General post-proc sources are MPlayer (libmpcodecs vf_*.

Create (or port) additional pre-process and post-process video filters to FFmpeg:.

Add a subtitle drawing support to simplify ffplay.c.

Create a SDK (Software Development Kit) with templates for the A/V filter APIs.

Before implementing any one of these items, ask first in the ffmpeg-devel mailing-list.

Warning: This is not an official wish list. make ffmpeg.c honor the aspect ratio outputted by the filter chain (thanks vdmsss for the bug report) - Updated: probably fixed, but maybe not printing the right PAR in the terminal.no frame rate estimation is supported (see post in -soc ) This filter is required for example when copying an AAC stream from a raw ADTS AAC or an MPEG-TS container to MP4A-LATM, to an FLV file, or to MOV/MP4 files.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. 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.

Various multimedia projects (such as MPlayer, Xine, GStreamer, VirtualDub, etc.) have implemented their own filter systems to various degrees of success. Unfortunately, no similar standard library has surfaced for audio/video filtering and otherwise working with audio/video stream once it has been decoded. Reasons why a filter API is needed in FFmpegįFmpeg's already well-known libavcodec module has become the de facto standard library for video decoding and encoding in free software projects. 1 Reasons why a filter API is needed in FFmpeg.

Ffmpeg filter vf