X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=docs%2Fservices.txt;h=63d6c5a3596cd24dbdeebc01311dfe07434492de;hb=975bb7d5efad02f60eef0ae56ecbfe67b58532b7;hp=86a9ab6366be2e2caa36943eb99dc0e73374fa9a;hpb=bac7cd7749bf743543e2e4f2897bbc1fe3f192c0;p=melted diff --git a/docs/services.txt b/docs/services.txt index 86a9ab6..63d6c5a 100644 --- a/docs/services.txt +++ b/docs/services.txt @@ -1,16 +1,15 @@ Service Documentation -Copyright (C) 2004 Ushodaya Enterprises Limited Authors: Charles Yates Dan Dennedy -Last Revision: 2004-11-07 +Last Revision: $Date$ SERVICES -------- - Services marked as "(Proprietary)" are not distributed with the GPL version - of mlt. + Services marked as "(Proprietary)" are not distributed with the LGPL + version of mlt. Producers --------- @@ -48,24 +47,18 @@ Producers Read Only Properties string resource - file location - double fps - this is fixed at 25 for PAL currently double source_fps - the framerate of the resource double aspect_ratio - sample aspect ratio of the resource - this is determined on every frame read Dependencies - ffmpeg must be configured as --enable-shared and installed prior - to compilation of mlt. + ffmpeg Known Bugs Audio sync discrepancy with some content. Not all libavformat supported formats are seekable. - Ogg Vorbis is currently broken. - MPEG seeking is inaccurate - doesn't seek to i-frames so you may - get junk for a few frames. - RAW DV seeking not supported. Fails to play beyond first frame of video of sources with PTS not starting at 0 (video4linux). @@ -377,6 +370,8 @@ Producers int in - in point int out - out point + int begin - when using an image sequence, this sets the starting + number. Mutable Properties @@ -703,7 +698,7 @@ Filters Details If you are using a consumer that uses ALSA, then you should start - jacks with the dummy driver: jackd -d dummy. + jackd with the dummy driver: jackd -d dummy. I also recommend using a period size of 2048: -p 2048. jackd -ddummy -r48000 -p2048 @@ -734,6 +729,48 @@ Filters Known Bugs + Currently, due to timing and synchronisation issues, the audio + is distorted with repeated samples and latency clicks. + no encapsulated resampling and jack runs at a fixed frequency + + ladspa + + Description + + Runs a JackRack project to process audio through a stack of + LADSPA filters without using Jack. + + Constructor Argument + + src - a JackRack file + + Details + + Due to audio integrity issues with the jackrack filter, this + filter is better for runtime, while jackrack is more suitable + for prototyping a rack file using the Jack Rack GUI. + + Initialisation Properties + + int in - in point + int out - out point + + Read Only Properties + + none + + Mutable Properties + + none + + Dependencies + + Jack, LADSPA, glib-2.0, libxml2 + Jack is still required because this coexists with the jackrack + filter. + + Known Bugs + no encapsulated resampling and jack runs at a fixed frequency luma @@ -847,6 +884,38 @@ Filters none + mono + + Description + + Mix all channels of audio into a mono signal and output it as + N channels. + + Constructor Argument + + channels - the number of output channels (default 2) + + Initialisation Properties + + none + + Read Only Properties + + none + + Mutable Properties + + none + + Dependencies + + none + + Known Bugs + + none + + obscure Description