quidam34's Library tagged codec →  View Popular

a small but not full-featured decoder will be written (in Haskell), suited to play around with.

Because MCS targets image/video processing, I chose to implement three types of background subtraction—a common first step in many video processing applications. The algorithms were implemented from scratch in MATLAB, then converted to C using MCS. The C code was then verified in MATLAB using mex files. (All m-files, generated C files, and the test video clip used—can be downloaded here).

In Part 1 of this 2-part series, I'll give a brief overview of background subtraction and go into detail on the three methods I chose to implement: frame differencing, approximate median, and mixture of Gaussians. Part 2 illustrates the MATLAB to C conversion process and offers impressions of the tool.

SUPER (Simplified Universal Player Encoder & Renderer) is a tool for converting one multimedia format to another. It currently supports 3GP/3G2, ASF, AVI, FLI, FLC, FLV, MPG, MOV, MP4, OGG, QT, RM, STR, SWF, VIV, VOB, WMV, AC3, AMR, MP2, MP3, MP4, OGG, RA, WMA.

MPlayer and MPUI, when teamed up, offer the following features:

* A media player with a clean and simple interface.
* Plays hundreds of different video and audio formats, including MPEG-1, -2 and -4 (DivX), H.264, MP3, Ogg Vorbis and AAC. For most media files, no additional codecs are needed. (This is because MPlayer is not one of the uncounted DirectShow players – the codecs are directly integrated into MPlayer.exe.)
* MPUI and MPlayer together are just about 3.5 MB in size.
* The most important MPlayer options (aspect ratio, deinterlacing, and postprocessing) can be configured without typing in cryptic command-line options. (But if you want or need some non-standard options, you can still add them by hand.)
* Support for multiple audio and subtitle tracks on DVDs.
* Combines MPlayer's cool keyboard navigation with a mouse-controlled seekbar.
* Plays files, network streams and discs (such as (S)VCD or DVD). Drag&Drop supported.
* Multilingual user interface.
* No installation is required to use MPUI/MPlayer. Simply copy the two .exe files into a directory of your choice an run MPUI.
* Using a special autorun.inf file, self-playing DivX CDs can be made. This adds only 3.5 MB to your CD, and on the computer playing the disc, no codecs need to be installed.