Conversion code of AVI and BMP in VC

Post a code memo about mutual conversion between Avi and BMP

Code can be found on the Internet. I can run it on the console.

Pay attention to the order of header files, and it is easy to report errors.

This code is used to disassemble an AVI video into a BMP frame. It is applicable to 24-Bit Bitmap, 8-bit, or other bmp formats that are useful for color palette. You need to make some minor modifications.

# Pragma comment (Lib, "vfw32") # include <atlstr. h> # include <VFW. h> # include <string> # include <stdio. h> int main () {STD: String S1 = "C :\\ Users \ Asus \ Desktop \ task \ XXX. avi "; STD: String S2 =" C :\\ Users \ Asus \ Desktop \ task \ picture "; cstring stravifilename; cstring strbmp dir; stravifilename. format ("% s", s1.data (); strbmp dir. format ("% s", s2.data (); avifileinit (); pavifile Avi; int res = avifileopen (& Avi, S Travifilename, of_read, null); int n = getlasterror (); If (res! = Avierr_ OK) {// an error occures if (Avi! = NULL) iterate (AVI); Return 0;} avifileinfo avi_info; avifileinfo (AVI, & avi_info, sizeof (avifileinfo); pavistream pstream; Res = avifilegetstream (AVI, & pstream, streamtypevideo/* video stream */, 0/* first stream */); If (res! = Avierr_ OK) {If (pstream! = NULL) avistreamrelease (pstream); avifileexit (); Return 0;} // do some tasks with the stream int inumframes; int ifirstframe; ifirstframe = avistreamstart (pstream ); if (ifirstframe =-1) {// error getteing the frame inside the stream if (pstream! = NULL) avistreamrelease (pstream); avifileexit (); Return 0;} inumframes = avistreamlength (pstream); If (inumframes =-1) {// error getteing the number of frames inside the stream if (pstream! = NULL) avistreamrelease (pstream); avifileexit (); Return 0;} // getting bitmap from frame bitmapinfoheader BiH; zeromemory (& BiH, sizeof (bitmapinfoheader); BiH. bibitcount = 8; // 24 bit per pixel BiH. biclrimportant = 0; BiH. biclrused = 256; BiH. bicompression = bi_rgb; BiH. biplanes = 1; BiH. bisize = 40; // BiH. bisize = sizeof (BiH); // BiH. bixpelspermeter = 0; BiH. biypelspermeter = 0; // Calculate total size Rgbquad scanlines (DWORD aligned) BiH. bisizeimage = (BIH. biwidth * 3) + 3) & 0 xfffc) * BiH. biheight; // -- // BiH. bisizeimage = (BIH. biwidth * BiH. bibitcount + 31)/32*4 * BiH. biheight * 3; // ---- pgetframe pframe; pframe = avistreamgetframeopen (pstream, null); avistreaminfo streaminfo; avistreaminfo (pstream, & streaminfo, sizeof (avistreaminfo )); // get the first frame bitmapinfoheader bih2; long lsize = sizeof (Bih2); int Index = 0; // avistreamreadformat (pstream, index, & bih2, & lsize); For (INT I = ifirstframe; I <inumframes; I ++) {Index = I-ifirstframe; byte * pdib = (byte *) avistreamgetframe (pframe, index); // avistreamreadformat (pstream, index, & bih2, & lsize); bitmapfileheader stfilehdr; rgbtriple STP; int H = bih2.biheight; int W = bih2.biwidth; int BC = bih2.bibitcount; int CM = bih2.biclrimportant; int BCU = Bih2.biclrused; int COM = bih2.bicompression; int PL = bih2.biplanes; int S = bih2.bisize; int Si = bih2.bisizeimage; int x = bytes; int y = bytes; // printf ("h: % d w: % d bitcount: % d clri: % d clru: % d COMP: % d planes: % d size: % d sizeimage: % d xppm: % d yppm: % d \ n ", H, W, BC, CM, BCU, COM, PL, S, Si, x, y); byte * bits = new byte [bih2.bisizeimage]; avistreamread (pstream, index, 1, bits, bih2.bisiz Eimage, null, null); // rtlmovememory (bits, pdib + sizeof (bitmapinfoheader), bih2.bisizeimage); // --- original annotation bih2.biclrused = 256; stfilehdr. bfoffbits = sizeof (bitmapfileheader) + sizeof (bitmapinfoheader); stfilehdr. bfsize = sizeof (bitmapfileheader); stfilehdr. bftype = 0x4d42; cstring filename; filename. format ("frame-000005dof0000d.bmp", index, inumframes); cstring strtemp = strbmp dir; strtemp ++ = "//"; strtemp + = filena Me; file * fp = _ tfopen (strtemp, _ T ("WB"); fwrite (& stfilehdr, 1, sizeof (bitmapfileheader), FP); fwrite (& bih2, 1, sizeof (bitmapinfoheader), FP); // fwrite (& STP, FP); // Note: Each color palette 4B, 8-bit images have 256 // -- int FF = fwrite (bits, 1, bih2.bisizeimage, FP); int e = getlasterror (); fclose (FP ); //// delete bits; // createfrompackeddibpointer (pdib, index);} avistreamgetframeclose (pframe); // close the stream after finishi Ng the task if (pstream! = NULL) avistreamrelease (pstream); avifileexit (); Return 0 ;}

