Sub Rosa is a multiplayer FPS about tense deals, doublecrosses and car chases. Originally made for the 7 Day FPS game jam. Inspirations Sub Rosa was inspired by. How to Install FFMPEG on Cent. OS 7. FFMPEG is a major multimedia framework, able to decode, encode, transcode, mux, demux, stream, filter and play various audio and video files in different formats. Mediaplayers that support Icecast streams. These media players are known to work with Icecast. FFMPEG is a very fast video and audio converter that can also grab from a live audiovideo source. It can also convert between arbitrary sample rates and re size video on the fly with a high quality polyphase filter. It is supported by various library files like libavcodec, libavutil, libavformat, libavfilter, libavdevice, libswscale and libswresample. In short, it is a free software available with libraries and programs to handle multimedia data. It can also be used as a commandline tool in PHP and other programming languages for transcoding multimedia files. Installation Steps for FFMPEGWe need to install a suitable repofile which includes this FFMPEG package which is the most important step of this installation. Speex Download For Linux' title='Speex Download For Linux' />Mp3tag v2. This version is a hotfix release and fixes an issue with HTTPHTTPS access for Windows XP and Wine macOSLinux based systems. TeamSpeak Linux, Windows, macOS, FreeBSD, Android, iOS Proprietary Free Unknown CELT, Speex, Opus Yes 32 unlicensed, 512 with nonprofit license, 2000. Ive tried various repos like RPMforge, EPEL and Webtatic repos in Cent. OS 7, but these repos lacked FFMPEG packages. Hence, I tried a new repo which is called Nux Dextop. Lets walk through the installation steps. Enable Nux Dextop repo on Cent. OS 7. It is a third party RPM repository that contains many popular multimedia related packages for Cent. OS releases. This repo work only if EPEL repo is enabled in the server. So you need to first make sure that youve enabled EPEL repo. This is how we install EPEL repo on a Cent. OS 7 server. Install EPEL repoyum y install epel release. After enabling epel repo, go ahead and install Nux Dextop repository. Domestic Solid Fuel Burning Appliances Installation. RPM GPG KEY nux. Uvh http li. Retrieving http li. Preparing. 1. Updating installing. IMPORTANT Nux Dextop repository is an architecture independent RPM, so you can install the same RPM on both 3. We can now verify that the Nux Dextop repository is installed successfully. Install FFMPEG and FFMPEG devel packages. By installing these packages, all the libraries will be installed in parallel. Package Arch Version Repository SizeInstalling ffmpeg x. Mffmpeg devel x. Installing for dependencies SDL x. Mflac libs x. 866. Xi x. 866. 4 1. 7. Xtst x. 866. 4 1. Xv x. 866. 4 1. 0. Transaction SummaryInstall 2 Packages 3. Dependent packages3. Check and confirm FFMPEG version. You can use this command for checking the version of ffmpeg installed and to confirm the configuration set up. Copyright c 2. 00. FFmpeg developersbuilt with gcc 4. GCC 2. 01. 40. 91. Red Hat 4. 8. 3 9configuration prefixusr bindirusrbin datadirusrshareffmpeg incdirusrincludeffmpeg libdirusrlib. O2 g pipe Wall Wp, DFORTIFYSOURCE2 fexceptions fstack protector strong paramssp buffer size4 grecord gcc switches m. Hyper fast Audio and Video encoderusage ffmpeg options infile options i infile. Use h to get full help or, even better, run man ffmpegNow we have completed with the installation of ffmpeg. You see how simple to install it when we move on the right track. I will give you an example for converting a mp. CLI. Download an mp. Resolving ia. 80. Connecting to ia. HTTP request sent, awaiting response. OKLength 1. 98. 65. KSaving to mpthreetest. KBs in 0. 2s. 20. KBs mpthreetest. Copyright c 2. FFmpeg developersbuilt with gcc 4. GCC 2. 01. 40. 91. Red Hat 4. 8. 3 9configuration prefixusr bindirusrbin datadirusrshareffmpeg incdirusrincludeffmpeg libdirusrlib. O2 g pipe Wall Wp, DFORTIFYSOURCE2 fexceptions fstack protector strong paramssp buffer size4 grecord gcc switches m. Estimating duration from bitrate, this may be inaccurate. Input 0, mp. 3, from mpthreetest. Metadata title Test of MP3 Fileartist Mealbum Medate 2. Other. Duration 0. Stream 0 0 Audio mp. Hz, mono, s. 16p, 1. Output 0, ogg, to mpthreetest. Metadata title Test of MP3 Fileartist Mealbum Medate 2. Otherencoder Lavf. Stream 0 0 Audio vorbis libvorbis, 4. Hz, mono, fltp. Metadata encoder Lavc. Test of MP3 Fileartist Mealbum Medate 2. DESCRIPTION test. TRACKNUMBER 1genre Other. Stream mapping Stream 0 0 0 0 mp. Press q to stop, for helpsize 1. B time0. 0 0. 0 1. B audio 1. 00k. B subtitle 0k. B other streams 0k. B global headers 3k. B muxing overhead 4. Now our MP3 test file is converted to Vorbis ogg audio compression format which is much better compared to mp. Similarly, we can encode, decode and convert any video, images or audio file formats using this commandline tool. We can even make use this module in PHP by proper coding. You can get more information on using this tool by referring to the manual page which you can get by running the command man ffmpeg. I hope you enjoyed reading this documentation on FFMPEG. I would recommend your valuable suggestions and comments on this Have a Nice Day. Linphone VOIP softphone open source video sip phone, voip software. Linphone command line tools. Linphonec. Linphonec is a terminal based version of linphone that reads commands from the user prompt. Example Start linphonec in a terminal linphonec. Ready. Warning video is disabled in linphonec, use V or C or D to enable. Place an outgoing calllinphonec call sip 5. Alternatively, if someproxy. Terminate a calllinphonec terminate. At any time you can list available commands using help linphonec help. Commands are help Print commands helpcall Call a SIP urichat Chat with a SIP uriterminate Terminate the current callanswer Answer a callautoanswer Showset auto answer modeproxy Manage proxiessoundcard Manage soundcardswebcam Manage webcamsstaticpic Manage static pictures when nowebcamipv. Use IPV6refer Refer the current call to the specified destination. Set nat addressstun Set stun server addressfirewall Set firewall