Filters include cropping, scaling, vertical flipping, horizontal mirroring, expanding to create letterboxes, rotating, brightness/ contrast, changing the aspect ratio, colorspace conversion, hue/ saturation, color-specific gamma correction, filters for reducing the visibility of compression artifacts caused by MPEG compression (deblocking, deringing), automatic brightness/contrast enhancement (autolevel), sharpness/ blur, denoising filters, several ways of deinterlacing, and reversing telecine.įrame rate conversions and slow-motion Ĭhanging the frame rate is possible using the -ofps or -speed options and by using the framestep filter for skipping frames.
#MPLAYER COMMAND LINE OPTIONS CODE#
Since it uses the same code as MPlayer, it features the same huge number of highly-configurable video and audio filters to transform the video and audio stream. For example, to modify only the audio or only the video, or to put the audio/video data unmodified into a different container format. It is possible to copy audio and/or video unmodified into the output file to avoid quality loss because of re-encoding. If the system is not able to process this in realtime, audio can be disabled using -nosound to allow a smooth review of the video filtering results. MPlayer can be used to view the output of most of the filters (or of a whole pipeline of filters) before running MEncoder. Moreover, MEncoder can read a sequence of image files and convert it to a video file with a specified framerate. 1.1 Frame rate conversions and slow-motionĪs it is built from the same code as MPlayer, it can read from every source which MPlayer can read, decode all media which MPlayer can decode and it supports all filters which MPlayer can use.
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