moderate speed),
796 hyper (best quality, slowest).
798 Initialisation Properties
805 string interpolation - see constructor argument above
807 If a property "consumer_aspect_ratio" exists on the frame, then
808 rescaler normalises the producer's aspect ratio and maximises the
809 size of the frame, but may not produce the consumer's requested
810 dimension. Therefore, this option works best in conjunction with the
811 resize filter. This behavior can be disabled by another service by
812 either removing the property, setting it to zero, or setting
813 frame property "distort" to 1.
817 libgdk_pixbuf-2.0, libglib-2.0, libgobject-2.0, libgmodule-2.0
827 Image scaling and padding and field order adjustment.
831 Normally resize is used to pad the producer's
832 output to what the consumer has requested after an upstream rescale
833 filter first scales the image to maximise usage of the image area.
834 This filter also adjusts the field order to lower field first
835 if the frame property "top_field_first" has been set to 1.
836 Therefore, when done, it sets the top_field_first to 0.
837 This filter is automatically invoked by Fezzik as part of image
838 sample aspect ratio normalisation.
842 scale - "affine" to use affine transform scaling, otherwise
845 Initialisation Properties
860 Assumes lower field first output.
866 Adjust an audio stream's volume level
870 gain - a string containing one of:
871 - a floating point value of the gain adjustment
872 - a numeric value with the suffix "dB" to adjust in terms of decibels
873 - "normalise" to normalise the volume to the target amplitude -12dBFS
875 Initialisation Properties
879 int window - the number of video frames over which to smooth normalisation.
884 string gain - same as constructor argument above
886 string normalise - normalise the volume to the amplitude:
887 - a numeric value with the suffix "dB" to set amplitude in decibels
888 - a floating point value of the relative volume
889 - an unspecified value uses the default -12dBFS
891 string limiter - limit all samples above:
892 - a numeric value with the suffix "dB"
893 - a floating point value ( dB = 20 * log10(x) )
894 - an unspecified value uses the default -6dBFS
896 double max_gain - a floating point or decibel value of the maximum gain that
897 can be applied during normalisation.
898 - an unspecified value uses the default 20dB
900 string end - a gain value just like the gain property above.
901 This causes the gain to be interpolated from 'gain' to 'end'
904 int window - the size of the normalising smoothing buffer in video frame units.
905 - the smoothing buffer prevents erratic gain changes.
906 - the default value is 75 video frames.
908 gain can be applied as a factor to the normalise amplitude!
922 Add a watermark to the frames.
926 resource - the producer to use (ie: a .png)
928 Initialisation Properties
930 string resource - the producer to use
931 string factory - producer required for the resource ('fezzik')
932 string geometry - composite geometry
933 string distort - control scaling
943 mlt core modules and optionally, fezzik
956 A key-framable alpha-channel compositor for two frames.
960 Performs dissolves and luma wipes in addition to alpha compositing.
962 By default, the aspect ratio of the B frame is respected and the
963 size portion of the geometry specification simply defines a
966 This performs field-based rendering unless the A frame property
967 "progressive" or "consumer_progressive" or the transition property
968 "progressive" is set to 1.
972 string start - a geometry specification as X,Y:WxH[!][:mix]
973 - X, Y, W, H are assumed to pixel units unless they
975 - '!' is a shortcut to specify distort, see below.
976 - mix is always a 2 digit percentage, defaults to 100.
977 - default is "85%,5%:10%x10%"
979 Initialisation Properties
981 string end - the ending size and position.
982 string key[F] - X,Y:WxH[:mix] - set a key frame for geometry between
983 the in and out. F is a frame number and can be
984 negative to make it relative to the out point.
987 string factory - The name of a factory service used as a non-PGM
988 producer loader. The default is fezzik.
996 int progressive - set to 1 to disable field-based rendering.
997 string distort - when set, causes the B frame image to fill the WxH
998 completely with no regard to B's aspect ratio.
999 string halign - when not distorting, set the horizontal alignment
1000 of B within the geometry rectangle.
1001 - one of: left (0), centre (1), or right (2).
1002 - the default is left.
1003 string valign - when not distorting, set the vertical alignment of
1004 B within the geometry rectangle.
1005 - one of: top (0), middle (1), or bottom (2).
1006 - the default is top.
1007 string luma - the luma map file name. If not supplied, a dissolve.