policycall logs Calls historyfriend Manage friendsplay play from a wav filerecord record to a wav filequit Exit linphonecregister Register in one line to a proxyunregister Unregister from default proxyduration Print duration in seconds of the last call. Print various status informationports Network ports configurationspeak Speak a sentence using espeak TTS enginecodec Audio codec configurationvcodec Video codec configurationec Echo cancellationmute Mute microphone and suspend voice transmission. Unmute microphone and resume voice transmission. Set the rtpnoxmitonaudiomute configuration parameter. Type help lt ltcommand for more details. Serial Number For Solidworks 2008. Linphonecsh control a linphonec daemon. Linphonecsh is a console utility to send non blocking commands to an instance of linphonec runnning in the background. Here is an example to run within your favourite shell and terminal spawn a linphonec daemon linphonecsh initregister to a proxy linphonecsh register host myproxy. This feature is still being developed, stay connected to svn if you use it What could be the applications of this tool For example run Vo. IP calls from scriptsfrom web cgi pagesfrom javascript in a browser window. Configuration file documentation. Linphone has a linphonerc configuration file in which all SIP, RTP, sound, video settings are read and stored. By default no configuration file is required and linphone always generates a default one at first startup. Most of the parameters are used internally by accessors of liblinphone ex linphonecoresetgetaudioport and thus do not need to be accessed directly by editing the config file. However some parameters are related to fine grained settings noise gate, echo canceler parameters, echo limiter etc. Follows here a description of sound related tunables and a documented linphonerc config file with all settings. Echo canceller. Linphone uses an echo canceller from libspeexdsp. Filter tail length, echo delay and frame size can be changed. Expected delay of echo in millisecondsUse this when you have a fixed latency in the sound hardware. This allows to reduce the tail length of the echo canceller, which speeds up convergenceand reduces complexity of computations. Tail length of echo canceller in milliseconds. Ideally it should be no more than the expected duration of the echo. Frame size for AU MDF echo canceller algorithmThis is a parameter internal to the echo canceller, recommended is too keep to its default value. Echo limiter. The echo limiter is an algorithm that consists in lowering the gain of the mic input when the speaker is talking. Combined with the noise gate see next section it gives good results when the echo canceller no more works, because of non linear distorsion saturation of the echo path. Its drawback is that it turns the call in a kind of automatic half duplex mode, which makes impossible to interrupt the person who is talking. Enables echo limiterthis basically consists in lowering the mic input in softwarewhen the speaker level is above a certain thresholdthe attenuation is made proportionnal to the speaker detected levelecholimiter0elspeed parameter gain changes are smoothed with a coefficentelspeed is this coefficient. Its a value between 0 and 10. Threshold above which the system becomes active. It is a normalized power, between 0 and 1. Default value is 0. A smaller value can be better. The proportional coefficient controlling the mic attenuation. Default value is 1. Time in milliseconds for which the attenuation is kept unchanged after resuming from speech to silence on the network speaker channel. This is a very important parameter that needs to be adjustedto take in account the latency of the sound carddriver. Indeed when the echo limiter sees there is no more energy going to the speaker, there can be still some audio buffers pending to be playedin the audio driver. These buffers are out of control of the applicationand will generate echo as they are non silence. The purpose of the parameter is to keep the mic attenuatedfor some time until the echo of these buffer is finished. Noise gate. The goal of the noise gate is to remove or attenuate a lot the background noise heared by the microphone. Noise and speech are distinguished using an energy threshold. The use of the noise gate can prevent feedback to produce between two devices running linphone. The noise gate is located just after mic inputTells whether noise gate is active noisegate0Noise gate threshold in linear power between 0 and 1 Above this threshold the noise gate becomes bypass. Noise gates floorgain gain applied to the signal when its energy is below the threshold. It is expect to be low so that noise is attenuated. Equalizer. A parametric equalizer can be used to recover from speakers with bad spectral response. The frequency response of the equalizer is entirely configurable. Tells whether equalizer is active. It is a list of triplets for example eqgains3. Miscellaneous audio parameterssoundAutomatic gain control of mic input turns on or off agc0static software gain linear scale to be applied to microphone signalmicgain1. Enable or disable DC removal of mic input dcremoval0. Linphonerc sample file documentedsection relative to sound settingssoundsound device name used for playback, as listed in linphonec by soundcard listplaybackdevidALSA default devicesound device name used for ringing, as listed in linphonec by soundcard listringerdevidALSA default devicesound device name used for capture, as listed in linphonec by soundcard listcapturedevidALSA default deviceAlsa special device name This option allows to specify a special ALSA card as defined in ALSA asoundrc config files to be used by linphone. This card can then be referred by playbackdevid, ringerdevid, capturedevid options. Use this if you are able to understand asoundrc syntax and you know what you are doing. Expected delay of echo in millisecondsUse this when you have a fixed latency in the sound hardware. This allows to reduce the tail length of the echo canceller, which speeds up convergenceand reduces complexity of computations. Tail length of echo canceller in milliseconds. Ideally it should be no more than the expected duration of the echo.