This is an AVI video assembled with BMP. You can set the Frame Rate on your own.

#pragma comment(lib, "vfw32")#include <afx.h>#include <atlstr.h>#include<string>#include<stdio.h>#include<string.h>#include <Vfw.h>void main (){  CString szAVIName;  CString strBmpDir;  szAVIName = "C:\\Users\\asus\\Desktop\\Task\\pic\\tt.avi";  strBmpDir = "C:\\Users\\asus\\Desktop\\Task\\picture";       CFileFind finder;       strBmpDir += _T("\\*.*");        AVIFileInit();          AVISTREAMINFO strhdr;       PAVIFILE pfile;       PAVISTREAM ps;        int nFrames =0;        HRESULT hr;         BOOL bFind = finder.FindFile(strBmpDir);       while(bFind)       {              bFind = finder.FindNextFile();              if(!finder.IsDots() && !finder.IsDirectory())              {                     CString str = finder.GetFilePath();                     FILE *fp = fopen(str,"rb");                     BITMAPFILEHEADER bmpFileHdr;                     BITMAPINFOHEADER bmpInfoHdr;                     fseek( fp,0,SEEK_SET);                     fread(&bmpFileHdr,sizeof(BITMAPFILEHEADER),1, fp);                     fread(&bmpInfoHdr,sizeof(BITMAPINFOHEADER),1, fp);                      BYTE *tmp_buf = NULL;                     if(nFrames ==0 )                     {                           AVIFileOpen(&pfile,szAVIName,OF_WRITE | OF_CREATE,NULL);                            memset(&strhdr, 0, sizeof(strhdr));                            strhdr.fccType                = streamtypeVIDEO;// stream type                            strhdr.fccHandler             = 0;                            strhdr.dwScale                = 1;                            strhdr.dwRate                 = 15;                 // 15 fps                            strhdr.dwSuggestedBufferSize = bmpInfoHdr.biSizeImage ;                            SetRect(&strhdr.rcFrame, 0, 0, bmpInfoHdr.biWidth, bmpInfoHdr.biHeight);                             // And create the stream;                            hr = AVIFileCreateStream(pfile,&ps,&strhdr);                        // hr = AVIStreamSetFormat(ps,nFrames,&bmpInfoHdr,sizeof(bmpInfoHdr));                    }                     tmp_buf = new BYTE[bmpInfoHdr.biWidth * bmpInfoHdr.biHeight * 3];                   fread(tmp_buf, 1, bmpInfoHdr.biWidth * bmpInfoHdr.biHeight * 3, fp);                     hr = AVIStreamSetFormat(ps,nFrames,&bmpInfoHdr,sizeof(bmpInfoHdr));                     hr = AVIStreamWrite(ps,       // stream pointer                              nFrames ,                          // time of this frame                                   1,                         // number to write                                   (LPBYTE) tmp_buf,                                   bmpInfoHdr.biSizeImage , // size of this frame                                   AVIIF_KEYFRAME,                    // flags....                                   NULL,                                   NULL);                      nFrames ++;                      fclose(fp);               }       }        AVIStreamClose(ps);       if(pfile != NULL)      AVIFileRelease(pfile);         AVIFileExit();}