1008 double softness - only when using a luma map, how soft to make the
1009 edges between A and B. 0.0 = no softness. 1.0 =
1011 Any property starting with "luma." is passed to the non-PGM luma
1020 Assumes lower field first during field rendering.
1026 A generic dissolve and wipe transition processor.
1031 from how it uses a grayscale "map" file. As the luma value varies
1032 over time, a threshold filter is applied to the map to determine
1033 what parts of frame A vs. frame B to show. It reads PGM files
1034 up to 16 bits! Alternatively, it can use the first frame from any
1035 producer that outputs yuv, but it will be limited to the luma
1036 gamut of 220 values.
1037 This performs field-based rendering unless the A frame property
1038 "progressive" or "consumer_progressive" or the transition property
1039 "progressive" is set to 1.
1041 Constructor Argument
1043 string resource - the luma map file name - either PGM or any other
1045 - If not supplied, a dissolve.
1047 Initialisation Properties
1051 string factory - The name of a factory service used as a non-PGM
1052 producer loader. The default is Fezzik.
1056 string resource - same as above
1057 double softness - only when using a luma map, how soft to make the
1058 edges between A and B. 0.0 = no softness. 1.0 =
1060 Any property starting with "producer." is passed to the non-PGM luma
1063 Read Only Properties
1073 Assumes lower field first output.
1079 An two stream audio mixer.
1081 Constructor Argument
1085 Initalisation Properties
1092 double start - the mix level to apply to the second frame.
1093 - any negative value causes an automatic crossfade from 0 to 1.
1094 double end - the ending value of the mix level. mix level will be interpolated
1095 from start to end over the in-out range.
1096 int reverse - set to 1 to reverse the direction of the mix.
1098 Read Only Properties
1108 Samples from the longer of the two frames are discarded.
1115 Apply zero or more filters to B frame as it is composited onto
1116 a region of the A frame. The "shape" of the region can be defined
1117 by the alpha channel of a third producer.
1119 Constructor Argument
1121 resource - a shape producer
1123 Initialisation Properties
1125 string resource - nothing is rectangle, "circle" is a pixbuf-
1126 generated SVG circle, anything else is loaded by the factory.
1127 string factory - the service that creates the shape producer.
1128 - the default is fezzik.
1129 string filter[N] - one or more filters to apply. All filter
1130 properties are passed using the same filter "key"
1131 Any property starting with "composite." is passed to the
1132 encapsulated composite transition.
1134 Read Only Properties
1140 transition_composite
1150 bluefish (Proprietary)
1154 BlueFish444 audio and video output module.
1156 Constructor Argument
1158 string video_standard - "PAL" (default) or "NTSC"
1160 Initialisation Properties
1162 int video_standard - 0 = PAL, 1 = NTSC
1164 Read Only Properties
1170 BlueVelvet SDK installed parallel to mlt in "bluefish."
1174 Does not work with any service that uses pipes!
1176 If mlt crashes, you must reload the BlueDriver kernel module
1177 due to unreleased DMA buffers.
1179 Needs an argument or property for multi-card address.
1187 Constructor Argument
1189 string target - the filename to write to, e.g. /dev/dv1394.
1191 Initialisation Properties
1193 int buffer - the number of frames to buffer, minimum 1, default 25.
1194 string rescale - a rescale method, see the Filters/rescale.
1198 int progressive - indicates whether to use progressive or field-
1199 based rendering, default 0 (off).
1201 Read Only Properties
1217 Simple DirectMedia Layer audio and video output module.
1219 Constructor Argument
1221 string video_standard - "PAL" (default), "NTSC", or "WxH"
1223 Initialisation Properties
1225 int buffer - the number of frames to buffer, minimum 1, default 25.
1226 string rescale - a rescale method, see the Filters/rescale.
1227 - Hint: "none" works very good with SDL output.
1231 double volume - audio level factor
1232 int video_off - if 1, disable video output
1233 int audio_off - if 1, disable audio output
1234 int scale_overlay - if 1, resample video from source pixel aspect
1235 ratio to square pixels.
1236 int progressive - indicates whether to use progressive or field-
1237 based rendering, default 0 (off).
1239 Read Only Properties
1245 libSDL-1.2, libasound, libaudio, libXt, libX11, libXext, libSM, libICE
1255 Serialise the service network to XML.
1256 See docs/westley.txt for more information.
1258 Constructor Argument
1260 resource - the name of a file in which to store the XML.
1261 - stdout is default.
1263 Initialisation Properties
1265 string resource - same as above.
1273 Untested arbitrary nesting of multitracks and playlists.
1274 Property "id" is generated as service type followed by number if
1275 no property named "id" exists, but it fails to guarantee uniqueness.