Now let us go into some details of the code.
Copy pixel data from an AVPicture into a buffer, always assume a linesize alignment of 1.Īvpicture_layout((AVPicture *)picture, c->pix_fmt, c->width, c->height, Buf1, c->width*c->height*1.5) įwrite(Buf1, c->width*c->height*1.5, 1, outf) Static int FindStartCode (unsigned char *Buf, int zeros_in_startcode)įor (i = 0 i 0 & picture->linesize !=0) #pragma comment(lib, "dev\\lib\\avcodec.lib") #include "dev\include\libavcodec\avcodec.h" Libav () provides cross-platform tools and libraries to convert, manipulate and stream a wide range of multimedia formats and protocols. Libswresample provides an audio resampling, rematrixing and sample format conversion API, and many high-quality optimized routines. Libpostproc provides video postprocessing routines
Libavfilter provides an audio and video filtering API, and all the supported filters. Libswscale provides a scaling and (raw pixel) format conversions API, with high speed/assembly optimized versions of several scaling routines. webcames or line-in audio) and rendering to output devices, and all the supported input and output devices Libavdevice provides an interface for grabbing from input devices (e.g. Libavformat provides a demuxing and muxing API, and all the supported muxers and de-muxers. Libavcodec provides a decoding and encoding API, and all the supported codecs. Libavutil contains various routines used to simplify programming, including random number generators, data structures, mathematics routines, core multimedia utilities, and much more. Beforehand, some definitions…įFmpeg is a complete, cross-platform solution to record, convert and stream audio and video.įFmpeg itself is composed of several libraries (the some of which is Libav) that can be used individually, and outside of FFmpeg, for instance in integrating parts of FFmpeg into your own program. The Microsoft Visual studio 10 project and source code can be found here. This can be used as part of video player or streaming clients or just to decode H.264 video. Here I show how to use FFmpeg’s Libav programmatically to decode (or decompress) a video and extract a raw uncompressed stream.
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