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{{From|https://help.ubuntu.com/community/MEncoder}} {{Languages|php5}} attachment:IconsPage/mplayer.png == What is MEncoder? == '''Mencoder''' is a companion program to the [[UbuntuHelp:MPlayer| MPlayer media player]] that can be used to encode or transform any audio or video stream that MPlayer can read. See the RestrictedFormats wiki page for instructions for enabling non-free formats in MPlayer and gmplayer. For more information visit the [http://www.mplayerhq.hu/homepage/design7/news.html MPlayer] web site. Filters include cropping, scaling, vertical flipping, horizontal mirroring, expanding to create letterboxes, rotating, brightness/contrast, changing the aspect ratio of the video's pixels, colorspace conversion, hue/saturation, color-specific gamma correction, filters for reducing the visibiltiy of compression artifacts caused by MPEG compression (deblocking, deringing), automatic brightness/contrast enhancement (autolevel), sharpness/blur, denoising filters, and several different ways of deinterlacing. Certain filters capable of reversing telecine that do not work well with MPlayer can be used as well. == How To Use MEncoder == === Install === First, ensure that the mencoder package is installed with all appropriate dependencies with <pre><nowiki> sudo apt-get install mencoder </nowiki></code> You may also consider finding and install the w32codecs package, if you will be working with proprietary formats, such as wmv. === Basic Usage === To use mencoder, you must specify at least an input file, an output file, an audio encoder and a video encoder. As a general framework, you can use the following to convert a video from any type that mplayer can read, to an avi file using mp3 audio encoding. <pre><nowiki> mencoder <input_movie> -oac mp3lame -ovc lavc -o output_movie.avi </nowiki></code> === Audio/Video encoders === To see a list of audio encoders supported on your installation, run <pre><nowiki> mencoder -oac help </nowiki></code> To use an audio encoder, specify it as in the example above with -oac <audio_encoder>. Similarly for video encoders, search with <pre><nowiki> mencoder -ovc help </nowiki></code> <br> === See also === * The [[UbuntuHelp:MPlayer| MPlayer wiki page]] * [http://www.mplayerhq.hu/DOCS/HTML/en/encoding-guide.html Guide to Encoding with MEncoder] * [http://videotranscoding.wikispaces.com/?token=23a6250c99d7f8cc9bbbbd70ce80c39f Video Transcoding Wiki] * [http://gentoo-wiki.com/HOWTO_Mencoder_Introduction_Guide MEncoder Guide on the Gentoo Wiki] <br> ---- CategoryDocumentation CategoryNeedsExpansion [[category:UbuntuHelp]]
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