libmpeg2 Video and TV App


by libmpeg2

MPEG1/MPEG2 video decoder library
Helps with: Video and TV
Similar to: WebM App SentiGaze App CubiSDK App libmms App More...
Source Type: Open
License Types:
Supported OS:
Languages: C CPP

What is it all about?

libmpeg2 is a free library for decoding mpeg-2 and mpeg-1 video streams. It is released under the terms of the GPL license.

Key Features

• Conformance - libmpeg2 is able to decode all mpeg streams that conform to certain restrictions: "constrained parameters" for mpeg-1, and "main profile" for mpeg-2. In practice, this is what most people are using. • Speed - there has been huge efforts there, and we believe libmpeg2 is the fastest library around for what it does. With typical video streams as found on DVD's, and doing only decoding with no display, you should be able to get about 110 fps on a PIII/666, or 150 fps on an Athlon/950. This is less than 20 cycles per output pixel. In a real player program, the display routines will probably take as much time as the actual decoding! • Portability - most of the code is written in C, and when we use platform-specific optimizations (typically assembly routines, currently used for the motion compensation and the inverse cosine transform stages) we always have a generic C routine to fall back on. This should be portable to all architectures - at least we have heard reports from people running this code on x86, ppc, sparc, arm and sh4. Assembly-optimized implementations are available on x86 (MMX) and ppc (AltiVec) architectures. • Reuseability - libmpeg2 do not include any project-specific code, but it should still include enough features to be used by very diverse projects.


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