Section 1: user commands and tools
NAME fftwl-wisdom – create wisdom (pre-optimized FFTs) SYNOPSIS fftwl-wisdom [OPTION]… [SIZE]… DESCRIPTION fftwl-wisdom is a utility to generate FFTW wisdom files, which contain saved information about how to optimally compute (Fourier) transforms of various sizes. FFTW is a free library to compute discrete Fourier transforms in one or more dimensions, for arbitrary sizes, and of…
NAME fftwf-wisdom – create wisdom (pre-optimized FFTs) SYNOPSIS fftwf-wisdom [OPTION]… [SIZE]… DESCRIPTION fftwf-wisdom is a utility to generate FFTW wisdom files, which contain saved information about how to optimally compute (Fourier) transforms of various sizes. FFTW is a free library to compute discrete Fourier transforms in one or more dimensions, for arbitrary sizes, and of…
NAME fftw-wisdom – create wisdom (pre-optimized FFTs) SYNOPSIS fftw-wisdom [OPTION]… [SIZE]… DESCRIPTION fftw-wisdom is a utility to generate FFTW wisdom files, which contain saved information about how to optimally compute (Fourier) transforms of various sizes. FFTW is a free library to compute discrete Fourier transforms in one or more dimensions, for arbitrary sizes, and of…
NAME fftw-wisdom-to-conf – generate FFTW wisdom (pre-planned transforms) SYNOPSIS fftw-wisdom-to-conf [< INPUT] [> OUTPUT] DESCRIPTION fftw-wisdom-to-conf is a utility to generate C configuration routines from FFTW wisdom files, where the latter contain saved information about how to optimally compute (Fourier) transforms of various sizes. A configuration routine is a C subroutine that you link into…
NAME fftest – tests force-feedback devices. SYNOPSIS fftest <device> DESCRIPTION fftest provides a variety of tests which can be applied to force-feedback devices. Beware, the tests may damage your device! OPTIONS <device> The device to test. SEE ALSO ffcfstress(1), ffmvforce(1), jstest(1). AUTHOR fftest was written by Johann Deneux. This manual page was written by Stephen…
NAME ffset – set force-feedback device parameters SYNOPSIS ffset <device> [-g <gain>] [-a <autocenter strength>] DESCRIPTION ffset sets the gain and autocenter strength of a force-feedback device. OPTIONS <device> The device to configure. -g <gain> The gain (0-100). -a <autocenter strength> The autocenter strength (0-100). SEE ALSO ffcfstress(1), ffmvforce(1), fftest(1), jscal(1), jstest(1). AUTHOR ffset was…
NAME ffserver – ffserver video server SYNOPSIS ffserver [options] DESCRIPTION ffserver is a streaming server for both audio and video. It supports several live feeds, streaming from files and time shifting on live feeds. You can seek to positions in the past on each live feed, provided you specify a big enough feed storage. ffserver…
ffserver – ffserver video server Synopsis ffserver [options] Description ffserver is a streaming server for both audio and video. It supports several live feeds, streaming from files and time shifting on live feeds. You can seek to positions in the past on each live feed, provided you specify a big enough feed storage. ffserver is…
NAME ffprobe – ffprobe media prober SYNOPSIS ffprobe [options] [input_url] DESCRIPTION ffprobe gathers information from multimedia streams and prints it in human- and machine-readable fashion. For example it can be used to check the format of the container used by a multimedia stream and the format and type of each media stream contained in it….
ffprobe – ffprobe media prober Synopsis ffprobe [options] [input_url] Description ffprobe gathers information from multimedia streams and prints it in human- and machine-readable fashion. For example it can be used to check the format of the container used by a multimedia stream and the format and type of each media stream contained in it. If…
NAME ffplay – FFplay media player SYNOPSIS ffplay [options] [input_url] DESCRIPTION FFplay is a very simple and portable media player using the FFmpeg libraries and the SDL library. It is mostly used as a testbed for the various FFmpeg APIs. OPTIONS All the numerical options, if not specified otherwise, accept a string representing a number…
ffplay – FFplay media player Synopsis ffplay [options] [input_url] Description FFplay is a very simple and portable media player using the FFmpeg libraries and the SDL library. It is mostly used as a testbed for the various FFmpeg APIs. Options All the numerical options, if not specified otherwise, accept a string representing a number as…
NAME ffmvforce – force orientation test for force-feedback devices SYNOPSIS ffmvforce <device> [-u <update rate>] DESCRIPTION ffmvforce generates a force in a given direction, indicated by the position of the mouse pointer in relation to the center of the tool’s window. Beware, the stress test may damage your device! OPTIONS <device> The device to test….
NAME ffmpegthumbnailer – fast and lightweight video thumbnailer SYNOPSIS ffmpegthumbnailer [options] DESCRIPTION Ffmpegthumbnailer is a lightweight video thumbnailer that can be used by file managers to create thumbnails for your video files. The thumbnailer uses ffmpeg to decode frames from the video files, so supported videoformats depend on the configuration flags of ffmpeg. OPTIONS -i<s>…
NAME ffmpeg2theora – command-line converter to create Ogg Theora and Ogg Vorbis files. SYNOPSIS ffmpeg2theora [options] inputfile DESCRIPTION This manual page documents briefly the ffmpeg2theora command. ffmpeg2theora is a program that converts any media file that ffmpeg can decode to Ogg Theora for video and Ogg Vorbis for audio. OPTIONS To read from standard input,…
NAME ffmpeg – ffmpeg video converter SYNOPSIS ffmpeg [global_options] {[input_file_options] -i input_url} … {[output_file_options] output_url} … DESCRIPTION ffmpeg is a very fast video and audio converter that can also grab from a live audio/video source. It can also convert between arbitrary sample rates and resize video on the fly with a high quality polyphase filter….
NAME ffmpeg-utils – FFmpeg utilities DESCRIPTION This document describes some generic features and utilities provided by the libavutil library. SYNTAX This section documents the syntax and formats employed by the FFmpeg libraries and tools. Quoting and escaping FFmpeg adopts the following quoting and escaping mechanism, unless explicitly specified. The following rules are applied: • ‘…
NAME ffmpeg-scaler – FFmpeg video scaling and pixel format converter DESCRIPTION The FFmpeg rescaler provides a high-level interface to the libswscale library image conversion utilities. In particular it allows one to perform image rescaling and pixel format conversion. SCALER OPTIONS The video scaler supports the following named options. Options may be set by specifying –option…
NAME ffmpeg-resampler – FFmpeg Resampler DESCRIPTION The FFmpeg resampler provides a high-level interface to the libswresample library audio resampling utilities. In particular it allows one to perform audio resampling, audio channel layout rematrixing, and convert audio format and packing layout. RESAMPLER OPTIONS The audio resampler supports the following named options. Options may be set by…
NAME ffmpeg-protocols – FFmpeg protocols DESCRIPTION This document describes the input and output protocols provided by the libavformat library. PROTOCOL OPTIONS The libavformat library provides some generic global options, which can be set on all the protocols. In addition each protocol may support so-called private options, which are specific for that component. Options may be…