Libavfilter: Difference between revisions

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(libavfilter is not for audio only (and one day will not be for video only))
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Please read its [http://svn.mplayerhq.hu/soc/libavfilter/README?view=co README] to discover how to integrate it with ffmpeg and ffplay.
Please read its [http://svn.mplayerhq.hu/soc/libavfilter/README?view=co README] to discover how to integrate it with ffmpeg and ffplay.


==Reasons why a audio API is needed in FFmpeg==
==Reasons why a filter API is needed in FFmpeg==
FFmpeg's already well-known [[libavcodec]] module has become the de facto standard library for video decoding and encoding in free software projects. Unfortunately, no similar standard library has surfaced for audio/video filtering and otherwise working with audio/video stream once it has been decoded. Various multimedia projects (such as MPlayer, Xine, GStreamer, VirtualDub, etc.) have implemented their own filter systems to various degrees of success. What is needed is a high quality audio and video filter API - efficient, flexible enough to meet all the requirements which have led various projects to invent their own filter system, and yet easy to use or develop new filters with. This proposal is to implement a high quality video API and filter library for FFmpeg, where it can be easily used by other multimedia-related software projects.
FFmpeg's already well-known [[libavcodec]] module has become the de facto standard library for video decoding and encoding in free software projects. Unfortunately, no similar standard library has surfaced for audio/video filtering and otherwise working with audio/video stream once it has been decoded. Various multimedia projects (such as MPlayer, Xine, GStreamer, VirtualDub, etc.) have implemented their own filter systems to various degrees of success. What is needed is a high quality audio and video filter API - efficient, flexible enough to meet all the requirements which have led various projects to invent their own filter system, and yet easy to use or develop new filters with. This proposal is to implement a high quality video API and filter library for FFmpeg, where it can be easily used by other multimedia-related software projects.



Revision as of 05:40, 3 January 2008

Until it is incorporated into FFmpeg, you may get the libavfilter source from GSoC SVN repository:

svn checkout svn://svn.mplayerhq.hu/soc/libavfilter

Please read its README to discover how to integrate it with ffmpeg and ffplay.

Reasons why a filter API is needed in FFmpeg

FFmpeg's already well-known libavcodec module has become the de facto standard library for video decoding and encoding in free software projects. Unfortunately, no similar standard library has surfaced for audio/video filtering and otherwise working with audio/video stream once it has been decoded. Various multimedia projects (such as MPlayer, Xine, GStreamer, VirtualDub, etc.) have implemented their own filter systems to various degrees of success. What is needed is a high quality audio and video filter API - efficient, flexible enough to meet all the requirements which have led various projects to invent their own filter system, and yet easy to use or develop new filters with. This proposal is to implement a high quality video API and filter library for FFmpeg, where it can be easily used by other multimedia-related software projects.

Features needed


Feature wish list

Current ideas

Threads with previous discussions in the subject:


Mentors

A'rpi (has expressed interest of possibly helping with implementing a filter API in FFmpeg, he also volunteering to help porting the MPlayer filters too if a such API becomes available http://lists.mplayerhq.hu/pipermail/mplayer-dev-eng/2007-April/051164.html)


See also